Azimuthal anisotropy of charged particles with transverse momentum up to 100 GeV in PbPb collisions at sqrt(s[NN]) = 5.02 TeV
A.M. Sirunyan
,
M. Besançon
(1)
,
F. Couderc
(1)
,
M. Dejardin
(1)
,
D. Denegri
(1)
,
B. Fabbro
(1)
,
J.L. Faure
(1)
,
C. Favaro
(1)
,
F. Ferri
(1)
,
S. Ganjour
(1)
,
S. Ghosh
(1)
,
A. Givernaud
(1)
,
P. Gras
(1)
,
G. Hamel De Monchenault
(1)
,
P. Jarry
(1)
,
I. Kucher
(1)
,
E. Locci
(1)
,
M. Machet
(1)
,
J. Malcles
(1)
,
J. Rander
(1)
,
A. Rosowsky
(1)
,
M. Titov
(1)
,
A. Abdulsalam
(2)
,
I. Antropov
(2)
,
S. Baffioni
(2)
,
F. Beaudette
(2)
,
P. Busson
(2)
,
L. Cadamuro
(2)
,
E. Chapon
(2)
,
C. Charlot
(2)
,
O. Davignon
(2)
,
R. Granier De Cassagnac
(2)
,
M. Jo
(2)
,
S. Lisniak
(2)
,
P. Mine
(2)
,
M. Nguyen
(2)
,
C. Ochando
(2)
,
G. Ortona
(2)
,
P. Paganini
(2)
,
P. Pigard
(2)
,
S. Regnard
(2)
,
R. Salerno
(2)
,
Y. Sirois
(2)
,
A.G. Stahl Leiton
(2)
,
T. Strebler
(2)
,
Y. Yilmaz
(2)
,
A. Zabi
(2)
,
A. Zghiche
(1)
,
J.-L. Agram
(3)
,
J. Andrea
(3)
,
A. Aubin
(3)
,
D. Bloch
(3)
,
J.-M. Brom
(3)
,
M. Buttignol
(3)
,
E.C. Chabert
(3)
,
N. Chanon
(3)
,
C. Collard
(3)
,
E. Conte
(3)
,
X. Coubez
(3)
,
J.-C. Fontaine
(3)
,
D. Gele
(3)
,
U. Goerlach
(3)
,
A.-C. Le Bihan
(3)
,
P. Van Hove
(3)
,
S. Gadrat
(4)
,
S. Beauceron
(5)
,
C. Bernet
(5)
,
G. Boudoul
(5)
,
C.A. Carrillo Montoya
(5)
,
R. Chierici
(5)
,
D. Contardo
(5)
,
B. Courbon
(5)
,
P. Depasse
(5)
,
H. El Mamouni
(5)
,
J. Fay
(5)
,
S. Gascon
(5)
,
M. Gouzevitch
(5)
,
G. Grenier
(5)
,
B. Ille
(5)
,
Fabienne Lagarde
(5)
,
I.B. Laktineh
(5)
,
M. Lethuillier
(5)
,
L. Mirabito
(5)
,
A.L. Pequegnot
(5)
,
S. Perries
(5)
,
A. Popov
,
D. Sabes
(5)
,
V. Sordini
(5)
,
M. Vander Donckt
(5)
,
P. Verdier
(5)
,
S. Viret
(5)
A.M. Sirunyan
- Function : Author
S. Baffioni
- Function : Author
- PersonId : 20331
- IdHAL : stephanie-barrillon
- ORCID : 0000-0002-7075-1673
P. Busson
- Function : Author
- PersonId : 741166
- IdHAL : phbusson
- ORCID : 0000-0001-6027-4511
- IdRef : 033562466
R. Granier De Cassagnac
- Function : Author
- PersonId : 739189
- IdHAL : raphgrandecass
- ORCID : 0000-0002-1275-7292
- IdRef : 132136651
P. Paganini
- Function : Author
- PersonId : 739173
- IdHAL : pascal-paganini
- ORCID : 0000-0001-9580-683X
- IdRef : 183219406
J.-L. Agram
- Function : Author
- PersonId : 1147753
- IdHAL : j-l-agram
- ORCID : 0000-0001-7476-0158
- IdRef : 090333748
N. Chanon
- Function : Author
- PersonId : 742432
- IdHAL : nicolas-chanon
- ORCID : 0000-0002-2939-5646
- IdRef : 235525227
C. Collard
- Function : Author
- PersonId : 753602
- IdHAL : caroline-collard
- ORCID : 0000-0002-5230-8387
- IdRef : 223465992
E. Conte
- Function : Author
- PersonId : 755000
- IdHAL : eric-conte
- ORCID : 0000-0003-3154-3123
- IdRef : 122530209
M. Gouzevitch
- Function : Author
- PersonId : 741096
- IdHAL : maxime-gouzevitch
- ORCID : 0000-0002-5524-880X
- IdRef : 13627160X
M. Lethuillier
- Function : Author
- PersonId : 740178
- IdHAL : morgan-lethuillier
- ORCID : 0000-0001-6185-2045
- IdRef : 090177835
A. Popov
- Function : Author
V. Sordini
- Function : Author
- PersonId : 739810
- IdHAL : viola-sordini
- ORCID : 0000-0003-0885-824X
- IdRef : 128184035
S. Viret
- Function : Author
- PersonId : 1093632
- IdHAL : seb-viret
- ORCID : 0000-0002-1935-623X
Abstract
The Fourier coefficients v[2] and v[3] characterizing the anisotropy of the azimuthal distribution of charged particles produced in PbPb collisions at sqrt(s[NN])= 5.02 TeV are measured with data collected by the CMS experiment. The measurements cover a broad transverse momentum range, pt= 1-100 GeV. The analysis focuses on pt > 10 GeV range, where anisotropic azimuthal distributions should reflect the path-length dependence of parton energy loss in the created medium. Results are presented in several bins of PbPb collision centrality, spanning the 60x% most central events. The v[2] coefficient is measured with the scalar product and the multiparticle cumulant methods, which have different sensitivities to the initial-state fluctuations. The values of both methods remain positive up to pt ~ 70 GeV, in all examined centrality classes. The v[3] coefficient, only measured with the scalar product method, tends to zero for pt >~ 20 GeV. Comparisons between theoretical calculations and data provide new constraints on the path-length dependence of parton energy loss in heavy ion collisions and highlight the importance of the initial-state fluctuations.
Origin : Publisher files allowed on an open archive
Loading...