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Adamová, D.; Agnello, M.; Ahammed, Z.; Alocco, G.; Antinori, F.; Basu, S.; Berdnikova, A.; Biernat, J.; Bize, N.; Bluhme, N.; Boi, S.; Bombara, M.; Borissov, A.; Carballo, A. A.; Cheshkov, C.; Cho, S.; Christakoglou, P.; Ciacco, M.; Concas, M.; Cruz-Torres, R.; Dash, S.; Dzalaiova, N.; Eder, T. M.; Fan, W.; Fecchio, P.; Ferrero, C.; Gahlaut, T.; Garcia, J. R. A.; Grigoryan, S.; Guardiano, G. G.; Harris, J. W.; Hippolyte, B.; Horzyk, A.; Inaba, M.; Isakov, A.; Jung, M.; Karavicheva, T.; Khade, S. S.; Khuntia, A.; Konopka, P. J.; Koryciak, S. D.; Kryshen, E.; Kurepin, A.; Larionov, P.; Legrand, I.; Lévai, P.; Lietava, R.; Lindenstruth, V.; Liveraro, G. S. S.; López Torres, E.; Lunardon, M.; Mallick, N.; Mandaglio, G.; Mazzilli, M.; Menchaca-Rocha, A.; Miake, Y.; Modak, A.; Mordasini, C.; Morsch, A.; Mrnjavac, T.; Nania, R.; Nielsen, B. S.; Nikulin, V.; Oleniacz, J.; Oliver, M. H.; Otwinowski, J.; Pachmayer, Y.; Peitzmann, T.; Pikna, M.; Płoskoń, M.; Polichtchouk, B.; Pradhan, K. K.; Reetz, C. A.; Ruggiano, D.; Rustamov, A.; Ryabinkin, E.; Sahu, D.; Sakai, S.; Sambyal, S.; Scheid, H. S.; Schiaua, C.; Schmier, A. R.; Sevcenco, A.; Shimomura, M.; Simeonov, R.; Skorodumovs, G.; Spijkers, R.; Stan, I.; Tang, S.; Tapus, N.; Turrisi, R.; van Veen, C. A.; Vazquez Rueda, O.; Vermunt, L.; Vislavicius, V.; Voloshin, K.; Wu, Y.; Zhang, Y.; Zhang, Z.; Zherebchevskii, V.
Physical review. D, 12/2023, Volume: 108, Issue: 11Journal Article
The production cross sections of D0 and Λ+c hadrons originating from beauty-hadron decays (i.e., nonprompt) were measured for the first time at midrapidity (|y|<0.5) by the ALICE Collaboration in proton-proton collisions at a center-of-mass energy √s=13 TeV. They are described within uncertainties by perturbative QCD calculations employing the fragmentation fractions of beauty quarks to baryons measured at forward rapidity by the LHCb Collaboration. The b¯b production cross section per unit of rapidity at midrapidity, estimated from these measurements, is dσb¯b/dy||y|<0.5=83.1±3.5(stat)±5.4(syst)+12.3−3.2(extrap) μb. The baryon-to-meson ratios are computed to investigate the hadronization mechanism of beauty quarks. The nonprompt Λ+c/D0 production ratio has a similar trend to the one measured for the promptly produced charmed particles and to the p/π+ and Λ/K0S ratios, suggesting a similar baryon-formation mechanism among light, strange, charm, and beauty hadrons. The pT -integrated nonprompt Λ+c/D0 ratio is found to be significantly higher than the one measured in e+e− collisions.
