Identified charged hadron production in p+p collisions at sqrt{s}=200 and 62.4 GeV

0371715 - FZÚ 2013 RIV US eng J - Článek v odborném periodiku
Adare, A. - Afanasiev, S. - Aidala, C. - Kubart, J. - Mašek, L. - Mikeš, P. - Růžička, Pavel - Tomášek, Lukáš - Vrba, Václav … celkem 431 autorů
Identified charged hadron production in p+p collisions at sqrt{s}=200 and 62.4 GeV.
Physical Review. C. Roč. 83, č. 6 (2011), "064903-1"-"064903-29". ISSN 0556-2813
Výzkumný záměr: CEZ:AV0Z10100502
Klíčová slova: transverse momentum: momentum spectrum * hadron: yield * higher-order: 1 * RHIC * PHENIX * quantum chromodynamics: perturbation theory
Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
Impakt faktor: 3.308, rok: 2011
http://link.aps.org/doi/10.1103/PhysRevC.83.064903

Transverse momentum distributions and yields for π±, K±, p and pˉ in p+p collisions at √s=200 and 62.4 GeV at midrapidity are measured by the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC). These data provide important baseline spectra for comparisons with identified particle spectra in heavy ion collisions at RHIC. We present the inverse slope parameter Tinv, mean transverse momentum and yield per unit rapidity dN/dy at each energy, and compare them to other measurements at different sqrt{s} in p+p and p+pˉ collisions. We also present the scaling properties such as mT scaling, xT scaling on the pT spectra between different energies. To discuss the mechanism of the particle production in p+p collisions, the measured spectra are compared to next-to-leading-order or next-to-leading-logarithmic perturbative quantum chromodynamics calculations.
Trvalý link: http://hdl.handle.net/11104/0205169