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Meson

About: Meson is a(n) research topic. Over the lifetime, 31572 publication(s) have been published within this topic receiving 522330 citation(s).

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Papers
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Journal ArticleDOI: 10.1016/S0168-9002(01)00089-4
David Lange1Institutions (1)
Abstract: With several new B-physics experiments now taking data, the physics of B-meson decays will be studied in greater detail than previously possible. It is important to have a simulation of the underlying physics processes that is able to accurately describe this data. The EvtGen package provides a framework for the implementation of physics processes relevant to decays of B mesons and other resonances. Models of time dependent CP asymmetries in neutral B meson decays, semileptonic form-factor models, and a full decay table for B decays are a few of the implemented features.

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Topics: Semileptonic decay (55%), CP violation (54%), Dalitz plot (54%) ...read more

2,191 Citations


Journal ArticleDOI: 10.1016/S0031-9163(64)92001-3
Murray Gell-Mann1Institutions (1)
01 Feb 1964-Physics Letters
Abstract: If we assume that the strong interactions of baryons and mesons are correctly described in terms of the broken "eightfold way", we are tempted to look for some fundamental explanation of the situation. A highly promised approach is the purely dynamical "bootstrap" model for all the strongly interacting particles within which one may try to derive isotopic spin and strangeness conservation and broken eightfold symmetry from self-consistency alone. Of course, with only strong interactions, the orientation of the asymmetry in the unitary space cannot be specified; one hopes that in some way the selection of specific components of the F-spin by electromagnetism and the weak interactions determines the choice of isotopic spin and hypercharge directions.

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Topics: Eightfold Way (62%), Isospin (57%), Asymmetry (57%) ...read more

2,091 Citations


Open accessJournal ArticleDOI: 10.1103/PHYSREVD.22.2157
G. Peter Lepage1, Stanley J. Brodsky2Institutions (2)
01 Nov 1980-Physical Review D
Abstract: We present a systematic analysis in perturbative quantum chromodynamics (QCD) of large-momentum-transfer exclusive processes. Predictions are given for the scaling behavior, angular dependence, helicity structure, and normalization of elastic and inelastic form factors and large-angle exclusive scattering amplitudes for hadrons and photons. We prove that these reactions are dominated by quark and gluon subprocesses at short distances, and thus that the dimensional-counting rules for the power-law falloff of these amplitudes with momentum transfer are rigorous predictions of QCD, modulo calculable logarithmic corrections from the behavior of the hadronic wave functions at short distances. These anomalous-dimension corrections are determined by evolution equations for process-independent meson and baryon "distribution amplitudes" $\ensuremath{\varphi}({x}_{i}, Q)$ which control the valence-quark distributions in high-momentum-transfer exclusive reactions. The analysis can be carried out systematically in powers of ${\ensuremath{\alpha}}_{s}({Q}^{2})$, the QCD running coupling constant. Although the calculations are most conveniently carried out using light-cone perturbation theory and the light-cone gauge, we also present a gauge-independent analysis and relate the distribution amplitude to a gauge-invariant Bethe-Salpeter amplitude.

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  • Fig. 29
    Fig. 29
  • Fig. 11. Leading terms contributing to TH for the pion form factor. Disconnected diagrams (a) vanish when sandwiched between collinear projection operators.
    Fig. 11. Leading terms contributing to TH for the pion form factor. Disconnected diagrams (a) vanish when sandwiched between collinear projection operators.
  • Fig. 12
    Fig. 12
  • Fig. 14 a
    Fig. 14 a
  • Fig. 28b
    Fig. 28b
  • + 1

Topics: Light front quantization (69%), Quantum chromodynamics (58%), Quark (54%) ...read more

2,050 Citations


Journal ArticleDOI: 10.1103/PHYSREVD.32.189
Simon Capstick1, Nathan Isgur1Institutions (1)
01 Nov 1986-Physical Review D
Abstract: We have studied the three quark system in a relativized version of the quark potential model with chromodynamics. With parameters consistent with those of an analogous study of meson spectroscopy we obtain a successful description of the spectrum of baryons. The model naturally explains the apparent absence of spin‐orbit interactions in baryons.

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Topics: Bottom quark (63%), Quark (60%), Omega baryon (58%) ...read more

1,989 Citations


Journal ArticleDOI: 10.1103/PHYSREV.104.254
T. D. Lee1, Chen Ning Yang2Institutions (2)
01 Oct 1956-Physical Review
Abstract: The question of parity conservation in β decays and in hyperon and meson decays is examined. Possible experiments are suggested which might test parity conservation in these interactions.

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Topics: Parity (physics) (54%), Meson (53%), Hyperon (53%)

1,841 Citations


Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20222
2021525
2020623
2019712
2018691
2017767

Top Attributes

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Topic's top 5 most impactful authors

A. Jawahery

150 papers, 5.6K citations

B. Spaan

141 papers, 6.6K citations

C. Bozzi

108 papers, 5.6K citations

G. A. Cowan

87 papers, 5.1K citations

E. Grauges

77 papers, 4.1K citations

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