Log in

Relevant bibliographies by topics / Bc meson / Journal articles

Journal articles on the topic 'Bc meson'

To see the other types of publications on this topic, follow the link: Bc meson.

Author: Grafiati

Published: 9 March 2023

Last updated: 10 March 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Bc meson.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Chen, Yu-Qi. "Production of the Bc Meson." International Journal of Modern Physics A 12, no. 22 (September 10, 1997): 4039–48. http://dx.doi.org/10.1142/s0217751x9700219x.

Full text

Abstract:

The production of the Bc and [Formula: see text] mesons was studied in the framework of the factorization formalism and perturbative QCD. Predicted results implied that an observable number of Bc and [Formula: see text] events can be produced at LEP I and at Tevatron. The fragmentation approximation describes the production of the Bc and [Formula: see text] mesons very well in high energy e+ e- collisions. In hadronic collisions, it is valid when and only when the transverse momentum PT of the produced Bc and [Formula: see text] is much larger than the mass of the Bc meson.

APA, Harvard, Vancouver, ISO, and other styles

2

Falmagne, Guillaume. "First measurement of the B_c⁺ meson nuclear modification factor in PbPb collisions with CMS." EPJ Web of Conferences 259 (2022): 12011. http://dx.doi.org/10.1051/epjconf/202225912011.

Full text

Abstract:

The Bc+ meson is observed in lead-lead and proton-proton collisions at a center-of-mass energy per nucleon pair of √SNN = 5.02 TeV, via the Bc+ → (J/ψ → μ+μ−)μ+vμ decay and using 2017 and 2018 data from the CMS detector. The resulting Bc+ nuclear modification factor is measured in two bins of the trimuon transverse momentum and of the collision centrality. Less suppression is observed than for other quarkonia and most open heavy flavour mesons. This first observation of the Bc+ meson in heavy ion collisions will shed light on the interplay of suppression and enhancement mechanisms in the production of heavy-flavor mesons in the quark-gluon plasma.

APA, Harvard, Vancouver, ISO, and other styles

3

Veliev, E. Veli, K. Azizi, H. Sundu, and N. Akşit. "Bc Meson at Finite Temperature." Nuclear Physics B - Proceedings Supplements 219-220 (October 2011): 170–73. http://dx.doi.org/10.1016/j.nuclphysbps.2011.10.091.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Abreu, P., W. Adam, T. Adye, I. Ajinenko, G. D. Alekseev, R. Alemany, P. P. Allport, et al. "Search for the Bc meson." Physics Letters B 398, no. 1-2 (April 1997): 207–22. http://dx.doi.org/10.1016/s0370-2693(97)00254-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Itoh, C., T. Minamikawa, K. Miura, and T. Watanabe. "Bs and Bc meson masses." Il Nuovo Cimento A 105, no. 10 (October 1992): 1539–48. http://dx.doi.org/10.1007/bf02731983.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Chang, Chao-Hsi, Jian-Ping Cheng, and Cai-Dian Lü. "Radiative leptonic decays of Bc meson." Physics Letters B 425, no. 1-2 (April 1998): 166–70. http://dx.doi.org/10.1016/s0370-2693(98)00177-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Jamshidi, S., R. Sepahvand, and S. Dadfar. "Production of Bc Meson at NLO." International Journal of Theoretical Physics 59, no. 8 (July 13, 2020): 2255–70. http://dx.doi.org/10.1007/s10773-020-04457-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Chang (Zhao-Xi Zhang), Chao-Hsi. "Production and decay of the meson Bc." International Journal of Modern Physics A 21, no. 04 (February 10, 2006): 777–84. http://dx.doi.org/10.1142/s0217751x06032022.

Full text

Abstract:

Studies on the decay and production of [Formula: see text] meson are briefly reviewed. Considering RUN-II of Tevatron and the schedule of LHC, the theoretical studies of Bc meson will jump to a new stage not only for itself but also to implement the studies of the heavy quarkonia etc.

