Results 111 to 120 of about 67,186 (191)

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, Sw., 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., Petri, T. Nanut, Castro, A. Pereiro, Prim, M., Roney, M., Rotondo, M., Schneider, O., Schwanda, C., Schwartz, A. J., Serrano, J., Shwartz, B., Soffer, A., Whitehead, M., Yelton, J.   +37 more
openaire   +2 more sources

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

Probing leptophobic dark sector with a pseudoscalar portal in the NA64 experiment at CERN

Journal of High Energy Physics
We propose the possibility of discovering a light pseudoscalar particle a, axion-like particle (ALP), interacting mainly with quarks using the electron and photon scattering reaction chain e + Z → e + γ + Z; γ + Z → a + Z on nuclei in the NA64 experiment
Sergei N. Gninenko, Dmitry V. Kirpichnikov, Nikolai V. Krasnikov, Sergey Kuleshov, Valery E. Lyubovitskij, Alexey S. Zhevlakov   +5 more
doaj   +1 more source

Exclusive Channels in Photon-Photon Collisions at LEP

, 2002
The study of exclusive channels in photon-photon collisions at e+e- colliders allows to investigate the structure and the properties of hadrons in a very clean experimental environment.
Braccini, S.
core  

Critical properties of hadronic matter in thermodynamical models

Physics Letters B, 1976
Abstract The temperature T 0 in certain thermodynamical models for strongly interacting systems taken as the critical point yields directly the critical exponents for the specific heat and compressibility. We discuss the implications of thermodynamical scaling using various asymptotic conditions.
openaire   +2 more sources

Chiral properties of hadron correlators in nuclear matter

Nuclear Physics A, 2000
The constraints imposed by chiral symmetry on hadron correlation functions in nuclear medium are discussed. It is shown that these constraints imply a certain structure for the in-medium hadron correlators and lead to the cancelation of the order $ m_ $ term in the in-medium nucleon correlator.
openaire   +2 more sources

Tetraquarks at large M and large N

Journal of High Energy Physics
We study tetraquarks in large N QCD with heavy quarks, in the domain where non-relativistic quantum mechanics offers an adequate approximation. Within the regime of validity of the Born-Oppenheimer approximation, we systematically study and explicitly ...
Héloïse Allaman, Majid Ekhterachian, Filippo Nardi, Riccardo Rattazzi, Stefan Stelzl   +4 more
doaj   +1 more source

Rapidity and Energy Dependencies of Temperatures and Volume Extracted from Identified Charged Hadron Spectra in Proton-Proton Collisions at a Super Proton Synchrotron (SPS). [PDF]

Entropy (Basel), 2023
Yang PP, Liu FH, Olimov KK.
europepmc   +1 more source

The determination of the spin and parity of a vector-vector system

Journal of High Energy Physics
We present a construction of the reaction amplitude for the inclusive production of a resonance decaying to a pair of identical vector particles such as J/ψJ/ψ, ρρ, ϕϕ. The method provides the possibility of determining the spin and parity of a resonance
Liupan An, Ronan McNulty, Mikhail Mikhasenko   +2 more
doaj   +1 more source

Streamlined jet tagging network assisted by jet prong structure

Journal of High Energy Physics
Attention-based transformer models have become increasingly prevalent in collider analysis, offering enhanced performance for tasks such as jet tagging. However, they are computationally intensive and require substantial data for training. In this paper,
A. Hammad, Mihoko M. Nojiri
doaj   +1 more source