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 sqrt(s)_NN=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 to mu+ mu- 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.

Search for Nuclear Modifications of B+ Meson Production in p-Pb Collisions at sqrt(s)_NN = 8.16 TeV

Tornago, M.;Cappati, A.;Amapane, N.;Argiro, S.;Bellan, R.;Bellora, A.;Borca, C.;Costa, M.;Covarelli, R.;Grippo, M.;Kiani, B.;Luongo, F.;Markovic, L.;Mecca, A.;Menzio, L.;Meridiani, P.;Migliore, E.;Mulargia, R.;Obertino, M.  M.;Pacher, L.;Siviero, F.;Sola, V.;Solano, A.;Tarricone, C.;Umoret, G.;Shchelina, K.;Rumerio, P.;Ravera, F.;Salvatico, R.;Vagnerini, A.;
2025-01-01

Abstract

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 sqrt(s)_NN=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 to mu+ mu- 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.
2025
134
111903
1
20
https://journals.aps.org/prl/pdf/10.1103/PhysRevLett.134.111903
LHC, CMS, B meson production
Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Hussain, P. S.; Jeitler, M.;...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/2123273
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