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Journal articles on the topic 'Bc meson, B physics'

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Published: 9 March 2023

Last updated: 10 March 2023

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1

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.

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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.

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2

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.

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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.

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3

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.

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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.

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4

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.

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5

GERSHTEIN, S. S., A. K. LIKHODED, and S. R. SLABOSPITSKY. "GENERAL CHARACTERISTICS OF Bc-MESONS: PRODUCTION MECHANISMS AND DECAYS." International Journal of Modern Physics A 06, no. 13 (May 30, 1991): 2309–29. http://dx.doi.org/10.1142/s0217751x91001131.

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Using Martin’s potential, independently of b- and c-quark flavours, we calculate the mass spectrum of [Formula: see text]-mesons and widths of electromagnetic transition between them. We obtain the estimates of the production cross-section at e+e− colliders, in hadronic and neutrino interactions. A real possibility of observing Bc-mesons at LEP (up to 500 Bc per 106 Z0) and at hadron colliders [Formula: see text] has been pointed out. The importance of observing the annihilation decay channels of Bc-mesons—Bc→τντ( Br (Bc→τντ)=1.5–2%) and Bc→ϕDs, DK, etc.—has been emphasized.

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6

Routh, H., and V. P. Gautam. "Study of Radiative B Decay." Modern Physics Letters A 12, no. 36 (November 30, 1997): 2749–55. http://dx.doi.org/10.1142/s0217732397002892.

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Radiative B decays provide valuable information on some poorly known CKM matrix elements |Vtb| and |Vts|. So in our letter we propose to study the flavor changing radiative B decays corresponding to the inclusive b→ sγ and b→dγ decays. In this letter we discuss the radiative flavor changing B→ K**γ, Bs→ϕ;γ and the rare Bc→D*γ decays taking into account both the Penguin as well as weak annihilation contribution and it is found that weak annihilation contribution is negligible in case of decay of mesons consisting of light spectator, i.e. for B→K**γ and Bs→ϕ;γ but in case of decay of Bc→D*γ, weak annihilation contribution is the most dominating factor. It is also interesting to note that all the B→ K**γ, Bs→ϕ;γ and Bc→ D*γ decays have almost the same decay width because they have the same type of inclusive decay process b→ s(d)γ.

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7

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.

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8

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.

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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.

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9

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.

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10

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.

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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.

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11

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.

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12

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.

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13

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.

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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.

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14

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.

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15

Golutvin, A. I., Mikhail V. Danilov, and Yu M. Zaitsev. "B-Meson oscillations." Uspekhi Fizicheskih Nauk 157, no. 3 (1989): 369. http://dx.doi.org/10.3367/ufnr.0157.198903a.0369.

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16

Jönsson, Leif. "B meson physics with ARGUS." Nuclear Physics B - Proceedings Supplements 1, no. 2 (March 1988): 81–90. http://dx.doi.org/10.1016/0920-5632(88)90324-6.

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17

CLINE, DAVID B. "B MESON FACTORIES." Modern Physics Letters A 04, no. 26 (December 10, 1989): 2589–93. http://dx.doi.org/10.1142/s0217732389002896.

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Particle physics makes progress in three Frontiers: (1) High Energy Frontier, (2) High Intensity Frontier, and (3) High Precision Frontier. Category (1) will be dominated by the SSC and LHC experiments in the next decade and (3) by precise measurements of the (g−2)μ and sin2θw. In category (2) there will be a new round of intense “factories” constructed for rare K decays, [τ charm] studies, ϕ Factories and B Factories. Each of these Factories provide new physics possibilities as illustrated in Table 1. Note that the High Intensity Frontier is sometimes the same as the High Precision Frontier since high statistics are usually needed for high precision. In this brief note we describe some of the current possibilities for B Meson Factories.

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18

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.

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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.

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19

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.

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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.

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20

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.

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21

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.

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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.

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22

Wang, M. Z. "Baryonic B Meson Decays." Nuclear Physics B - Proceedings Supplements 167 (May 2007): 182–85. http://dx.doi.org/10.1016/j.nuclphysbps.2006.12.052.

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23

Huang, Xiaotao, Yu-Kuo Hsiao, Jike Wang, and Liang Sun. "Baryonic B Meson Decays." Advances in High Energy Physics 2022 (March 11, 2022): 1–9. http://dx.doi.org/10.1155/2022/4343824.

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We review the two- and three-body baryonic B decays with the dibaryon ( B B ′ ¯ ) as the final states. Accordingly, we summarize the experimental data of the branching fractions, angular asymmetries, and CP asymmetries. Using the W -boson annihilation (exchange) mechanism, the branching fractions of B ⟶ B B ′ ¯ are shown to be interpretable. In the approach of perturbative QCD counting rules, we study the three-body decay channels. In particular, we review the CP asymmetries of B ⟶ B B ′ ¯ M , which are promising to be measured by the LHCb and Belle II experiments. Finally, we remark the theoretical challenges in interpreting B B − ⟶ p p ¯ ρ − and B B − ⟶ p p ¯ μ − ν ¯ μ .

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24

Wegener, D. "Present status of B-meson physics." Nuclear Physics B - Proceedings Supplements 7, no. 1 (April 1989): 337–57. http://dx.doi.org/10.1016/0920-5632(89)90577-x.

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25

GROZIN, ANDREY. "B-MESON DISTRIBUTION AMPLITUDES." International Journal of Modern Physics A 20, no. 32 (December 30, 2005): 7451–84. http://dx.doi.org/10.1142/s0217751x05028570.

