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001-es BibID:	BIBFORM119343
035-os BibID:	(Scopus)85065215476 (WOS)000464740700003
Első szerző:	Aidala, C. A.
Cím:	Measurements of [mu][mu] pairs from open heavy flavor and Drell-Yan in p + p collisions at root{s} = 200 GeV / C. Aidala, PHENIX Collaboration
Dátum:	2019
ISSN:	2470-0010 2470-0029
Megjegyzések:	PHENIX reports differential cross sections of mu mu pairs from semileptonic heavy-flavor decays and the Drell-Yan production mechanism measured in p + p collisions at root s = 200 GeV at forward and backward rapidity (1.2 < vertical bar eta vertical bar < 2.2). The mu mu pairs from c (c) over bar, b (b) over bar, and Drell-Yan are separated using a template fit to unlike- and like-sign muon pair spectra in mass and p(T). The azimuthal opening angle correlation between the muons from c (c ) over bar and b (b) over bar decays and the pair-p(T) distributions are compared to distributions generated using PYTHIA and POWHEG models, which both include next-to-leading order processes. The measured distributions for pairs from a are consistent with PYTHIA calculations. The c (c) over bar data present narrower azimuthal correlations and softer p(T) distributions compared to distributions generated from POWHEG. The b (b ) over bar data are well described by both models. The extrapolated total cross section for bottom production is 3.75 +/- 0.24(stat) +/-(0.35)(0.50) (syst) +/- 0.45(global) [mu b], which is consistent with previous measurements at the Relativistic Heavy Ion Collider in the same system at the same collision energy and is approximately a factor of 2 higher than the central value calculated with theoretical models. The measured Drell-Yan cross section is in good agreement with next-to-leading-order quantum-chromodynamics calculations.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk PRODUCTION CROSS-SECTION MESON PRODUCTION P(P)OVER-BAR COLLISIONS BEAUTY PRODUCTION QUARK PRODUCTION ROOT-S TEV DECAYS
Megjelenés:	Physical Review D. - 99 : 7 (2019), p. 1-41. -
További szerzők:	Lovász K. (fizikus) Majoros Tamás (1991-) (mérnök, informatikus) Sun, Zhiyu Tarnai G. Ujvári Balázs (1977-) (fizikus) PHENIX Collaboration
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