Results 71 to 80 of about 1,011 (161)

Averages of $b$-hadron, $c$-hadron, and $τ$-lepton properties as of 2023

This paper reports world averages of measurements of $b$-hadron, $c$-hadron, and $τ$-lepton properties obtained by the Heavy Flavour Averaging Group using results available before October 2023. In rare cases, significant results obtained several months later are also used.
Banerjee S., Ben-Haim E., Bernlochner F., Bertholet E., Bona M., Bozek A., Bozzi C., Brodzicka J., Chobanova V., Chrzaszcz M., Egede U., Gersabeck M., Goldenzweig P., Gharbi N., Grillo L., Hayasaka K., Humair T., Johnson D., Kuhr T., Leroy O., Lusiani A., Ma H. -L., Margoni M., Mizuk R., Naik P., Nanut Petric T., Pereiro Castro A., Prim M., Roney M., Rotondo M., Schneider O., Schwanda C., Schwartz A. J., Serrano J., Schwartz B., Soffer A., Whitehead M., Yelton J.   +37 more
openaire   +2 more sources

Hyperon semileptonic decays in QCD sum rules

Journal of High Energy Physics
We investigate the hyperon semileptonic decays within the framework of QCD sum rules. The flavor SU(3) symmetry breaking effects are analyzed via the relevant form factors and corresponding branching fractions.
Sheng-Qi Zhang, Xuan-Heng Zhang, Cong-Feng Qiao   +2 more
doaj   +1 more source

CP Violation: Differing Binding Energy Levels of Quarks and Antiquarks, and Their Transitions in Λ-Baryons and B-Mesons

Foundations
We consider spontaneous quark transitions between the Λ0 baryon and its resonant states, and (anti)quark transitions between the neutral kaon K0 and the two heavy ηq-mesons (q = c, b).
Dimitris M. Christodoulou, Demosthenes Kazanas   +1 more
doaj   +1 more source

On the Energy Budget of Quarks and Hadrons, Their Inconspicuous “Strong Charge”, and the Impact of Coulomb Repulsion on the Charged Ground States

Particles
We review and meta-analyze particle data and properties of hadrons with measured rest masses. The results of our study are summarized as follows. (1) The strong-force suppression of the repulsive Coulomb forces between quarks is sufficient to explain the
Dimitris M. Christodoulou, Demosthenes Kazanas   +1 more
doaj   +1 more source

Gravitational form factors of the baryon octet in holographic QCD

Journal of High Energy Physics
The gravitational form factors (GFFs) of the baryon octet, including hyperons, are investigated in a bottom-up holographic QCD model that explicitly incorporates the SU(3) flavor symmetry breaking through the strange quark mass.
Zhibo Liu, Hiroaki Nakajima, Hiroaki Abuki, Akira Watanabe   +3 more
doaj   +1 more source

A model independent method for measurement of B ± and B 0 meson production fractions at Υ(4S)

Journal of High Energy Physics
This paper presents a detailed description of a model-independent method for the direct measurement of the Υ(4S) → B + B − and Υ(4S) → B 0 B ¯ 0 $$ {B}^0{\overline{B}}^0 $$ production fractions at B factories.
M. Yasaveev, P. Pakhlov, N. Peters, A. Mufazalova   +3 more
doaj   +1 more source

Hypercentral Constituent Quark Model and Isospin for the Baryon Static Properties [PDF]

Journal of Sciences, Islamic Republic of Iran, 2005
So far the static properties of hadrons have been introduced in various models. The static properties of hadrons (charge radius, magnetic moment, etc.) are useful for understanding the quark structure of hadron.
doaj  

Diffusion Wake: A Distinctive Consequence of the Mach-Cone Wake Induced by Supersonic Jets in High-Energy Heavy-Ion Collisions. [PDF]

Research (Wash D C)
Yang Z, Wang XN.
europepmc   +1 more source

Spin in quantum chromodynamics. [PDF]

Sci Adv
Deshpande A, Kharzeev DE, Liao J.
europepmc   +1 more source

Properties of hadrons in the quark model

, 2022
This work focuses on developing a model that predicts the existence of some of the baryons measured experimentally, as well as explaining properties such as spin, parity and mass. This is done in the context of the quark model in quantum mechanics. The mathematical background is provided by the theory of groups and representations, presented briefly in
openaire   +2 more sources