Relevant bibliographies by topics / Two body pion decay

Academic literature on the topic 'Two body pion decay'

Author: Grafiati
Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Two body pion decay"

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BOITO, DIOGO R., BRUNO EL-BENNICH, BENOÎT LOISEAU, and OLIVIER LEITNER. "RESONANCES AND WEAK INTERACTIONS IN D+→ π+π−π+ DECAYS." International Journal of Modern Physics E 16, no. 09 (October 2007): 2876–79. http://dx.doi.org/10.1142/s0218301307008628.

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We describe the ππS-wave in D+→ π+π−π+ decays using a unitary model for the ππ Final State Interactions (FSI). The three body decay is treated as a quasi two-body process where, at the weak vertex, the D meson decays into a resonance and a pion. The weak part of the decay amplitude is evaluated using the effective weak Hamiltonian within the factorization approximation.
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Estabar, T., and H. Mehraban. "Analysis of four-body decay of D meson." International Journal of Modern Physics A 32, no. 02n03 (January 25, 2017): 1750011. http://dx.doi.org/10.1142/s0217751x17500117.

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The aim of this work is to provide a phenomenological analysis of the contribution of [Formula: see text] meson to [Formula: see text], [Formula: see text] and [Formula: see text] quasi-three-body decays. Such that the analysis of mentioned four-body decays is summarized into three-body decay and several channels are observed. Based on the factorization approach, hadronic three-body decays receive both resonant and nonresonant contributions. We compute both contributions of three-body decays. As, there are tree, penguin, emission, and emission annihilation diagrams for these decay modes. Our theoretical model for [Formula: see text] decay is based on the QCD factorization to quasi-two body followed by [Formula: see text]-wave. This model for this decay following experimental information which demonstrated two pion interaction in the [Formula: see text]-wave is introduced by the scalar resonance. The theoretical values are [Formula: see text], [Formula: see text] and [Formula: see text], while the experimental results of them are [Formula: see text], [Formula: see text] and [Formula: see text], respectively. Comparing computation analysis values with experimental values show that our results are in agreement with them.
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SÁNCHEZ-COLÓN, G., and A. GARCÍA. "SYMMETRY LIMIT PROPERTIES OF DECAY AMPLITUDES WITH MIRROR MATTER ADMIXTURES." International Journal of Modern Physics A 22, no. 12 (May 10, 2007): 2265–81. http://dx.doi.org/10.1142/s0217751x07036300.

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We extend our previous analysis on the symmetry limit properties of nonleptonic and weak radiative decay amplitudes of hyperons in a scheme of mirror matter admixtures in physical hadrons to include the two-body nonleptonic decays of Ω- and the two-photon and two-pion decays of kaons. We show that the so-called parity-conserving amplitudes predicted for all the decays vanish in the strong flavor SU(3) symmetry limit. We also establish the specific conditions under which the corresponding so-called parity-violating amplitudes vanish in the same limit.
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CHAVEZ, CARLOS A., RAY F. COWAN, and W. S. LOCKMAN. "CHARM MESON MIXING: AN EXPERIMENTAL REVIEW." International Journal of Modern Physics A 27, no. 20 (August 6, 2012): 1230019. http://dx.doi.org/10.1142/s0217751x12300190.

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We review current experimental results on charm mixing and CP violation. We survey experimental techniques, including time-dependent, time-independent, and quantum-correlated measurements. We review techniques that use a slow pion tag from D*+→π+D0+ c.c. decays and those that do not, and cover two-body and multi-body D0 decay modes. We provide a summary of D-mixing results to date and comment on future experimental prospects at the LHC and other new or planned facilities.
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NOGUERA, S. "NON LOCAL LAGRANGIANS: THE PION." International Journal of Modern Physics E 16, no. 01 (January 2007): 97–132. http://dx.doi.org/10.1142/s021830130700565x.

