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Akbar, Z.; Al-Turany, M.; Alam, S. N.; Aleksandrov, D.; Altenkamper, L.; Anguelov, V.; Anuj, C.; Ball, M.; Barioglio, L.; Barlou, M.; Barnaföldi, G. G.; Basu, S.; Bazo Alba, J. L.; Betev, L.; Blume, C.; Boca, G.; Bond, P. M.; Braun-Munzinger, P.; Buckland, M. D.; Caliva, A.; Ceballos Sanchez, C.; Chibante Barroso, V.; Chujo, T.; Cortese, P.; Cunqueiro, L.; Danu, A.; Das, P.; Das, P.; Deja, K. R.; Deng, W.; Di Bari, D.; Espagnon, B.; Faivre, J.; Feofilov, G.; Fernández Téllez, A.; Frajna, E.; Furs, A.; Garcia-Solis, E.; Gianotti, P.; Guilbaud, M.; Halimoglu, G.; Hasenbichler, J. A.; Hetland, K. F.; Honermann, J.; Hong, G. H.; Iddon, J. P.; Jevons, O.; Jowett, J. M.; Jusko, A.; Kalweit, A.; Keidel, R.; Kharlov, Y.; Kim, B.; Kleiner, M.; Kuryakin, A.; Langoy, R.; Lemmon, R. C.; Masoni, A.; Mihaylov, D. L.; Muhuri, S.; Neagu, A.; Nellen, L.; Neskovic, G.; Nikulin, S.; Novitzky, N.; Pachmayer, Y.; Pagano, D.; Parkkila, J. E.; Puccio, M.; Rath, R.; Renfordt, R.; Røed, K.; Rossi, A.; Russek, P. G.; Sahoo, S.; Sahu, D.; Sarti, V. M.; Schmidt, N. V.; Sevcenco, A.; Shahoyan, R.; Sharma, A.; Sharma, N.; Silva, T. F.; Soncco, C.; Stiefelmaier, S. F.; Suaide, A. A. P.; Szarka, I.; Takahashi, J.; Tang, Z.; Tripathy, S.; Trzaska, W. H.; Trzcinski, T. P.; van der Kolk, N.; Verweij, M.; Vislavicius, V.; Voloshin, K.; Vorobyev, I.; Weber, M.; Wegrzynek, A.; Zhou, D.
The journal of high energy physics, 10/2021, Letnik: 2021, Številka: 10Journal Article
A bstract The transverse momentum ( p T ) differential cross section of the charm-strange baryon Ξ c 0 is measured at midrapidity (| y | < 0.5) via its semileptonic decay into e + Ξ − ν e in pp collisions at s = 5 . 02 TeV with the ALICE detector at the LHC. The ratio of the p T -differential Ξ c 0 -baryon and D 0 -meson production cross sections is also reported. The measurements are compared with simulations with different tunes of the PYTHIA 8 event generator, with predictions from a statistical hadronisation model (SHM) with a largely augmented set of charm-baryon states beyond the current lists of the Particle Data Group, and with models including hadronisation via quark coalescence. The p T -integrated cross section of prompt Ξ c 0 -baryon production at midrapidity is also reported, which is used to calculate the baryon-to-meson ratio Ξ c 0 / D 0 = 0 . 20 ± 0 . 04 stat . − 0.07 + 0.08 (syst . ). These results provide an additional indication of a modification of the charm fragmentation from e + e − and e − p collisions to pp collisions.