APA, Harvard, Vancouver, ISO, and other styles

9

Berezhnoy, A. V., and I. N. Belov. "D-wave Bc meson production at LHC." Journal of Physics: Conference Series 1690 (December 2020): 012089. http://dx.doi.org/10.1088/1742-6596/1690/1/012089.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Cheung, Kingman. "Bc meson production at the Tevatron revisited." Physics Letters B 472, no. 3-4 (January 2000): 408–11. http://dx.doi.org/10.1016/s0370-2693(99)01402-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Chang, Chao-Hsi, Yu-Qi Chen, Guo-Ping Han, and Hong-Tao Jiang. "On hadronic production of the Bc meson." Physics Letters B 364, no. 2 (December 1995): 78–86. http://dx.doi.org/10.1016/0370-2693(95)01235-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Cheung, Kingman, and Tzu Chiang Yuan. "Bc meson productions via induced gluon fragmentation." Physics Letters B 325, no. 3-4 (April 1994): 481–87. http://dx.doi.org/10.1016/0370-2693(94)90043-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Sun, Junfeng, Yueling Yang, Qin Chang, Gongru Lu, and Jinshu Huang. "Υ(nS)→Bc⁎π,Bc⁎KDecays with Perturbative QCD Approach." Advances in High Energy Physics 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/4893649.

Full text

Abstract:

Besides the traditional strong and electromagnetic decay modes,Υ(nS)meson can also decay through the weak interactions within the standard model of elementary particle. With anticipation of copiousΥ(nS)data samples at the running LHC and coming SuperKEKB experiments, the two-body nonleptonic bottom-changingΥ(nS)→Bc⁎π,Bc⁎Kdecays (n=1,2,3) are investigated with perturbative QCD approach firstly. The absolute branching ratios forΥ(nS)→Bc⁎πandBc⁎Kdecays are estimated to reach up to about10-10and10-11, respectively, which might possibly be measured by the future experiments.

APA, Harvard, Vancouver, ISO, and other styles

14

NOBARY, M. A. GOMSHI, and T. O'SATI. "FRAGMENTATION FUNCTIONS FOR Bc AND $B^*_c$ MESONS WITH DEFINITE POLARIZATION." Modern Physics Letters A 15, no. 07 (March 7, 2000): 455–64. http://dx.doi.org/10.1142/s021773230000044x.

Full text

Abstract:

We present exact fragmentation functions for the production of S-wave Bc and [Formula: see text] mesons splitting out of a [Formula: see text]-antiquark. We distinguish transverse and longitudinal polarizations of [Formula: see text] which is important in hadronic spin properties of such states. Input parameters for our functions are quark masses, meson decay constants, and the transverse momentum for the hard production mechanism. Evolution of such functions from fragmentation scale up to an appropriate factorization scale are given. We compare our results with similar ones in the literature.

APA, Harvard, Vancouver, ISO, and other styles

15

HUANG, TAO, ZUO-HONG LI, XING-GANG WU, and FEN ZUO. "SEMILEPTONIC B(Bs, Bc) DECAYS IN THE LIGHT-CONE QCD SUM RULES." International Journal of Modern Physics A 23, no. 21 (August 20, 2008): 3237–45. http://dx.doi.org/10.1142/s0217751x0804189x.

Full text

Abstract:

Semileptonic B(Bs, Bc) decays are investigated systematically in the light-cone QCD sum rules. Special emphasis is put on the LCSR calculation on weak form factors with an adequate chiral current correlator, which turns out to be particularly effective to control the pollution by higher twist components of spectator mesons. The result for each channel depends on the distribution amplitude of the the producing meson. The leading twist distribution amplitudes of the related heavy mesons and charmonium are worked out by a model approach in the reasonable way. A practical scenario is suggested to understand the behavior of weak form factors in the whole kinematically accessible ranges. The decay widths and branching ratios are estimated for several B(Bc) decay modes of current interest.

