Results 111 to 120 of about 1,179 (216)

Revising the mass of light hybrid mesons: NLO QCD sum rules point to ϕ(2170) as a prime candidate

Journal of High Energy Physics
We present a comprehensive next-to-leading order (NLO) QCD sum rule analysis for light hybrid mesons with J PC = 1 −− , incorporating condensates up to dimension-8 and NLO corrections to the perturbative, gluon condensate, and four-quark condensate ...
Shuang-Hong Li, Zhuo-Ran Huang, Wei Chen, Hong-Ying Jin   +3 more
doaj   +1 more source

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

QCD thermodynamics from the lattice

, 2009
We review the current methods and results of lattice simulations of quantum chromodynamics at nonzero temperatures and densities. The review is intended to introduce the subject to interested nonspecialists and beginners.
C. E. DeTar, U. M. Heller
core   +1 more source

Exploring Efimov states in D * D * D * and DD * D * three-body systems

Journal of High Energy Physics
The Efimov effect is an intriguing three-body quantum phenomenon. Searching for Efimov states within the realms of nuclear and hadronic physics presents a challenge due to the inherent inability of natural physical systems to exhibit adjustable two-body ...
Hai-Long Fu, Yong-Hui Lin, Feng-Kun Guo, Hans-Werner Hammer, Ulf-G. Meißner, Akaki Rusetsky, Xu Zhang   +6 more
doaj   +1 more source

Dielectron production in C+C and p+p collisions with HADES

, 2007
9 pages.-- HADES Collaboration: et al.The High Acceptance Di-Electron Spectrometer HADES has been constructed at the SIS accelerator (GSI Darmstadt) to investigate electron-positron pairs produced in proton, pion and heavy ion induced reactions. The main
Pietraszko, J., Díaz Medina, José
core   +1 more source

The ρ(770, 1450) → ωπ contributions for three-body decays B → D ¯ ∗ ωπ $$ B\to {\overline{D}}^{\left(\ast \right)}\omega \pi $$

Journal of High Energy Physics
The decays B → D ¯ ∗ ωπ $$ B\to {\overline{D}}^{\left(\ast \right)}\omega \pi $$ are very important for the investigation of ρ excitations and the test of factorization hypothesis for B meson decays. The B + → D ¯ ∗ 0 ω π + $$ {B}^{+}\to {\overline{D}}^{\
Yu-Shan Ren, Ai-Jun Ma, Wen-Fei Wang
doaj   +1 more source

Z c and Z cs systems with operator mixing at NLO in QCD sum rules

Journal of High Energy Physics
We study the mass spectra of hidden-charm tetraquark systems with quantum numbers (I G )J P = (1+)1+ (and their I = 1 2 $$ \frac{1}{2} $$ partners) using QCD sum rules.
Ren-Hua Wu, Chen-Yu Wang, Ce Meng, Yan-Qing Ma, Kuang-Ta Chao   +4 more
doaj   +1 more source

Structure and properties of hadrons at zero and finite temperature

, 1993
SIGLEAvailable from British Library Document Supply Centre- DSC:D177821 / BLDSC - British Library Document Supply CentreGBUnited ...
Moretto, T
core  

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

b hadron production, spectroscopy and properties at 13TeV

, 2018
Precise measurements of production and properties of hadrons containing a b quark, performed using data collected by the CMS experiment at the LHC, are reported. These are important to investigate underlying mechanisms in QCD describing heavy quarks. The
Argiro, Stefano
core