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We define a family of non local and chirally symmetric low energy lagrangians motivated by theoretical studies on Quantum Chromodynamics. These models lead to quark propagators with non trivial momentum dependencies. We define the formalism for two body bound states and apply it to the pion. We study the coupling of the photon and W bosons with special attention to the implementation of local gauge invariance. We calculate the pion decay constant recovering the Goldberger-Treiman and the Gell-Mann-Oakes-Renner relations. We recover a form of the axial current consistent with PCAC. Finally we study the pion form factor and we construct the operators involved in its parton distribution.
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Tang, Liguang. "NEW ERA: STUDY LIGHT HYPERNUCLEI VIA TWO BODY DECAY PION SPECTROSCOPY USING CEBAF BEAM." International Journal of Modern Physics E 19, no. 12 (December 2010): 2638–43. http://dx.doi.org/10.1142/s0218301310017204.

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Combined with high precision on two body decay pions and the unique features of hypernuclear electro-production mechanism, a new experiment aims to effectively access the hypernuclear continuum which offers insight on a wide range of light hypernuclei with variety of possible ( Z , A ) combinations via production of hyper-fragments. Precise binding energies of various hypernuclear species allow us to address on most of the leading puzzles and inconsistencies and may lead to new important discoveries and findings.
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Deutchman, P. A. "Origins of the energy distribution structure in coherent pion production at intermediate energies." Canadian Journal of Physics 79, no. 8 (August 1, 2001): 1055–74. http://dx.doi.org/10.1139/p01-070.

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New calculations have been done that now cover the intermediate energy range from 100 MeV/nucleon to 2.0 GeV/nucleon incident energy for the reaction 12C + 12C [Formula: see text] 12C + 12C (15.11 MeV) +π0, where constructive, coherent Δ-hole states are excited in either nucleus while the companion nucleus is excited to a coherent nucleon–hole state describing the spin–isospin, giant resonant state at 15.11 MeV. The Δ (1232 MeV) isobar then decays to a nucleon and pion. Theoretical pion energy distributions are calculated and, for the first time, results above 400 MeV/nucleon are shown. A theoretical basis for understanding how the shapes of the pion distributions change as a function of incident energy is described. The fundamental shape of the Δ-production amplitude as a function of momentum transfer is discussed and the effects of the energy-dependent nuclear width are examined. Furthermore, the connection between the origins of the pion distribution to the final pion shapes is made and the importance of the giant resonance in providing an important signature is pointed out. By pushing the calculations above 400 MeV/nucleon, it was discovered that sliding kinematics and kinematic turnarounds occur due to the two-to-three-body sequential nature of the reactions and these effects determine the final structure of the pion distributions at higher incident energies. PACS Nos.: 24.10Cn, 24.30Cz, 25.70-z, 25.80-e
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Lähde, T. A., and D. O. Riska. "Pion rescattering in two-pion decay of heavy quarkonia." Nuclear Physics A 707, no. 3-4 (September 2002): 425–51. http://dx.doi.org/10.1016/s0375-9474(02)00964-8.

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BI, PIN-ZHEN, and JOHANN RAFELSKI. "π0 DECAY AT CRITICAL TEMPERATURE." Modern Physics Letters A 07, no. 27 (September 7, 1992): 2493–503. http://dx.doi.org/10.1142/s0217732392003955.

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The influence of temperature on the pion decay constant and the two-photon decay of π0 is considered near the chiral symmetry restoration point. We analyze how the mass and decay width relate to each other and find that the π0 decay width in hot matter is suppressed, provided that the pion mass vanishes at the critical point; it diverges if pion mass remains finite while quark condensate is dissolved at T c .
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Lähde, T. A., and D. O. Riska. "Two-pion decay widths of excited charm mesons." Nuclear Physics A 693, no. 3-4 (October 2001): 755–74. http://dx.doi.org/10.1016/s0375-9474(01)00917-4.

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Dissertations / Theses on the topic "Two body pion decay"

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Kimmel, Jr Taylor Douglas. "Analysis of Neutral D Meson Two-Body Decays to a Neutral Kaon and a Neutral Pion." Diss., Virginia Tech, 2021. http://hdl.handle.net/10919/105001.