APA, Harvard, Vancouver, ISO, and other styles

16

PATHAK, KRISHNA KINGKAR, and D. K. CHOUDHURY. "SEMILEPTONIC DECAY OF Bc MESON INTO $c\bar c$ STATES IN A QCD POTENTIAL MODEL." International Journal of Modern Physics A 28, no. 19 (July 30, 2013): 1350097. http://dx.doi.org/10.1142/s0217751x13500978.

Full text

Abstract:

The slope and curvature of Isgur–Wise function for Bc meson is computed in a QCD potential model in two different approaches of choosing the perturbative term of the Cornell potential. Based on heavy quark effective theory the exclusive semileptonic decay rates of Bc meson into the [Formula: see text] states are exploited. Spin symmetry breaking effects are ignored up to a particular point and the form factors are connected with Isgur–Wise function for other kinematic point since the recoil momentum of [Formula: see text] from Bc is small due to its heavy mass.

APA, Harvard, Vancouver, ISO, and other styles

17

CHEU, ELLIOTT. "PROPERTIES OF HEAVY MESON STATES: B** and Bc." International Journal of Modern Physics A 20, no. 16 (June 30, 2005): 3664–68. http://dx.doi.org/10.1142/s0217751x05027242.

Full text

Abstract:

Using data collected with the DØ detector in Run II of the Tevatron, we study decays of the B** and [Formula: see text] meson. For the first time the separation of the specific excited states B1 and [Formula: see text] has been observed. In addition, we use the Bc candidates to measure the mass and the lifetime of the Bc.

APA, Harvard, Vancouver, ISO, and other styles

18

Лазур, В. Ю., В. В. Рубіш, О. К. Рейтій, and С. І. Мигалина. "Description of mass spectrum of Bc-meson family." Scientific Herald of Uzhhorod University.Series Physics 46 (November 26, 2019): 107–17. http://dx.doi.org/10.24144/2415-8038.2019.46.107-117.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Aliev, T. M., and O. Yilmaz. "Properties of Bc-meson in QCD sum rules." Il Nuovo Cimento A 105, no. 6 (June 1992): 827–33. http://dx.doi.org/10.1007/bf02799097.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

BHATTACHARYA, A., B. CHAKRABARTI, T. SARKHEL, and S. N. BANERJEE. "DEPENDENCE OF |Vcb| ON FERMI MOMENTUM." International Journal of Modern Physics A 15, no. 14 (June 10, 2000): 2053–58. http://dx.doi.org/10.1142/s0217751x00000835.

Full text

Abstract:

The Fermi momentum Pf for the Bc meson has been estimated in the framework of the statistical model. The matrix element |Vcb| has been extracted from the lepton energy spectrum using the estimated value of the Fermi momentum, in the framework of the ACCMM model. The value of Pf for Bc meson has been estimated as Pf=1.14 GeV which is somewhat large compared to the existing estimates.

APA, Harvard, Vancouver, ISO, and other styles

21

Goswami, J., D. Chakrabarti, and S. Basak. "Mass spectroscopy using Borici–Creutz fermions on 2D lattice." International Journal of Modern Physics A 32, no. 11 (April 13, 2017): 1750059. http://dx.doi.org/10.1142/s0217751x17500592.

Full text

Abstract:

Minimally doubled fermion proposed by Creutz and Borici is a promising chiral fermion formulation on lattice. In this work, we present excited state mass spectroscopy for the meson bound states in Gross–Neveu model using Borici–Creutz (BC) fermion. We also evaluate the effective fermion mass as a function of coupling constant which shows a chiral phase transition at strong coupling. The lowest lying meson in two-dimensional QED is also obtained using BC fermion.

APA, Harvard, Vancouver, ISO, and other styles

22

CHOUDHURY, DEBAJYOTI, ANIRBAN KUNDU, and BISWARUP MUKHOPADHYAYA. "TESTABLE SIGNALS OF CHARM DECAY IN THE Bc-MESON." Modern Physics Letters A 16, no. 22 (July 20, 2001): 1439–48. http://dx.doi.org/10.1142/s0217732301004650.

