BibTex format
@article{Belyaev:2026:10.1016/j.physletb.2026.140679,
author = {Belyaev, A and Gevorgyan, A and Hayrapetyan, A and Tumasyan, A and Adam, W and Benato, L and Bergauer, T and Dragicevic, M and Gundacker, S and Guven, AK and Hussain, PS and Jeitler, M and Krammer, N and Li, A and Liko, D and Matthewman, M and Schieck, J and Schöfbeck, R and Shooshtari, M and Sonawane, M and Van, Den Bossche N and Waltenberger, W and Wulz, CE and Janssen, T and Kwon, H and Ocampo, Henao D and Van, Laer T and Van, Mechelen P and Ahmadi, D and Bierkens, J and Breugelmans, N and Dansana, S and De, Moor A and Delcourt, M and Gupta, C and Heyen, F and Hong, Y and Kang, K and Kashko, P and Lowette, S and Makarenko, I and Nandakumar, S and Tavernier, S and Tytgat, M and Van, Onsem GP and Van, Putte S and Vannerom, D and Wybouw, T and Beshr, A and Bilin, B and Caviglia, Roman F and Clerbaux, B and Das, AK and De, Bruyn I and De, Lentdecker G and Ducarme, E and Evard, H and Favart, L and Kalaitzidou, I and Khalilzadeh, A and Malara, A and Shahzad, MA and Thomas, L and Vanden, B},
doi = {10.1016/j.physletb.2026.140679},
journal = {Physics Letters Section B Nuclear Elementary Particle and High Energy Physics},
title = {System-size dependence of charged-particle suppression in ultrarelativistic nucleus-nucleus collisions},
url = {http://dx.doi.org/10.1016/j.physletb.2026.140679},
volume = {880},
year = {2026}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - High-energy partons lose energy while propagating through the hot, strongly interacting medium produced in ultrarelativistic nucleus-nucleus collisions, leading to a suppression of particle production at high transverse momentum (p <inf>T</inf>). The dependence of this energy loss on the size of the colliding nuclear system has yet to be firmly established experimentally. This Letter presents a systematic study of charged-particle suppression across four different nucleus-nucleus collision systems using nuclear modification factors (R <inf>AA</inf>) measured by the CMS Collaboration at the CERN LHC. Previous CMS measurements of R <inf>AA</inf> in oxygen-oxygen, xenon-xenon, and lead-lead collisions are recast with identical p <inf>T</inf> intervals and are complemented by the first measurement of the charged-particle R <inf>AA</inf> in neon-neon collisions at [b]s<inf>NN</inf>=5.36TeV. The neon-neon data correspond to an integrated luminosity of 0.76nb<sup>−1</sup>. The R <inf>AA</inf> in all collision systems examined show similar qualitative trends as a function of p <inf>T</inf>, but have a magnitude which is ordered with the nucleon number A . The R <inf>AA</inf> feature a downward slope at low p <inf>T</inf>, a local minimum at around 5–7GeV, and an upward slope with increasing p <inf>T</inf>. The R <inf>AA</inf> are also compared in terms of A <sup>1/3</sup>, which is proportional to the nuclear radius. Models including only initial-state nuclear effects fail to reproduce the observed trends, whereas energy loss models reproduce the trends in the region p<inf>T</inf>'9.6GeV.
AU - Belyaev,A
AU - Gevorgyan,A
AU - Hayrapetyan,A
AU - Tumasyan,A
AU - Adam,W
AU - Benato,L
AU - Bergauer,T
AU - Dragicevic,M
AU - Gundacker,S
AU - Guven,AK
AU - Hussain,PS
AU - Jeitler,M
AU - Krammer,N
AU - Li,A
AU - Liko,D
AU - Matthewman,M
AU - Schieck,J
AU - Schöfbeck,R
AU - Shooshtari,M
AU - Sonawane,M
AU - Van,Den Bossche N
AU - Waltenberger,W
AU - Wulz,CE
AU - Janssen,T
AU - Kwon,H
AU - Ocampo,Henao D
AU - Van,Laer T
AU - Van,Mechelen P
AU - Ahmadi,D
AU - Bierkens,J
AU - Breugelmans,N
AU - Dansana,S
AU - De,Moor A
AU - Delcourt,M
AU - Gupta,C
AU - Heyen,F
AU - Hong,Y
AU - Kang,K
AU - Kashko,P
AU - Lowette,S
AU - Makarenko,I
AU - Nandakumar,S
AU - Tavernier,S
AU - Tytgat,M
AU - Van,Onsem GP
AU - Van,Putte S
AU - Vannerom,D
AU - Wybouw,T
AU - Beshr,A
AU - Bilin,B
AU - Caviglia,Roman F
AU - Clerbaux,B
AU - Das,AK
AU - De,Bruyn I
AU - De,Lentdecker G
AU - Ducarme,E
AU - Evard,H
AU - Favart,L
AU - Kalaitzidou,I
AU - Khalilzadeh,A
AU - Malara,A
AU - Shahzad,MA
AU - Thomas,L
AU - Vanden,Bemden M
AU - Vander,Velde C
AU - Vanlaer,P
AU - Yuan,C
AU - Zhang,F
AU - Cauwels,A
AU - De,Coen M
AU - Dobur,D
AU - Giordano,C
AU - Gokbulut,G
AU - Kaspar,K
AU - Kavtaradze,D
AU - Marckx,D
AU - Mehta,A
AU - Skovpen,K
AU - Tomaru,AM
AU - van,der Linden J
AU - Vandenbroeck,J
AU - Aarup,Petersen H
AU - Benecke,A
AU - Bethani,A
AU - Cappati,A
AU - De,Favereau De Jeneret J
AU - Delaere,C
AU - Gameiro,Casalinho F
AU - Giammanco,A
AU - Guzel,AO
AU - Hussain,M
AU - Lawrence,Z
AU - Lemaitre,V
AU - Lidrych,J
AU - Malek,P
AU - Turkcapar,S
AU - Alves,GA
AU - Barroso,Ferreira Filho M
AU - Coelho,E
AU - Gonçalves,Sales MV
DO - 10.1016/j.physletb.2026.140679
PY - 2026///
SN - 0370-2693
TI - System-size dependence of charged-particle suppression in ultrarelativistic nucleus-nucleus collisions
T2 - Physics Letters Section B Nuclear Elementary Particle and High Energy Physics
UR - http://dx.doi.org/10.1016/j.physletb.2026.140679
VL - 880
ER -