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Decays of neutral D mesons to final states containing K + π's could provide evidence for CP-violation from a source not accounted for in the Standard Model. Due to the interference between Cabibbo-favored and Cabibbo-suppressed transitions, a decay rate asymmetry of D0 → K0S π0 compared to D0 → K0Lπ0 has been predicted to be non-zero. If New Physics interferes in doubly Cabibbo-suppressed D decays, the measurement of this asymmetry would differ from the predicted value and may provide evidence for CP-violation beyond the CKM mechanism. I present an analysis method to measure this branching fraction asymmetry, R(D0) ≡ B(D0→K0S π0)−B(D0→K0L π0)/(B(D0→K0Sπ0)+B(D0→K0Lπ0)), utilizing e+e− → cc events in the Belle dataset.
Doctor of Philosophy
The Universe appears to be made almost entirely of matter rather than antimatter; however, matter and antimatter should have been created in equal amounts in the Big Bang. We do not know exactly why we observe so much more matter as compared to antimatter. The Standard Model (SM) of particle physics accounts for some of the asymmetry through Charge-Parity (CP) symmetry violation, which explains how particles behave differently than their corresponding antiparticles. In the current state of the SM, some CP-violation is allowed in decays via the weak force, but the theory does not account for enough CP violation to explain the amount of matter-antimatter asymmetry observed in the Universe. Decays of a D meson to a kaon (K meson) plus one or more pions (π mesons) via a new mechanism beyond the weak force could provide evidence of a new source of CP-violation. In this analysis, I present a method for analyzing the decays of neutral D mesons to a neutral kaon and a neutral pion in the Belle dataset to test the SM.
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Brudvik, Jason William. "Measurement of the branching ratio for eta-meson decay into a neutral pion and two photons." Diss., Restricted to subscribing institutions, 2007. http://proquest.umi.com/pqdweb?did=1383485221&sid=1&Fmt=2&clientId=1564&RQT=309&VName=PQD.

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Robertson, Alan Iain. "Observation of the charmless two-body decay B → ′K∗ using data collected by the BABAR experiment." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/7860.

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A search for B decays to quasi two-body charmless final states involving a pseudoscalar η′ meson recoiling against a K∗ vector meson is described. This thesis primarily describes the analysis of two of the six possible decay channels, with the other four channels necessarily included as the subdecay modes are combined to give an overall branching fraction measurement. The method of analysis is a multivariate maximum likelihood fit for each subdecay channel. The likelihood curves for both modes are then combined, firstly with two other charged modes to yield an overall charged result, and finally the four charged modes are combined with two neutral modes to give an overall branching fraction and significance for the decay channel B → η′K∗. All results use the full Run 1 to Run 4 datasets, comprising 210.5 fb−1 of data, equivalent to 232 million BB pairs, gathered by the BABAR detector at Stanford Linear Accelerator Center in Menlo Park, California. The measured branching fractions and upper limits at 90% confidence limit (CL) are: B(B+ → η′ηππK∗+ K+π0) < 9.5 × 10−6B(B+ → η′ργK∗+ K+π0) < 22 × 10−6.The four-mode combined fit determined the branching fraction for the decay B+ → η′K∗+: B(B+ → η′K∗+) < 7.9 × 10−6. The six-mode combined fit determined the branching fraction for the decay B → η′K∗: B(B → η′K∗) = (4.1 ± 1.0 ± 0.5) × 10−6 at a significance of 5.6 standard deviations.
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Zhang, Daiqian. "Kaon to Two Pion decay from Lattice QCD and CP violation." Thesis, 2015. https://doi.org/10.7916/D8C828NS.

