Pregled bibliografske jedinice broj: 754482
$J/\Psi$ polarization in p+p collisions at $\sqrt{; ; s}; ; =$200 GeV in STAR
$J/\Psi$ polarization in p+p collisions at $\sqrt{; ; s}; ; =$200 GeV in STAR // Physics letters. B, 739 (2014), 180-188 doi:10.1016/j.physletb.2014.10.049 (međunarodna recenzija, članak, znanstveni)
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Naslov
$J/\Psi$ polarization in p+p collisions at $\sqrt{; ; s}; ; =$200 GeV in STAR
Autori
Adamczyk, L. ; ... ; Planinić, Mirko ; ... ; Poljak, Nikola. ; ... ; Zyzak, M,
Izvornik
Physics letters. B (0370-2693) 739
(2014);
180-188
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
J/Psi; polarization; STAR
Sažetak
We report on a polarization measurement of inclusive J/ψ m√esons in the di-electron decay channel at mid-rapidity at 2 < pT < 6 GeV/c in p + p collisions at s = 200 GeV. Data were taken with the STAR detector at RHIC. The J/ψ polarization measurement should help to distinguish between the different models of the J/ψ production mechanism since they predict different pT dependences of the J/ψ polarization. In this analysis, J/ψ polarization is studied in the helicity frame. The polarization parameter λθ measured at RHIC becomes smaller towards high pT , indicating more longitudinal J/ψ polarization as pT increases. The result is compared with predictions of presently available models.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
Napomena
STAR Collaboration
POVEZANOST RADA
Ustanove:
Prirodoslovno-matematički fakultet, Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
