Measurement of the production cross section of prompt Ξc<SUP>0</SUP> baryons at midrapidity in pp collisions at √s=5.02 TeV

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초록

The transverse momentum (p(T)) differential cross section of the charm-strange baryon Xi(0)(c) is measured at midrapidity (vertical bar y vertical bar < 0.5) via its semileptonic decay into e(+)Xi(-)nu(e) in pp collisions at root s = 5.02TeV with the ALICE detector at the LHC. The ratio of the p(T)-differential Xi(0)(c)-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 pT-integrated cross section of prompt Xi(0)(c)-baryon production at midrapidity is also reported, which is used to calculate the baryon-to-meson ratio Xi(0)(c)/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.

키워드

Heavy Ion ExperimentsPB COLLISIONSHEAVY
제목
Measurement of the production cross section of prompt Ξc<SUP>0</SUP> baryons at midrapidity in pp collisions at √s=5.02 TeV
저자
Acharya, S.Adamova, D.Adler, A.Adolfsson, J.Aglieri Rinella, G.Agnello, M.Agrawal, N.Ahammed, Z.Ahmad, S.Ahn, S. U.Ahuja, I.Akbar, Z.Akindinov, A.Al-Turany, M.Alam, S. N.Aleksandrov, D.Alessandro, B.Alfanda, H. M.Alfaro Molina, R.Ali, B.Ali, Y.Alici, A.Alizadehvandchali, N.Alkin, A.Alme, J.Alt, T.Altenkamper, L.Altsybeev, I.Anaam, M. N.Andrei, C.Andreou, D.Andronic, A.Angeletti, M.Anguelov, V.Antinori, F.Antonioli, P.Anuj, C.Apadula, N.Aphecetche, L.Appelshauser, H.Arcelli, S.Arnaldi, R.Arsene, I. C.Arslandok, M.Augustinus, A.Averbeck, R.Aziz, S.Azmi, M. D.Badala, A.Baek, Y. W.Bai, X.Bailhache, R.Bailung, Y.Bala, R.Balbino, A.Baldisseri, A.Balis, B.Ball, M.Banerjee, D.Barbera, R.Barioglio, L.Barlou, M.Barnafoldi, G. G.Barnby, L. S.Barret, V.Bartels, C.Barth, K.Bartsch, E.Baruffaldi, F.Bastid, N.Basu, S.Batigne, G.Batyunya, B.Bauri, D.Bazo Alba, J. L.Bearden, I. G.Beattie, C.Belikov, I.Bell Hechavarria, A. D. 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DOI
10.1007/JHEP10(2021)159
발행일
2021-10-19
유형
Article
저널명
Journal of High Energy Physics
10