Search for Nuclear Modifications of 𝐵+ Meson Production in 𝑝-Pb Collisions at √𝑠NN=8.16  TeV

Авторы: Boos E.E., Ershov A.A., A Gribushin, Kaminskiy A., Khein L., Kodolova O.L., Korotkikh V.L., Obraztsov S.V., Petrushanko S.V., Savrin V.I., Snigirev A.M., Vardanyan I., CMS Collaboration
Журнал: Physical Review Letters
Том: 134
Год издания: 2025
Издательство: American Physical Society
Местоположение издательства: United States
Номер статьи: 111903
DOI: 10.1103/PhysRevLett.134.111903
Аннотация: Nuclear medium effects on 𝐵+ meson production are studied using the binary-collision scaled cross section ratio between events of different charged-particle multiplicities from proton-lead collisions. Data, collected by the CMS experiment in 2016 at a nucleon-nucleon center-of-mass energy of √𝑠NN=8.16 TeV, corresponding to an integrated luminosity of 175 nb−1, were used. The scaling factors in the ratio are determined using a novel approach based on the 𝑍→𝜇−⁢𝜇+ cross sections measured in the same events. The scaled ratio for 𝐵+ is consistent with unity for all event multiplicities, putting stringent constraints on nuclear modification for heavy flavor.
Добавил в систему: Петрушанко Сергей Владимирович

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