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Bottom quark energy loss and hadronization with B+ and $$ {\textrm{B}}_{\textrm{s}}^0 $$ nuclear modification factors using pp and PbPb collisions at $$ \sqrt{s_{\textrm{NN}}} $$ = 5.02 TeV

Articolo
Data di Pubblicazione:
2025
Abstract:
The production cross sections of Bs0 and B+ mesons are reported in proton-proton (pp) collisions recorded by the CMS experiment at the CERN LHC with a center-of-mass energy of 5.02 TeV. The data sample corresponds to an integrated luminosity of 302 pb−1. The cross sections are based on measurements of the Bs0→ J/ψ(μ+μ−)ϕ(1020)(K+K−) and B+→ J/ψ(μ+μ−)K+ decay channels. Results are presented in the transverse momentum (pT) range 7–50 GeV/c and the rapidity interval |y| < 2.4 for the B mesons. The measured pT-differential cross sections of B+ and Bs0 in pp collisions are well described by fixed-order plus next-to-leading logarithm perturbative quantum chromodynamics calculations. Using previous PbPb collision measurements at the same nucleon-nucleon center-of-mass energy, the nuclear modification factors, RAA, of the B mesons are determined. For pT> 10 GeV/c, both mesons are found to be suppressed in PbPb collisions (with RAA values significantly below unity), with less suppression observed for the Bs0 mesons. In this pT range, the RAA values for the B+ mesons are consistent with those for inclusive charged hadrons and D0 mesons. Below 10 GeV/c, both B+ and Bs0 are found to be less suppressed than either inclusive charged hadrons or D0 mesons, with the Bs0RAA value consistent with unity. The RAA values found for the B+ and Bs0 are compared to theoretical calculations, providing constraints on the mechanism of bottom quark energy loss and hadronization in the quark-gluon plasma, the hot and dense matter created in ultrarelativistic heavy ion collisions.
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
B Physics; Heavy Ion Experiments; Quark Gluon Plasma
Elenco autori:
Null, Null; Hayrapetyan, A.; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Hussain, P. S.; Jeitler, M.; Krammer, N.; Li, A.; Liko, D.; Mikulec, I.; Schieck, J.; Schöfbeck, R.; Schwarz, D.; Sonawane, M.; Templ, S.; Waltenberger, W.; Wulz, C. -E.; Darwish, M. R.; Janssen, T.; Van Mechelen, P.; Breugelmans, N.; D'Hondt, J.; Dansana, S.; De Moor, A.; Delcourt, M.; Heyen, F.; Lowette, S.; Makarenko, I.; Müller, D.; Tavernier, S.; Tytgat, M.; Van Onsem, G. P.; Van Putte, S.; Vannerom, D.; Bilin, B.; Clerbaux, B.; Das, A. K.; De Lentdecker, G.; Evard, H.; Favart, L.; Gianneios, P.; Jaramillo, J.; Khalilzadeh, A.; Khan, F. A.; Lee, K.; Mahdavikhorrami, M.; Malara, A.; Paredes, S.; Shahzad, M. A.; Thomas, L.; Vanden Bemden, M.; Vander Velde, C.; Vanlaer, P.; De Coen, M.; Dobur, D.; Gokbulut, G.; Hong, Y.; Knolle, J.; Lambrecht, L.; Marckx, D.; Mota Amarilo, K.; Samalan, A.; Skovpen, K.; Van Den Bossche, N.; Van Der Linden, J.; Wezenbeek, L.; Benecke, A.; Bethani, A.; Bruno, G.; Caputo, C.; De Favereau De Jeneret, J.; Delaere, C.; Donertas, I. S.; Giammanco, A.; Guzel, A. O.; Jain, Sa.; Lemaitre, V.; Lidrych, J.; Mastrapasqua, P.; Tran, T. T.; Wertz, S.; Alves, G. A.; Alves