Full text

Abstract:

The b and c quarks compete with each other in the decays of the Bc-meson. We show how one can obtain reliable signals of c→s decay in the Bc system in order to calculate the relative strengths of the two types of decays. This, we argue, can be done by considering the decay [Formula: see text], followed by semileptonic decays of the Bs. We suggest looking for like-sign dileptons together with a Ds at the BTeV or LHC-B experiments, and show that such signals can be made background-free by suitable event selection.

APA, Harvard, Vancouver, ISO, and other styles

23

Barate, R., D. Buskulic, D. Decamp, P. Ghez, C. Goy, J. P. Lees, A. Lucotte, et al. "Search for the Bc meson in hadronic Z decays." Physics Letters B 402, no. 1-2 (June 1997): 213–26. http://dx.doi.org/10.1016/s0370-2693(97)00461-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Ackerstaff, K., G. Alexander, J. Allison, N. Altekamp, K. J. Anderson, S. Anderson, S. Arcelli, et al. "Search for the Bc meson in hadronic Z0 decays." Physics Letters B 420, no. 1-2 (February 1998): 157–68. http://dx.doi.org/10.1016/s0370-2693(97)01569-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Masetti, Marco, and Francesca Sartogo. "Perturbative predictions for Bc meson production in hadronic collisions." Physics Letters B 357, no. 4 (September 1995): 659–65. http://dx.doi.org/10.1016/0370-2693(95)00908-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

KRONFELD, ANDREAS S., I. F. ALLISON, C. AUBIN, C. BERNARD, C. T. H. DAVIES, C. DETAR, M. DI PIERRO, et al. "PREDICTIVE LATTICE QCD." International Journal of Modern Physics A 21, no. 04 (February 10, 2006): 713–19. http://dx.doi.org/10.1142/s0217751x06031934.

Full text

Abstract:

In the past year, we calculated with lattice QCD three quantities that were unknown or poorly known. They are the q2 dependence of the form factor in semileptonic D → Klν decay, the decay constant of the D meson, and the mass of the Bc meson. In this talk, we summarize these calculations, with emphasis on their (subsequent) confirmation by experiments.

APA, Harvard, Vancouver, ISO, and other styles

27

Hernández, E., J. Nieves, and J. M. Verde-Velasco. "Study of semileptonic and nonleptonic decays of the Bc - meson." European Physical Journal A 31, no. 4 (March 2007): 714–17. http://dx.doi.org/10.1140/epja/i2006-10270-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Paoletti, Simone. "χc production and search for the Bc meson at LEP." Nuclear Physics B - Proceedings Supplements 55, no. 1 (April 1997): 105–10. http://dx.doi.org/10.1016/s0920-5632(97)00160-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Issadykov, Aidos. "Study of the Bc → J/ψ + D(*)q decays in covariant confined quark model." EPJ Web of Conferences 177 (2018): 09007. http://dx.doi.org/10.1051/epjconf/201817709007.

Full text

Abstract:

In this work we study the Bc → J/ψ + D(*)q decays. It was defined ratios (RD*s/Ds, RD*/D, RD*/D*s and RD/Ds) of nonleptonic branching ratios of Bc meson, which will be hopefully tested on LHC experiments. We compare the obtained results with available experimental data and with the results from other theoretical approaches.

APA, Harvard, Vancouver, ISO, and other styles

30

Berezhnoy, A. V., I. N. Belov, A. K. Likhoded, and A. V. Luchinsky. "Bc excitations at LHC: first observations and further research prospects." EPJ Web of Conferences 222 (2019): 02009. http://dx.doi.org/10.1051/epjconf/201922202009.

Full text

Abstract:

Status of the Bc meson excitatons search is presented in our work. We discuss the 2S Bc states first discovered by ATLAS and newly confirmed by CMS and LHCb collaborations. We review the observation prospects for the rest predicted states (B∗c, 2P wave, 3P wave and D wave) at LHC experiments. Cascade decays to the ground state as well as direct decays to the lepton pair are regarded for these states.

