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@article{Sirunyan:2018:10.1103/PhysRevLett.121.242301,
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 Del, Valle AE 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 Taurok, A 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, De Klundert M 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 Marchesini, I and Moortgat, S and Moreels, L and Python, Q and Skovpen, K and Tavernier, S and Van, D},
doi = {10.1103/PhysRevLett.121.242301},
journal = {Physical Review Letters},
title = {Observation of medium-induced modifications of jet fragmentation in Pb-Pb collisions at root s(NN)=5.02 TeV using isolated photon-tagged jets},
url = {http://dx.doi.org/10.1103/PhysRevLett.121.242301},
volume = {121},
year = {2018}
}

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TY  - JOUR
AB  - Measurements of fragmentation functions for jets associated with an isolated photon are presented for the first time in pp and Pb-Pb collisions. The analysis uses data collected with the CMS detector at the CERN LHC at a nucleon-nucleon center-of-mass energy of 5.02 TeV. Fragmentation functions are obtained for jets with pjetT>30  GeV/c in events containing an isolated photon with pγT>60  GeV/c, using charged tracks with transverse momentum ptrkT>1  GeV/c in a cone around the jet axis. The association with an isolated photon constrains the initial pT and azimuthal angle of the parton whose shower produced the jet. For central Pb-Pb collisions, modifications of the jet fragmentation functions are observed when compared to those measured in pp collisions, while no significant differences are found in the 50% most peripheral collisions. Jets in central Pb-Pb events show an excess (depletion) of low (high) pT particles, with a transition around 3  GeV/c. This measurement shows for the first time the in-medium shower modifications of partons (quark dominated) with well-defined initial kinematics. It constitutes a new well-controlled reference for testing theoretical models of the parton passage through the quark-gluon plasma.
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  - Del,Valle AE
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  - Taurok,A
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,De Klundert M
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  - Marchesini,I
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  - Bilin,B
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  - Kalsi,AK
AU  - Lenzi,T
AU  - Luetic,J
AU  - Maerschalk,T
AU  - Marinov,A
AU  - Seva,T
AU  - Starling,E
AU  - Vander,Velde C
AU  - Vanlaer,P
AU  - Vannerom,D
AU  - Yonamine,R
AU  - Zenoni,F
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  - Trocino,D
AU  - Tytgat,M
AU  - Verbeke,W
AU  - Vit,M
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  - Alda,Junior WL
AU  - Alves,FL
AU  - Alves,GA
AU  - Brito,L
AU  - Correia,Silva G
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
DO  - 10.1103/PhysRevLett.121.242301
PY  - 2018///
SN  - 0031-9007
TI  - Observation of medium-induced modifications of jet fragmentation in Pb-Pb collisions at root s(NN)=5.02 TeV using isolated photon-tagged jets
T2  - Physical Review Letters
UR  - http://dx.doi.org/10.1103/PhysRevLett.121.242301
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000453476900007&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/65412
VL  - 121
ER  -

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