Gallo Pereira, M.; Coelho, E.; Correia Silva, G.; Hensel, C.; Menezes De Oliveira, T.; Moraes, A.; Rebello Teles, P.; Soeiro, M.; Vilela Pereira, A.; Aldá Júnior, W. L.; Barroso Ferreira Filho, M.; Brandao Malbouisson, H.; Carvalho, W.; Chinellato, J.; Da Costa, E. M.; Da Silveira, G. G.; De Jesus Damiao, D.; Fonseca De Souza, S.; Gomes De Souza, R.; Macedo, M.; Martins, J.; Mora Herrera, C.; Mundim, L.; Nogima, H.; Pinheiro, J. P.; Santoro, A.; Sznajder, A.; Thiel, M.; Bernardes, C. A.; Calligaris, L.; Fernandez Perez Tomei, T. R.; Gregores, E. M.; Maietto Silverio, I.; Mercadante, P. G.; Novaes, S. F.; Orzari, B.; Padula, Sandra S.; Aleksandrov, A.; Antchev, G.; Hadjiiska, R.; Iaydjiev, P.; Misheva, M.; Shopova, M.; Sultanov, G.; Dimitrov, A.; Litov, L.; Pavlov, B.; Petkov, P.; Petrov, A.; Shumka, E.; Keshri, S.; Thakur, S.; Cheng, T.; Javaid, T.; Yuan, L.; Hu, Z.; Liang, Z.; Liu, J.; Yi, K.; Chen, G. M.; Chen, H. S.; Chen, M.; Iemmi, F.; Jiang, C. H.; Kapoor, A.; Liao, H.; Liu, Z. -A.; Sharma, R.; Song, J. N.; Tao, J.; Wang, C.; Wang, J.; Wang, Z.; Zhang, H.; Zhao, J.; Agapitos, A.; Ban, Y.; Deng, S.; Guo, B.; Jiang, C.; Levin, A.; Li, C.; Li, Q.; Mao, Y.; Qian, S.; Qian, S. J.; Qin, X.; Sun, X.; Wang, D.; Yang, H.; Zhang, L.; Zhao, Y.; Zhou, C.; Yang, S.; You, Z.; Jaffel, K.; Lu, N.; Bauer, G.; Li, B.; Zhang, J.; Gao, X.; Lin, Z.; Lu, C.; Xiao, M.; Avila, C.; Barbosa Trujillo, D. A.; Cabrera, A.; Florez, C.; Fraga, J.; Reyes Vega, J. A.; Ramirez, F.; Rendón, C.; Rodriguez, M.; Ruales Barbosa, A. A.; Ruiz Alvarez, J. D.; Giljanovic, D.; Godinovic, N.; Lelas, D.; Sculac, A.; Kovac, M.; Petkovic, A.; Sculac, T.; Bargassa, P.; Brigljevic, V.; Chitroda, B. K.; Ferencek, D.; Jakovcic, K.; Mishra, S.; Starodumov, A.; Susa, T.; Attikis, A.; Christoforou, K.; Hadjiagapiou, A.; Leonidou, C.; Mousa, J.; Nicolaou, C.; Paizanos, L.; Ptochos, F.; Razis, P. A.; Rykaczewski, H.; Saka, H.; Stepennov, A.; Finger, M.; Finger, M.; Kveton, A.; Carrera Jarrin, E.; Assran, Y.; El-mahdy, B.; Elgammal, S.; Mahmoud, M. A.; Mohammed, Y.; Ehataht, K.; Kadastik, M.; Lange, T.; Nandan, S.; Nielsen, C.; Pata, J.; Raidal, M.; Tani, L.; Veelken, C.; Kirschenmann, H.; Osterberg, K.; Voutilainen, M.; Bharthuar, S.; Bin Norjoharuddeen, N.; Brücken, E.; Garcia, F.; Inkaew, P.; Kallonen, K. T. S.; Lampén, T.; Lassila-Perini, K.; Lehti, S.; Lindén, T.; Martikainen, L.; Myllymäki, M.; Rantanen, M. M.; Siikonen, H.; Tuominiemi, J.; Luukka, P.; Petrow, H.; Besancon, M.; Couderc, F.; Dejardin, M.; Denegri, D.; Faure, J. L.; Ferri, F.; Ganjour, S.; Gras, P.; Hamel De Monchenault, G.; Kumar, M.; Lohezic, V.; Malcles, J.; Orlandi, F.; Portales, L.; Rosowsky, A.; Sahin, M. Ö.; Savoy-Navarro, A.; Simkin
Autori di Ateneo:
AIMÈ CHIARA
MONTAGNA PAOLO MARIA
RICCARDI CRISTINA
SALVINI PAOLA
VAI ILARIA
VITULO PAOLO
Link alla scheda completa:
https://iris.unipv.it/handle/11571/1551798
Pubblicato in:
JOURNAL OF HIGH ENERGY PHYSICS
Journal
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URL

https://link.springer.com/article/10.1007/JHEP02(2025)195
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