APA, Harvard, Vancouver, ISO, and other styles

31

Anisimov, A. Yu, I. M. Narodetskii, C. Semay, and B. Silvestre-Brac. "The Bc meson lifetime in the light-front constituent quark model." Physics Letters B 452, no. 1-2 (April 1999): 129–36. http://dx.doi.org/10.1016/s0370-2693(99)00273-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Kiselev, V. V., A. K. Likhoded, and A. I. Onishchenko. "Semileptonic Bc-meson decays in sum rules of QCD and NRQCD." Nuclear Physics B 569, no. 1-3 (March 2000): 473–504. http://dx.doi.org/10.1016/s0550-3213(99)00505-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Chang, Chao-Hsi, Chafik Driouichi, Paula Eerola, and Xing-Gang Wu. "BCVEGPY: an event generator for hadronic production of the Bc meson." Computer Physics Communications 159, no. 3 (June 2004): 192–224. http://dx.doi.org/10.1016/j.cpc.2004.02.005.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Dominguez, C. A., K. Schilcher, and Y. L. Wu. "QCD determination of the leptonic decay constant of the Bc-meson." Physics Letters B 298, no. 1-2 (January 1993): 190–94. http://dx.doi.org/10.1016/0370-2693(93)91729-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

IKHDAIR, SAMEER M., and RAMAZAN SEVER. "Bc AND HEAVY MESON SPECTROSCOPY IN THE LOCAL APPROXIMATION OF THE SCHRÖDINGER EQUATION WITH RELATIVISTIC KINEMATICS." International Journal of Modern Physics A 20, no. 17 (July 10, 2005): 4035–54. http://dx.doi.org/10.1142/s0217751x05022275.

Full text

Abstract:

We present bound state masses of the self-conjugate and non-self-conjugate mesons in the context of the Schrödinger equation taking into account the relativistic kinematics and the quark spins. We apply the usual interaction by adding the spin dependent correction. The hyperfine splittings for the 2S charmonium and 1S bottomonium are calculated. The pseudoscalar and vector decay constants of the Bc meson and the unperturbed radial wave function at the origin are also calculated. We have obtained a local equation with a complete relativistic corrections to a class of three attractive static interaction potentials of the general form V(r) = -Ar-β+κrβ+V0, with β = 1, 1/2, 3/4 which can also be decomposed into scalar and vector parts in the form VV(r) = -Ar-β+(1-∊)κrβ and VS(r) = ∊κrβ+V0; where 0≤∊≤1. The energy eigenvalues are carried out up to the third order approximation using the shifted large-N-expansion technique.

APA, Harvard, Vancouver, ISO, and other styles

36

Choi, Myoung-Taek, and Jae Kwan Kim. "Determination of |Vcb| from the polarization of vector meson in the semileptonic decay of B and Bc meson." Physics Letters B 419, no. 1-4 (February 1998): 377–80. http://dx.doi.org/10.1016/s0370-2693(97)01480-9.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Onishchenko, A. I., and O. L. Veretin. "Two-loop QCD corrections to the leptonic constant of the Bc-meson." European Physical Journal C 50, no. 4 (March 15, 2007): 801–8. http://dx.doi.org/10.1140/epjc/s10052-007-0255-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Shen, Dandan, Huimin Ren, Fan Wu, and Ruilin Zhu. "Bc → J/ψ tensor form factors at large momentum recoil." International Journal of Modern Physics A 36, no. 19 (July 3, 2021): 2150135. http://dx.doi.org/10.1142/s0217751x21501359.

Full text

Abstract:

We present a next-to-leading order (NLO) relativistic correction to [Formula: see text] tensor form factors within nonrelativistic QCD (NRQCD). We also consider complete Dirac bilinears [Formula: see text] with [Formula: see text] matrices [Formula: see text] in the [Formula: see text] transition. The relation among different current form factors is given and it shows that symmetries emerge in the heavy bottom quark limit. For a phenomenological extension, we propose to extract the long-distance matrix elements (LDMEs) for [Formula: see text] meson from the recent HPQCD lattice data and the NLO form factors at large momentum recoil.

