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Alizadehvandchali, N.; Alkin, A.; Alocco, G.; Arsene, I. C.; Baruffaldi, F.; Beattie, C.; Belikov, I.; Boca, G.; Boldizsár, L.; Caron, R.; Castillo Castellanos, J.; Chandra, S.; Chizzali, E. S.; Ciupek, M. R.; Contreras, J. G.; Crochet, P.; Dash, S.; De Falco, A.; Di Bari, D.; Dmitrieva, U.; Ersdal, M. R.; Fan, F.; Fernández Téllez, A.; Gagliardi, M.; Glässel, P.; Grecka, E.; Grigoriev, V.; Gupta, A.; Hamdi, A.; Herrera Corral, G.; Herrmann, F.; Heybeck, B.; Hippolyte, B.; Iddon, J. P.; Isidori, T.; Ivanov, M.; Jadlovska, S.; Jowett, J. M.; Kaewjai, J.; Karczmarczyk, P.; Khan, S.; Kim, J.; Kirsch, S.; Kiselev, S.; Kluge, A.; Knospe, A. G.; Kumaoka, T.; Kurepin, A.; Lim, S. H.; Lindner, A.; Lippmann, C.; Mager, M.; Masera, M.; Mhlanga, S.; Muccifora, V.; Murakami, H.; Nattrass, C.; Nyanin, A.; Oppedisano, C.; Padhan, S.; Perrin, S.; Pliquett, F.; Pradhan, K. K.; Prasad, S. K.; Prino, F.; Qiu, S.; Rakotozafindrabe, A.; Reckziegel, C.; Reygers, K.; Riabov, V.; Ricci, R.; Russo, R.; Sas, M. P.; Schicker, R.; Schotter, R.; Schukraft, J.; Shaba, T. J.; Shangaraev, A.; Sharma, B.; Sharma, D.; Shatat, A.; Shirinkin, S.; Snellings, R. M.; Soramel, F.; Staa, J.; Stratmann, P.; Sukhanov, M.; Sumowidagdo, S.; Tarzila, M. G.; Tkacik, M.; Torres Ramos, A. G.; Trzaska, W. H.; Uras, A.; Usai, G. L.; Vergara Limón, S.; Voloshin, K.; Wang, D.; Wenzel, S. C.; Závada, P.; Zurlo, N.
Physical review. C, 09/2023, Letnik: 108, Številka: 3Journal Article
The production of electrons from beauty-hadron decays was measured at midrapidity in proton-proton ($pp$) and central Pb-Pb collisions at center-of-mass energy per nucleon-nucleon pair $\sqrt{s_{NN}}$ = 5.02 TeV, using the ALICE detector at the LHC. The cross section measured in p p collisions in the transverse momentum interval $2$ < $p_T$ < $26$ $\mathrm{GeV}$ / $c$ was compared with models based on perturbative quantum chromodynamics calculations. The yield in the 10% most central Pb-Pb collisions, measured in the interval $2$ < $p_T$ < $26$ $\mathrm{GeV}$ / $c$, was used to compute the nuclear modification factor $R_{AA}$, extrapolating the $pp$ reference cross section to $p_T$ larger than 8 $\mathrm{GeV}$ / $c$. The measured $R_{AA}$ shows significant suppression of the yield of electrons from beauty-hadron decays at high $p_T$ and does not show a significant dependence above 8 $\mathrm{GeV}$ / $c$ within uncertainties. The results are described by several theoretical models based on different implementations of the interaction of heavy quarks with a quark-gluon plasma, which predict a smaller energy loss for beauty quarks compared to light and charm quarks.