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We report a direct lattice calculation of the K to ππ (ΔI=1/2) decay amplitude A₀ on a 32³×64 ensemble, with 2+1 flavor Möbius Domain Wall Fermion, with a⁻¹=1.379(9) GeV. This is a complete and physical calculation: chiral symmetry breaking is controlled by the Möbius Domain Wall formalism; pion and kaon masses are simulated at their near-physical values, mκ≅490 MeV and mπ≅140 MeV. G-parity boundary conditions are used to realize correct kinematics for the final two-pion state and give E_{ππ(I=0)}≅498 MeV, while keeping isospin symmetry; all 10 ΔS=1 operators are considered, each of which involve the notorious disconnected diagrams. With this setup, we are able to resolve, for the first time, the physical decay amplitudes Re(A₀) and Im(A₀) from 0. The Re(A₀) amplitude agrees with its experimental value, The result for Im(A₀) is used, in combination with the lattice calculated decay amplitude A₂, to compute Re(ϵ'/ϵ), which evaluates to 1.38(5.08)×10⁻⁴ and agrees at the 2σ level with the experimental value 1.66(0.23)×10⁻³. This is a major step towards understanding and testing CP violation in the standard model. Several measurement techniques are used to increase computational efficiency. We use all-to-all propagators to construct finite sized mesons, which have a better overlap with the meson ground state and reducing statistical noise from the vacuum graphs. This also saves matrix-inversion overhead when constructing mesons with different momenta. The other technical improvements include the mixed-precision conjugate gradient algorithm, and optimized fast Fourier transformation. We also discuss the cross-checks on the use of G-parity boundary conditions, and estimate several important systematic errors.
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Farkaš, Kristián. "Dvousmyčkové chirální korekce k rozpadu neutrálního pionu na elektron-pozitronový pár." Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-397699.

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This thesis is devoted to the rare decay π0 → e+ e− . We firstly introduce all theoretical knowledge necessary for the description of the vertices used in this work. Subsequently, we introduce three two-loop chiral Feynman diagrams, which are of order O(α2 p4 ). These diagrams are firstly decomposed to Master integrals by Laporta algorithm. After that, we calculate each Master integral individually by the differential equation technique. We also focus on the renormalization of the process. Since we are working with the effective field theory, finite corrections χ from counterterm diagrams naturally appear. With use of the calculations listed in this thesis, the determination of the parameter χR could be further improved taking into account the whole two-loop correction. 1
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Books on the topic "Two body pion decay"

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Prima. Official Sega Genesis: Power Tips Book. Rocklin, CA: Prima Publishing, 1992.

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Rodriguez, Jorge Luis. Exclusive two body decays of the bottom meson. 1995.

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Book chapters on the topic "Two body pion decay"

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Riska, D. O. "Pion Decay of Heavy-Light Mesons." In Few-Body Problems in Physics ’02, 19–24. Vienna: Springer Vienna, 2003. http://dx.doi.org/10.1007/978-3-7091-6728-1_4.

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Schwamb, M., and H. Arenhövel. "The Two-Nucleon System beyond the Pion Threshold." In Few-Body Problems in Physics ’02, 77–82. Vienna: Springer Vienna, 2003. http://dx.doi.org/10.1007/978-3-7091-6728-1_18.

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Kamalov, S. S., L. Tiator, and C. Bennhold. "Two-body Mechanisms in Pion Scattering and Pion Photoproduction on the Trinucleon." In Mesons and Light Nuclei ’95, 297–301. Vienna: Springer Vienna, 1995. http://dx.doi.org/10.1007/978-3-7091-9453-9_44.

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Faccioli, Pietro, and Carlos Lourenço. "Two-Body Decay Distributions Beyond the Dilepton Case." In Particle Polarization in High Energy Physics, 243–81. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-08876-6_7.

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AbstractThis chapter illustrates the general method to calculate the shape of the angular distribution for any considered two-body decay, and surveys examples for different kinds of initial particles, with integer or halfinteger J. We describe the dependences of the angular distribution shapes on J, Jz and the identity of the decay products, as well as the physical domains of the observable parameters. We also discuss how the measurement of the decay angular distribution can lead to the determination of J for an unidentified decaying particle.
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Obukhovsky, I., and A. Obukhovsky. "Pionic decay of possible d 1 dibaryon and models of quark-pion and NN interaction." In Few-Body Problems in Physics ’98, 499–502. Vienna: Springer Vienna, 1999. http://dx.doi.org/10.1007/978-3-7091-6798-4_98.

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Winckler, N., F. Bosch, and Y. A. Litvinov. "Two-body beta decay of stored few-electron ions." In TCP 2010, 103–14. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-2588-1_11.

