Results 11 to 20 of about 67,403 (210)

The mass spectrum and wave functions of the B c system

Journal of High Energy Physics, 2022
The spectrum and relativistic wave functions of B c system are investigated via solving the complete Salpeter equation. Emphases are put on the study of the partial waves of each J P state.
Guo-Li Wang, Tianghong Wang, Qiang Li, Chao-Hsi Chang   +3 more
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Probing proton structure with c c ¯ $$ \textrm{c}\overline{\textrm{c}} $$ correlations in ultraperipheral pA collisions

Journal of High Energy Physics, 2023
We study the exclusive diffractive c c ¯ $$ c\overline{c} $$ photoproduction in ultraperipheral pA collisions. The formalism makes use of off-diagonal generalizations of the unintegrated gluon distribution, the so-called generalized transverse momentum ...
Barbara Linek, Agnieszka Łuszczak, Marta Łuszczak, Roman Pasechnik, Wolfgang Schäfer, Antoni Szczurek   +5 more
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Averages of b-hadron, c-hadron, and τ-lepton properties as of 2018 [PDF]

European Physical Journal C: Particles and Fields, 2019
This paper reports world averages of measurements of $b$-hadron, $c$-hadron, and $ $-lepton properties obtained by the Heavy Flavor Averaging Group using results available through September 2018. In rare cases, significant results obtained several months later are also used.
Heavy Flavor Averaging Group (HFLAV), Amhis, Y., Banerjee, Sw., Ben-Haim, E., Bernlochner, F. U., Bona, M., Bozek, A., Bozzi, C., Brodzicka, J., Chrzaszcz, M., Dingfelder, J., Duell, S., Egede, U., Gersabeck, M., Gershon, T., Goldenzweig, P., Hayasaka, K., Hayashii, H., Johnson, D., Kenzie, M., Kuhr, T., Leroy, O., Li, H.-B., Lusiani, A., Ma, H.-L., Miyabayashi, K., Naik, P., Nanut, T., Patel, M., Pompili, A., Rama, M., Roney, M., Rotondo, M., Schneider, O., Schwanda, C., Schwartz, A. J., Shwartz, B., Serrano, J., Soffer, A., Tonelli, D., Urquijo, P., Van Kooten, R., Yelton, J.   +42 more
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Generalized parton distributions through universal moment parameterization: zero skewness case

Journal of High Energy Physics, 2022
We present a global analysis program for the generalized parton distributions (GPDs) based on conformal moment expansion. We apply the strategy of universal moment parameterization to fit both the collinear parton distribution functions (PDFs) from ...
Yuxun Guo, Xiangdong Ji, Kyle Shiells
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On sum rules for double and triple parton distribution functions and Pythia’s model of multiple parton interactions

Journal of High Energy Physics, 2023
Multi-parton distributions in a proton, the nonperturbative quantities needed to make predictions for multiple scattering rates, are poorly constrained from theory and data and must be modelled.
Oleh Fedkevych, Jonathan R. Gaunt
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Fitting a deep generative hadronization model

Journal of High Energy Physics, 2023
Hadronization is a critical step in the simulation of high-energy particle and nuclear physics experiments. As there is no first principles understanding of this process, physically-inspired hadronization models have a large number of parameters that are
Jay Chan, Xiangyang Ju, Adam Kania, Benjamin Nachman, Vishnu Sangli, Andrzej Siódmok   +5 more
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Valence and sea parton correlations in double parton scattering from data

Journal of High Energy Physics, 2023
The effective cross section of double parton scattering in proton collisions has been measured by many experiments with rather different results. Motivated by this fact, we assumed that the parton correlations in the transverse plane are different ...
Edgar Huayra, João Vitor C. Lovato, Emmanuel G. de Oliveira   +2 more
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Strange-quark mass effects in the B s meson’s light-cone distribution amplitude

Journal of High Energy Physics, 2023
We investigate the differences between the light-cone distribution amplitudes (LCDAs) of B s mesons and B q mesons (with q = u, d) induced by a non-vanishing strange-quark mass m s ≠ 0 (compared to m q ≃ 0).
Thorsten Feldmann, Philip Lüghausen, Nicolas Seitz   +2 more
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PROPERTIES OF HEAVY B HADRONS [PDF]

International Journal of Modern Physics A, 2009
We review recent measurements of heavy B hadron states including masses and lifetimes of the [Formula: see text] meson as well as excited B states [Formula: see text]. We discuss properties of the [Formula: see text] meson such as lifetime, lifetime difference ΔΓs/Γs and CP violation in [Formula: see text] decays. We also summarize new measurements of
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Study of b-hadron properties with semileptonic b-hadron decays [PDF]

Proceedings of 40th International Conference on High Energy physics — PoS(ICHEP2020), 2021
With large branching fractions and controllable theoretical uncertainties, semileptonic $B$ decays are excellent tools for measuring $b$-hadron properties as well as testing QCD calculations. The large samples of $B_s^0$ mesons and $b$-baryons uniquely available at LHCb extend the experimental reach into this sector, allowing differential decay rates ...
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