Cross section and transverse single-spin asymmetry of η mesons in p.sup.↑./sup.+ p collisions at √s=200 GeV at forward rapidity

Adare, A.; Aidala, C.; Ajitanand, N.N.; Růžička, Pavel; Tomášek, Lukáš; Vrba, Václav

doi:https://dx.doi.org/10.1103/PhysRevD.90.072008

Number of the records: 1

Cross section and transverse single-spin asymmetry of η mesons in p.sup.↑./sup.+ p collisions at √s=200 GeV at forward rapidity

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SYSNO ASEP	0522681
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Cross section and transverse single-spin asymmetry of η mesons in p^↑+ p collisions at √s=200 GeV at forward rapidity
Author(s)	Adare, A. (US) Aidala, C. (US) Ajitanand, N.N. (US) Růžička, Pavel (FZU-D) Tomášek, Lukáš (FZU-D)_{RID, ORCID} Vrba, Václav (FZU-D)_{RID, ORCID}
Number of authors	484
Article number	072008
Source Title	Physical Review D. - : American Physical Society - ISSN 2470-0010 Roč. 90, č. 7 (2014), s. 1-15
Number of pages	15 s.
Language	eng - English
Country	US - United States
Keywords	Brookhaven RHIC Coll ; PHENIX ; p p --> eta anything ; eta --> 2 photon ; 200 GeV-cms ; experimental results
Subject RIV	BF - Elementary Particles and High Energy Physics
OECD category	Particles and field physics
Method of publishing	Limited access
Institutional support	FZU-D - RVO:68378271
UT WOS	000344022100001
EID SCOPUS	84908239582
DOI	10.1103/PhysRevD.90.072008
Annotation	We present a measurement of the cross section and transverse single-spin asymmetry (AN) for η mesons at large pseudorapidity from s=200 GeV p↑+p collisions. The measured cross section for 0.5<pT<5.0 GeV/c and 3.0<\|η\|<3.8 is well described by a next-to-leading-order perturbative-quantum-chromodynamics calculation. The asymmetries AN have been measured as a function of Feynman-x (xF) from 0.2<\|xF\|<0.7, as well as transverse momentum (pT) from 1.0<pT<4.5 GeV/c. The asymmetry averaged over positive xF is ⟨AN⟩=0.061±0.014. The results are consistent with prior transverse single-spin measurements of forward η and π0 mesons at various energies in overlapping xF ranges. Comparison of different particle species can help to determine the origin of the large observed asymmetries in p↑+p collisions.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2020
Electronic address	https://doi.org/10.1103/physrevd.90.072008

Number of the records: 1