Imperial College London

Professor Sir Tejinder Singh Virdee FRS

Faculty of Natural SciencesDepartment of Physics

Professor of Physics
 
 
 
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Contact

 

+44 (0)20 7594 7590t.virdee Website

 
 
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Location

 

506Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Sirunyan:2018:10.1103/PhysRevC.97.044912,
author = {Sirunyan, AM and Tumasyan, A and Adam, W and Ambrogi, F and Asilar, E and Bergauer, T and Brandstetter, J and Brondolin, E and Dragicevic, M and Eroe, J and Flechl, M and Friedl, M and Fruehwirth, R and Ghete, VM and Grossmann, J and Hrubec, J and Jeitler, M and Koenig, A and Krammer, N and Kraetschmer, I and Liko, D and Madlener, T and Mikulec, I and Pree, E and Rad, N and Rohringer, H and Schieck, J and Schoefbeck, R and Spanring, M and Spitzbart, D and Waltenberger, W and Wittmann, J and Wulz, C-E and Zarucki, M and Chekhovsky, V and Mossolov, V and Gonzalez, JS and De, Wolf EA and Di, Croce D and Janssen, X and Lauwers, J and Van, Haevermaet H and Van, Mechelen P and Van, Remortel N and Abu, Zeid S and Blekman, F and D'Hondt, J and De, Bruyn I and De, Clercq J and Deroover, K and Flouris, G and Lontkovskyi, D and Lowette, S and Moortgat, S and Moreels, L and Python, Q and Skovpen, K and Tavernier, S and Van, Doninck W and Van, Mulders P and Van, Parijs I and Beghin, D and Brun, H a},
doi = {10.1103/PhysRevC.97.044912},
journal = {PHYSICAL REVIEW C},
title = {Constraints on the chiral magnetic effect using charge-dependent azimuthal correlations in pPb and PbPb collisions at the CERN Large Hadron Collider},
url = {http://dx.doi.org/10.1103/PhysRevC.97.044912},
volume = {97},
year = {2018}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Charge-dependent azimuthal correlations of same- and opposite-sign pairs with respect to the second- and third-order event planes have been measured in pPb collisions at √sNN=8.16TeV and PbPb collisions at 5.02 TeV with the CMS experiment at the LHC. The measurement is motivated by the search for the charge separation phenomenon predicted by the chiral magnetic effect (CME) in heavy ion collisions. Three- and two-particle azimuthal correlators are extracted as functions of the pseudorapidity difference, the transverse momentum (pT) difference, and the pT average of same- and opposite-charge pairs in various event multiplicity ranges. The data suggest that the charge-dependent three-particle correlators with respect to the second- and third-order event planes share a common origin, predominantly arising from charge-dependent two-particle azimuthal correlations coupled with an anisotropic flow. The CME is expected to lead to a v2-independent three-particle correlation when the magnetic field is fixed. Using an event shape engineering technique, upper limits on the v2-independent fraction of the three-particle correlator are estimated to be 13% for pPb and 7% for PbPb collisions at 95% confidence level. The results of this analysis, both the dominance of two-particle correlations as a source of the three-particle results and the similarities seen between PbPb and pPb, provide stringent constraints on the origin of charge-dependent three-particle azimuthal correlations and challenge their interpretation as arising from a chiral magnetic effect in heavy ion collisions.
