Angular decay coefficients of J/psi mesons at forward rapidity from p plus p collisions at root s=510 GeV
- Title
- Angular decay coefficients of J/psi mesons at forward rapidity from p plus p collisions at root s=510 GeV
- Author
- 김용균
- Keywords
- QCD CORRECTIONS; POLARIZATION; PSI
- Issue Date
- 2017-05
- Publisher
- AMER PHYSICAL SOC
- Citation
- PHYSICAL REVIEW D, v. 95, no. 9, Article no. 092003
- Abstract
- We report the first measurement of the full angular distribution for inclusive J/psi -> mu(+)mu(-) decays in p + p collisions at root s = 510 GeV. The measurements are made for J/psi transverse momentum 2 < p(T) < 10 GeV /c and rapidity 1.2 < y < 2.2 in the Helicity, Collins-Soper, and Gottfried-Jackson reference frames. In all frames the polar coefficient lambda theta is strongly negative at low p(T) and becomes close to zero at high p(T), while the azimuthal coefficient lambda phi is close to zero at low p(T), and becomes slightly negative at higher p(T). The frame-independent coefficient lambda is strongly negative at all p(T) in all frames. The data are compared to the theoretical predictions provided by nonrelativistic quantum chromodynamics models.
- URI
- https://journals.aps.org/prd/abstract/10.1103/PhysRevD.95.092003https://repository.hanyang.ac.kr/handle/20.500.11754/114083
- ISSN
- 2470-0010; 2470-0029
- DOI
- 10.1103/PhysRevD.95.092003
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > NUCLEAR ENGINEERING(원자력공학과) > Articles
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