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B-meson light-cone distribution amplitudes are discussed in these lectures in the framework of HQET. The evolution equation for the leading-twist distribution amplitude is derived in one-loop approximation. QCD sum rules for distribution amplitudes are discussed.

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26

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.

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27

MILLER, DAVID H. "RECENT RESULTS IN B PHYSICS." Modern Physics Letters A 05, no. 32 (December 30, 1990): 2683–91. http://dx.doi.org/10.1142/s0217732390003139.

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28

Deshpande, N. G. "Penguin decays of B meson." Pramana 41, S1 (July 1993): 249–59. http://dx.doi.org/10.1007/bf02908087.

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29

Tarantino, Cecilia. "B-meson mixing and lifetimes." Nuclear Physics B - Proceedings Supplements 156, no. 1 (June 2006): 33–37. http://dx.doi.org/10.1016/j.nuclphysbps.2006.02.119.

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30

Stone, Sheldon. "Charmed semileptonic B meson decays." Nuclear Physics B - Proceedings Supplements 13 (February 1990): 261–69. http://dx.doi.org/10.1016/0920-5632(90)90068-6.

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31

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.

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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.

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32

Wyler, Daniel. "B-meson physics and the standard model." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 446, no. 1-2 (May 2000): 373–83. http://dx.doi.org/10.1016/s0168-9002(00)00052-8.

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33

Kundu, Anirban. "New physics effects from B meson decays." Pramana 55, no. 1-2 (July 2000): 265–70. http://dx.doi.org/10.1007/s12043-000-0104-3.

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34

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.

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35

Gibbons, L., and K. Honscheid. "B Meson Production and Decay,b-flavored hadrons." European Physical Journal C 15, no. 1-4 (January 1, 2000): 581–617. http://dx.doi.org/10.1007/bf02683462.

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36

Ladisa, M., G. Nardulli, and P. Santorelli. "Semileptonic and rare B meson decays into a light pseudoscalar meson." Physics Letters B 455, no. 1-4 (May 1999): 283–90. http://dx.doi.org/10.1016/s0370-2693(99)00386-x.

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37

Gronau, Michael. "CP Violation in B Meson Decays." Nuclear Physics B - Proceedings Supplements 142 (May 2005): 263–70. http://dx.doi.org/10.1016/j.nuclphysbps.2005.01.047.

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38

Golubev, Vladimir B. "B-meson semileptonic decays at BaBar." Nuclear Physics B - Proceedings Supplements 156, no. 1 (June 2006): 178–81. http://dx.doi.org/10.1016/j.nuclphysbps.2006.02.131.

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39

Rescigno, Marco. "B meson mixing at CDF II." Nuclear Physics B - Proceedings Supplements 156, no. 1 (June 2006): 43–47. http://dx.doi.org/10.1016/j.nuclphysbps.2006.02.143.

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40

Gardner, S. "Intrinsic charm in B-meson decays." Nuclear Physics B - Proceedings Supplements 115 (February 2003): 61–66. http://dx.doi.org/10.1016/s0920-5632(02)01954-0.

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41

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.

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42

Schubert, K. R. "CP violation in B-meson decays." European Physical Journal A 18, no. 2-3 (November 2003): 147–53. http://dx.doi.org/10.1140/epja/i2002-10290-6.

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43

Guazzini, Damiano, Rainer Sommer, and Nazario Tantalo. "Precision for B-meson matrix elements." Journal of High Energy Physics 2008, no. 01 (January 31, 2008): 076. http://dx.doi.org/10.1088/1126-6708/2008/01/076.

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44

Ali Khan, A., T. Bhattacharya, S. Collins, C. T. H. Davies, R. Gupta, C. Morningstar, J. Shigemitsu, and J. Sloan. "B meson decay constants from NRQCD." Physics Letters B 427, no. 1-2 (May 1998): 132–40. http://dx.doi.org/10.1016/s0370-2693(98)00323-2.

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45

Noguchi, S. "CP violation in B meson decays." Nuclear Physics A 721 (June 2003): C151—C160. http://dx.doi.org/10.1016/s0375-9474(03)01028-5.

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46

Irion, R. "HIGH-ENERGY PHYSICS: B-Meson Factories Make a." Science 291, no. 5508 (February 23, 2001): 1471. http://dx.doi.org/10.1126/science.291.5508.1471.

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47

SKWARNICKI, TOMASZ. "B Meson Physics with the Crystal Ball Detector." Annals of the New York Academy of Sciences 535, no. 1 International (July 1988): 303–8. http://dx.doi.org/10.1111/j.1749-6632.1988.tb51518.x.

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48

Narodetskii, I. M. "B-meson physics: CP violation and semileptonic decays." Physics of Atomic Nuclei 66, no. 11 (November 2003): 1972–88. http://dx.doi.org/10.1134/1.1625741.

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49

Egorychev, V. Yu, and I. M. Belyaev. "B c -meson physics in the LHCb experiment." Physics of Atomic Nuclei 78, no. 8 (November 2015): 968–72. http://dx.doi.org/10.1134/s1063778815080049.

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50

SCHUBERT, KLAUS R. "CP VIOLATION IN B-MESON DECAYS." International Journal of Modern Physics A 20, no. 02n03 (January 30, 2005): 385–98. http://dx.doi.org/10.1142/s0217751x05021555.

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After a short introduction on CP asymmetries in K and B meson decays, I discuss a few recent results related to CP violation, mainly from the BABAR experiment: CPT tests in [Formula: see text] mixing, search for CP violation in [Formula: see text] and [Formula: see text] decays, and measurements of the unitarity-triangle angle α in B →ππ and B →ρρ decays. I conclude with the result of a CKM-matrix fit to all relevant observations.

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