APA, Harvard, Vancouver, ISO, and other styles

39

Cui, Bo-Yan, Ai-Jun Ma, Ying-Ying Fan, and Fu-Hu Liu. "Quasi-two-body decays Bc → ηc(1S,2S)D0∗+(2400) → ηc(1S,2S)D0π+ in the perturbative QCD approach." International Journal of Modern Physics A 34, no. 33 (November 30, 2019): 1950222. http://dx.doi.org/10.1142/s0217751x19502221.

Full text

Abstract:

We extend our recent works on the resonant state [Formula: see text] in the quasi-two-body [Formula: see text] meson decays to the [Formula: see text] cases within the perturbative QCD approach. With the help of the two-meson distribution amplitudes, we calculate the [Formula: see text]-averaged branching fractions and direct [Formula: see text] violations of the quasi-two-body decays [Formula: see text] in this work. We also present the [Formula: see text] invariant mass dependence of the differential branching fraction for the considered decay modes. Our results could be tested by further experiments in the LHCb.

APA, Harvard, Vancouver, ISO, and other styles

40

Ikhdair, Sameer M., and Ramazan Sever. "Bc Meson Spectrum and Hyperfine Splittings in the Shifted Large-N-Expansion Technique." International Journal of Modern Physics A 18, no. 23 (September 20, 2003): 4215–31. http://dx.doi.org/10.1142/s0217751x03015088.

Full text

Abstract:

In the framework of potential models for heavy quarkonium, we compute the mass spectrum of the bottom-charmed Bc meson system and spin-dependent splittings from the Schrödinger equation using the shifted-large-N expansion technique. The masses of the lightest vector [Formula: see text] and pseudoscalar Bc states as well as the higher states below the threshold are estimated. Our predicted result for the ground state energy is [Formula: see text] MeV and are generally in exact agreement with earlier calculations. Calculations of the Schrödinger energy eigenvalues are carried out up to the third order of the energy series. The parameters of each potential are adjusted to obtain best agreement with the experimental spin-averaged data (SAD). Our findings are compared with the observed data and with the numerical results obtained by other numerical methods.

APA, Harvard, Vancouver, ISO, and other styles

41

IKHDAIR, SAMEER M., and RAMAZAN SEVER. "CALCULATION OF THE Bc LEPTONIC DECAY CONSTANT USING THE SHIFTED N-EXPANSION METHOD." International Journal of Modern Physics A 21, no. 32 (December 30, 2006): 6699–714. http://dx.doi.org/10.1142/s0217751x06034100.

Full text

Abstract:

We give a review and present a comprehensive calculation for the leptonic constant fBc of the low-lying pseudoscalar and vector states of Bc-meson in the framework of static and QCD-motivated nonrelativistic potential models taking into account the one-loop and two-loop QCD corrections in the short distance coefficient that governs the leptonic constant of Bc quarkonium system. Further, we use the scaling relation to predict the leptonic constant of the nS-states of the [Formula: see text] system. Our results are compared with other models to gauge the reliability of the predictions and point out differences.

APA, Harvard, Vancouver, ISO, and other styles

42

IKHDAIR, SAMEER M., and RAMAZAN SEVER. "MASS SPECTRA OF HEAVY QUARKONIA AND Bc DECAY CONSTANT FOR STATIC SCALAR-VECTOR INTERACTIONS WITH RELATIVISTIC KINEMATICS." International Journal of Modern Physics A 20, no. 28 (November 10, 2005): 6509–31. http://dx.doi.org/10.1142/s0217751x05021294.