AU - Sirunyan,AM
AU - Tumasyan,A
AU - Adam,W
AU - Ambrogi,F
AU - Asilar,E
AU - Bergauer,T
AU - Brandstetter,J
AU - Brondolin,E
AU - Dragicevic,M
AU - Eroe,J
AU - Flechl,M
AU - Friedl,M
AU - Fruehwirth,R
AU - Ghete,VM
AU - Grossmann,J
AU - Hrubec,J
AU - Jeitler,M
AU - Koenig,A
AU - Krammer,N
AU - Kraetschmer,I
AU - Liko,D
AU - Madlener,T
AU - Mikulec,I
AU - Pree,E
AU - Rad,N
AU - Rohringer,H
AU - Schieck,J
AU - Schoefbeck,R
AU - Spanring,M
AU - Spitzbart,D
AU - Waltenberger,W
AU - Wittmann,J
AU - Wulz,C-E
AU - Zarucki,M
AU - Chekhovsky,V
AU - Mossolov,V
AU - Gonzalez,JS
AU - De,Wolf EA
AU - Di,Croce D
AU - Janssen,X
AU - Lauwers,J
AU - Van,Haevermaet H
AU - Van,Mechelen P
AU - Van,Remortel N
AU - Abu,Zeid S
AU - Blekman,F
AU - D'Hondt,J
AU - De,Bruyn I
AU - De,Clercq J
AU - Deroover,K
AU - Flouris,G
AU - Lontkovskyi,D
AU - Lowette,S
AU - Moortgat,S
AU - Moreels,L
AU - Python,Q
AU - Skovpen,K
AU - Tavernier,S
AU - Van,Doninck W
AU - Van,Mulders P
AU - Van,Parijs I
AU - Beghin,D
AU - Brun,H
AU - Clerbaux,B
AU - De,Lentdecker G
AU - Delannoy,H
AU - Dorney,B
AU - Fasanella,G
AU - Favart,L
AU - Goldouzian,R
AU - Grebenyuk,A
AU - Karapostoli,G
AU - Lenzi,T
AU - Luetic,J
AU - Maerschalk,T
AU - Marinov,A
AU - Randle-conde,A
AU - Seva,T
AU - Starling,E
AU - Vander,Velde C
AU - Vanlaer,P
AU - Vannerom,D
AU - Yonamine,R
AU - Zenoni,F
AU - Zhang,F
AU - Cimmino,A
AU - Cornelis,T
AU - Dobur,D
AU - Fagot,A
AU - Gul,M
AU - Khvastunov,I
AU - Poyraz,D
AU - Roskas,C
AU - Salva,S
AU - Tytgat,M
AU - Verbeke,W
AU - Zaganidis,N
AU - Bakhshiansohi,H
AU - Bondu,O
AU - Brochet,S
AU - Bruno,G
AU - Caputo,C
AU - Caudron,A
AU - David,P
AU - De,Visscher S
AU - Delaere,C
AU - Delcourt,M
AU - Francois,B
AU - Giammanco,A
AU - Komm,M
AU - Krintiras,G
AU - Lemaitre,V
AU - Magitteri,A
AU - Mertens,A
AU - Musich,M
AU - Piotrzkowski,K
AU - Quertenmont,L
AU - Saggio,A
AU - Marono,MV
AU - Wertz,S
AU - Zobec,J
AU - Beliy,N
AU - Alda,Junior WL
AU - Alves,FL
AU - Alves,GA
AU - Brito,L
AU - Correa,Martins Junior M
AU - Hensel,C
AU - Moraes,A
AU - Pol,ME
AU - Rebello,Teles P
AU - Belchior,Batista Das Chagas E
AU - Carvalho,W
AU - Chinellato,J
AU - Coelho,E
AU - Da,Costa EM
AU - Da,Silveira GG
AU - De,Jesus Damiao D
AU - Fonseca,De Souza S
AU - Huertas,Guativa LM
AU - Malbouisson,H
AU - Melo,De Almeida M
AU - Mora,Herrera C
AU - Mundim,L
AU - Nogima,H
AU - Sanchez,Rosas LJ
AU - Santoro,A
AU - Sznajder,A
AU - Thiel,M
AU - Tonelli,Manganote EJ
AU - Torres,Da Silva De Araujo F
AU - Vilela,Pereira A
AU - Ahuja,S
AU - Bernardes,CA
AU - Fernandez,Perez Tomei TR
AU - Gregores,EM
AU - Mercadante,PG
AU - Novaes,SF
AU - Padula,SS
AU - Romero,Abad D
DO - 10.1103/PhysRevC.97.044912
PY - 2018///
SN - 2469-9985
TI - Constraints on the chiral magnetic effect using charge-dependent azimuthal correlations in pPb and PbPb collisions at the CERN Large Hadron Collider
T2 - PHYSICAL REVIEW C
UR - http://dx.doi.org/10.1103/PhysRevC.97.044912
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000430545800005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - http://hdl.handle.net/10044/1/60094
VL - 97
ER -