Angular decay coefficients of J /ψ mesons at forward rapidity from p+p collisions at s =510 GeV
(2017) In Physical Review D - Particles, Fields, Gravitation and Cosmology 95(9).- Abstract
We report the first measurement of the full angular distribution for inclusive J/ψ→μ+μ- decays in p+p collisions at s=510 GeV. The measurements are made for J/ψ transverse momentum 2<pT<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 λθ is strongly negative at low pT and becomes close to zero at high pT, while the azimuthal coefficient λφ is close to zero at low pT, and becomes slightly negative at higher pT. The frame-independent coefficient λ is strongly negative at all pT in all frames. The data are compared to the theoretical predictions provided by nonrelativistic quantum chromodynamics models.
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- author
- author collaboration
- organization
- publishing date
- 2017-05-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review D - Particles, Fields, Gravitation and Cosmology
- volume
- 95
- issue
- 9
- article number
- 092003
- publisher
- American Physical Society
- external identifiers
-
- wos:000401231900001
- scopus:85020079986
- ISSN
- 2470-0010
- DOI
- 10.1103/PhysRevD.95.092003
- language
- English
- LU publication?
- yes
- id
- 41cb24e3-ccb6-4d5a-9788-13c180b99f1c
- date added to LUP
- 2017-06-29 08:30:08
- date last changed
- 2023-04-07 18:28:35
@article{41cb24e3-ccb6-4d5a-9788-13c180b99f1c, abstract = {{<p>We report the first measurement of the full angular distribution for inclusive J/ψ→μ+μ- decays in p+p collisions at s=510 GeV. The measurements are made for J/ψ transverse momentum 2<pT<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 λθ is strongly negative at low pT and becomes close to zero at high pT, while the azimuthal coefficient λφ is close to zero at low pT, and becomes slightly negative at higher pT. The frame-independent coefficient λ is strongly negative at all pT in all frames. The data are compared to the theoretical predictions provided by nonrelativistic quantum chromodynamics models.</p>}}, author = {{Adare, A and Aidala, C. and Ajitanand, N. N. and Akiba, Y. and Akimoto, R. and Alfred, M. and Andrieux, V. and Aoki, K. and Apadula, N and Aramaki, Y and Asano, H. and Atomssa, E. T. and Awes, T. C. and Ayuso, Carmen and Azmoun, B. and Babintsev, V. and Bai, M and Bandara, N. S. and Bannier, B and Barish, K N and Bathe, S and Bazilevsky, A and Beaumier, M. and Beckman, S. and Belmont, R and Berdnikov, A and Berdnikov, Y. and Black, D and Blau, D. S. and Boer, M. and Bok, J S and Bownes, E. K. and Boyle, K and Brooks, M L and Bryslawskyj, J. and Buesching, H and Bumazhnov, V. and Butler, Christopher C. and Campbell, S. and Canoa Roman, V. and Cervantes, R. and Chen, C. H. and Chi, C Y and Chiu, M and Choi, I J and Choi, J B and Chujo, T. and Citron, Z. and Oskarsson, A. and Silvermyr, D.}}, issn = {{2470-0010}}, language = {{eng}}, month = {{05}}, number = {{9}}, publisher = {{American Physical Society}}, series = {{Physical Review D - Particles, Fields, Gravitation and Cosmology}}, title = {{Angular decay coefficients of J /ψ mesons at forward rapidity from p+p collisions at s =510 GeV}}, url = {{http://dx.doi.org/10.1103/PhysRevD.95.092003}}, doi = {{10.1103/PhysRevD.95.092003}}, volume = {{95}}, year = {{2017}}, }