Full text

Abstract:

We reproduce masses of the self-conjugate and non-self-conjugate mesons in the context of the spinless Salpeter equation taking into account the relativistic kinematics and the quark spins. The hyperfine splittings for the 2S charmonium and 1S bottomonium are also calculated. Further, the pseudoscalar and vector decay constants of the Bc meson and the unperturbed radial wave function at the origin are also calculated. We have obtained a local equation with a complete relativistic corrections to a class of three attractive static interaction potentials of the general form V(r) = -Ar-β + κrβ + V0, with β = 1, 1/2, 3/4 decomposed into scalar and vector parts in the form VV(r) = -Ar-β + (1-∊)κrβ and VS(r) = ∊κrβ + V0; where 0≤∊≤1. We have used the shifted large-N-expansion technique (SLNET) to solve the reduced equation for the scalar (∊ = 1), equal mixture of scalar-vector (∊ = 1/2), and vector (∊ = 0) confinement interaction kernels. The energy eigenvalues are carried out up to the third order approximation.

APA, Harvard, Vancouver, ISO, and other styles

43

McNeil, M. "Search for Bc and ϒ in Hadronic Z Decays." International Journal of Modern Physics A 12, no. 22 (September 10, 1997): 3921–30. http://dx.doi.org/10.1142/s0217751x97002073.

Full text

Abstract:

Out of 3.9 million hadronic Z decays collected by the ALEPH detector, a sample of approximately 700 J/ψ events decaying into e+ e- or μ+μ- are selected. A search for the Bc meson decaying into the channels J/ψπ+, J/ψe+νe and J/ψμ+νμ is then performed, resulting in the observation of 0, 1 and 1 candidate in each of these channels respectively, with 0.37, 0.28 and 0.36 background events expected. The following 90% confidence level upper limits are derived: [Formula: see text] An intriguing candidate, found in an independent analysis, is also described in detail. Using the same data sample, a search is performed for the ϒ(1S), ϒ(2S) and ϒ(3S) states, decaying into either e+e- or μ+μ-. After kinematic and topological cuts a total of 1.2 ± 0.4 background events are expected for both channels in the mass window chosen. Two events are observed, allowing the following 90% confidence level branching fraction upper limit to be derived: [Formula: see text]

APA, Harvard, Vancouver, ISO, and other styles

44

Mansour, Hesham, and Ahmed Gamal. "Bound State of Heavy Quarks Using a General Polynomial Potential." Advances in High Energy Physics 2018 (December 17, 2018): 1–7. http://dx.doi.org/10.1155/2018/7269657.

Full text

Abstract:

In the present work, the mass spectra of the bound states of heavy quarks cc-,bb-, and Bc meson are studied within the framework of the nonrelativistic Schrödinger’s equation. First, we solve Schrödinger’s equation with a general polynomial potential by Nikiforov-Uvarov (NU) method. The energy eigenvalues for any L- value is presented for a special case of the potential. The results obtained are in good agreement with the experimental data and are better than previous theoretical studies.

APA, Harvard, Vancouver, ISO, and other styles

45

Yang, Zhi, Xing-Gang Wu, and Xian-You Wang. "BEEC: An event generator for simulating the Bc meson production at an e+e− collider." Computer Physics Communications 184, no. 12 (December 2013): 2848–55. http://dx.doi.org/10.1016/j.cpc.2013.07.016.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Jena, S. N., P. K. Nanda, S. Sahoo, and S. Panda. "An independent quark model study of weak leptonic decays of pseudoscalar mesons." International Journal of Modern Physics A 30, no. 16 (June 9, 2015): 1550092. http://dx.doi.org/10.1142/s0217751x1550092x.