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Behr, J. A., M. R. Pearson, C. Höhr, B. Dej, A. Gaudin, K. P. Jackson, J. R. A. Pitcairn, et al. "Ion detection from beta decay and two-body decay experiments with laser-cooled atoms." In TCP 2006, 197–204. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-73466-6_25.

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Oset, E., F. Cano, J. A. Gómez Tejedor, E. Hernández, and M. J. Vicente Vacas. "Recent Developments in one and two Pion Production in Elementary Reactions and Few-Body Systems." In Few-Body Problems in Physics ’95, 133–44. Vienna: Springer Vienna, 1995. http://dx.doi.org/10.1007/978-3-7091-9427-0_18.

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Sharma, Lt Col Rohit, and Maj Anson Jose. "Gunshot Injuries of the Maxillofacial Region." In Oral and Maxillofacial Surgery for the Clinician, 1267–81. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-1346-6_59.

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AbstractThe current principles and pillars in the management of gunshot maxillofacial injuries have largely been the result of an exhaustive experimental approach spanning centuries of warfare. However, while medical professionals endlessly strive to revolutionize healthcare in combat injury, there are simultaneous efforts directed towards creation of new and ever more lethal arms and ammunition. Consequently, these doctrines continue to undergo significant transformations with a contemporary understanding of war injuries as well as the advent of new surgical materials and modern instrumentation. Previously accepted principles like external pin fixations without adequate exposure of bony fragments, fracture stabilization using intra-osseous wiring and inter-maxillary fixation, minimal attention to primary soft tissue closure and delay in definitive management have been sidelined for most of the part. On the other hand, new principles have evolved that including adequate exposure of fracture fragments and precise anatomic rigid fixation, immediate bone grafting, definitive soft tissue management and early definitive repair allowing for better return of patients to their pre-traumatic appearance.
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Park, H. S., G. Blewitt, B. G. Cortez, G. W. Foster, W. Gajewski, T. J. Haines, D. Kielczewska, et al. "Experimental Limits on the Nucleon Lifetime for Two- and Three-Body Decay Modes." In Neutrinos and Other Matters, 434–37. WORLD SCIENTIFIC, 1991. http://dx.doi.org/10.1142/9789814343060_0068.

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Conference papers on the topic "Two body pion decay"

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Tang, Liguang. "NEW ERA: STUDY LIGHT HYPERNUCLEI VIA TWO BODY DECAY PION SPECTROSCOPY USING CEBAF BEAM." In Proceedings of the Sendai International Symposium. WORLD SCIENTIFIC, 2009. http://dx.doi.org/10.1142/9789814277860_0047.

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Christ, Norman H. "Calculating the two-pion decay and mixing of neutral K mesons." In The 30th International Symposium on Lattice Field Theory. Trieste, Italy: Sissa Medialab, 2012. http://dx.doi.org/10.22323/1.164.0008.

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Feng, Xu. "The Two-Photon Decay of the Neutral Pion from Lattice QCD." In The 30th International Symposium on Lattice Field Theory. Trieste, Italy: Sissa Medialab, 2012. http://dx.doi.org/10.22323/1.164.0180.

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Zhukov, M. V., L. V. Grigorenko, Lídia S. Ferreira, and Paramasivan Arumugan. "Two-proton radioactivity and three-body decay. Integral formulae for decay widths." In Proton Emitting Nuclei and Related Topics. AIP, 2007. http://dx.doi.org/10.1063/1.2827241.

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Menéndez, Javier, Osvaldo Civitarese, Ivan Stekl, and Jouni Suhonen. "Chiral Two-body Currents and Neutrinoless Double Beta Decay." In WORKSHOP ON CALCULATION OF DOUBLE-BETA-DECAY MATRIX ELEMENTS (MEDEX '11). AIP, 2011. http://dx.doi.org/10.1063/1.3671041.

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Haidenbauer, J., K. Holinde, and A. W. Thomas. "Nucleon-nucleon model with consistently soft form factors for one and two pion exchange." In The 14th international conference of few-body problems in physics. AIP, 1995. http://dx.doi.org/10.1063/1.48137.

