Polarization and cross section of midrapidity J/$\psi$ production in $p+p$ collisions at $\sqrt {s}$ = 510 GeV - INSPIRE

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Polarization and cross section of midrapidity J/ $\psi$ production in $p+p$ collisions at $\sqrt {s}$ = 510 GeV

PHENIX

Collaboration

•

U. Acharya
(
- Georgia State U.
)

May 28, 2020

13 pages

Published in:

Phys.Rev.D 102 (2020) 7, 072008

Published: Oct 29, 2020

e-Print:

2005.14273 [hep-ex]

DOI:

10.1103/PhysRevD.102.072008

Experiments:

BNL-RHIC-PHENIX

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Abstract: (APS)

The PHENIX experiment has measured the spin alignment for inclusive J/ψ→e+e- decays in proton-proton collisions at s=510 GeV at midrapidity. The angular distributions have been measured in three different polarization frames, and the three decay angular coefficients have been extracted in a full two-dimensional analysis. Previously, PHENIX saw large longitudinal net polarization at forward rapidity at the same collision energy. This analysis at midrapidity, complementary to the previous PHENIX results, sees no sizable polarization in the measured transverse momentum range of 0.0

Note:

360 authors from 69 institutions, 13 pages, 15 figures, 1 table, 2013 data. v1 is version accepted for publication in Physical Review D. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html

Particle Physics Experiments
spin: alignment
p p: scattering
J/psi(3100): leptonic decay
electron: pair production
dimension: 1
dimension: 2
J/psi(3100): polarization
PHENIX
differential cross section: measured

References(43)

Figures(17)

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