Full text

Abstract:

An independent quark model with a relativistic power-law potential is used to study the weak leptonic decays of light and heavy pseudoscalar mesons. The partial decay width and the decay constant for the weak leptonic decay are derived from the quark–antiquark momentum distribution amplitude which is obtained from the bound quark eigenfunction with the assumption of a strong correlation existing between quark–antiquark momenta inside the decaying meson in its rest frame. The model parameters are first determined from the application of the model to study the ground state hyperfine splitting of ρ, K, D, Ds, B, Bs and Bc mesons. The same model with no adjustable parameters is then used to evaluate the decay constants fM and the decay widths of pseudoscalar mesons. The model predictions agree quite well with the available experimental data as well as with those of several other models. The decay constant for pion and kaon are obtained as fπ = 132 MeV and fk = 161 MeV which closely agree with experimental values. But in case of heavier mesons for which experimental data are not yet available, the present model gives its predictions as fBC > fBS > fB, fDS > fD, fD > fB and fπ > fB which are in conformity with most of other model predictions. The model predictions of the corresponding decay widths and the branching ratios for the [Formula: see text] and [Formula: see text] decay modes are in close agreement with the available experimental data.

APA, Harvard, Vancouver, ISO, and other styles

47

Mahmood, Shakeel, Farida Tahir, and Azeem Mir. "New physics through interference of nonstandard interactions with Standard Model in rare decays of Bc+ meson." Modern Physics Letters A 33, no. 30 (September 28, 2018): 1850171. http://dx.doi.org/10.1142/s0217732318501717.

Full text

Abstract:

We investigate the nonstandard neutrino interactions (NSI) in the rare decays of [Formula: see text] mesons involving neutrinos in the final state. It is suggested that the interference between Standard Model and nonstandard interaction can provide sizeable contribution. We calculate the limits on NSI free parameters ([Formula: see text], [Formula: see text]) and compare them with experimental data.

APA, Harvard, Vancouver, ISO, and other styles

48

Chang, Chao-Hsi, Xian-You Wang, and Xing-Gang Wu. "BCVEGPY2.2: A newly upgraded version for hadronic production of the meson Bc and its excited states." Computer Physics Communications 197 (December 2015): 335–38. http://dx.doi.org/10.1016/j.cpc.2015.07.015.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

IKHDAIR, SAMEER M., and RAMAZAN SEVER. "SPECTROSCOPY OF Bc MESON IN A SEMI-RELATIVISTIC QUARK MODEL USING THE SHIFTED LARGE-N EXPANSION METHOD." International Journal of Modern Physics A 19, no. 11 (April 30, 2004): 1771–91. http://dx.doi.org/10.1142/s0217751x0401780x.

Full text

Abstract:

We calculate the [Formula: see text] mass spectrum, the splitting values and some other properties in the framework of the semirelativistic equation by applying the shifted large-N expansion technique. We use seven different central potentials together with an improved QCD-motivated interquark potentials calculated to two loops in the modified minimal-subtraction [Formula: see text] scheme. The parameters of these potentials are fitted to generate the semirelativistic bound states of [Formula: see text] quarkonium system in close conformity with the experimental and the present available calculated center-of-gravity (c.o.g.) data. Calculations of the energy bound states are carried out up to third order. Our results are in excellent fit with the results of the other works.

APA, Harvard, Vancouver, ISO, and other styles

50

Wang, Wei, and Ruilin Zhu. "Model-independent investigation of the RJ/ψ,ηc and ratios of decay widths of semileptonic Bc decays into a P-wave charmonium." International Journal of Modern Physics A 34, no. 31 (November 10, 2019): 1950195. http://dx.doi.org/10.1142/s0217751x19501951.

Full text

Abstract:

Experimental measurements of decay branching fractions of semitaunic and semimuonic [Formula: see text] into [Formula: see text] have challenged the lepton flavor universality in standard models with about two standard deviations. In this paper, we first investigate the unitary constraint on form factors of [Formula: see text] meson into [Formula: see text]-wave and [Formula: see text]-wave charmonium. Such constraint leads to the exploration of the [Formula: see text] and other ratios [Formula: see text], [Formula: see text], and [Formula: see text] in a model-independent way. These results together with future experimental measurements can be used to explore the lepton flavor universality in a more systematic way. In addition, we point out that the helicity-dependent ratios [Formula: see text] and [Formula: see text] can also provide complementary information.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!