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Pate, S. F., W. Fong, M. T. Harvey, J. L. Matthews, H. T. Park, L. L. Vidos, V. V. Zelevinsky, et al. "Two-nucleon processes in pion-induced double charge exchange in 4He: A coincidence measurement of the 4He(π+,π− p)3p reaction." In The 14th international conference of few-body problems in physics. AIP, 1995. http://dx.doi.org/10.1063/1.48148.

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Neacsu, Andrei, Livius Trache, Alexei Smirnov, and Sabin Stoica. "Shell Model Two Body Matrix Elements Calculations for the Neutrinoless Double Beta Decay of [sup 48]Ca." In EXOTIC NUCLEI AND NUCLEAR∕PARTICLE ASTROPHYSICS (III): From Nuclei to Stars. AIP, 2010. http://dx.doi.org/10.1063/1.3527234.

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Avalos, Gustavo O. Guarniz, Juan B. V. Wanderley, and Antonio C. Fernandes. "Roll Damping Decay of a FPSO With Bilge Keel." In ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-10797.

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The roll damping decay is investigated for a Floating Production Storage and Offloanding (FPSO). For this purpose, a roll decay test of FPSO is simulated by means of the numerical solution of the incompressible two-dimensional Navier-Stokes equations. The numerical results are compared with experimental data for validating the numerical scheme implemented. The simulations indicated the strong influence of the bilge radius in the damping coefficient of the FPSO section. Interesting results were obtained regarding the time series of the displacement of the body and vortex shedding around the bilge keel.
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Ahmadvand, M., A. F. Najafi, and S. Shahidinejad. "Boundary Layer Solution for Laminar Swirling Decay Pipe Flow." In ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37375.

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In this study the hydraulic-thermal developing laminar swirling pipe flow is investigated numerically. Solution is based on the integral boundary layer method Uniform and solid body rotation distributions are considered for the axial and tangential velocities at the entry, respectively. Due to wall stress, viscous region is assumed to contain two boundary layers for axial and tangential velocities. Outside of the boundary layers’ edge the flow pattern is considered to remains uniform in axial direction and forced vortex in tangential direction. Inside boundary layers parabolic velocity and temperature profiles were considered for axi-symmetric flow pattern with uniform heat flux (UHF) condition on the pipe wall. Making use of the fourth-order Runge-Kutta scheme, the numerical solution of the governing differential equations is obtained. As an alternative solution, a CFD analysis based on the finite-volume method, has been done. Finally validity of the numerical results was checked with those obtained by CFD.
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Reports on the topic "Two body pion decay"

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Jessop, Colin P. OBSERVATION OF EXCLUSIVE TWO-BODY B DECAYS TO KAONS AND PIONS. Office of Scientific and Technical Information (OSTI), May 2003. http://dx.doi.org/10.2172/813062.

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Lee, T. S. H., L. L. Kiang, and D. O. Riska. Two-body pion absorption on {sup 3}He at threshold. Office of Scientific and Technical Information (OSTI), August 1995. http://dx.doi.org/10.2172/166434.

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Cavoto, Gianluca. Measurements of Charmless Two-Body Charged B Decays with Neutral Pions and Kaons. Office of Scientific and Technical Information (OSTI), June 2002. http://dx.doi.org/10.2172/799108.

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Barrera, Barbara. Measurement of Branching Fractions for Two-Body Charmless B Decays to Charged Pions and Kaons at BaBar. Office of Scientific and Technical Information (OSTI), August 2000. http://dx.doi.org/10.2172/764974.

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Dallapiccola, Carlo. Measurement of Branching Fractions and Search for CP-violating Charge Asymmetries in Charmless Two-body B Decays into Pions and Kaons. Office of Scientific and Technical Information (OSTI), July 2001. http://dx.doi.org/10.2172/787183.

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Tonelli, Diego. First observation of the B$0\atop{s}$→K+K- decay mode, and measurement of the B0 and $0\atop{s}$ mesons decay-rates into two-body charmless final states at CDF. Office of Scientific and Technical Information (OSTI), November 2006. http://dx.doi.org/10.2172/911840.

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