Published March 7, 2014
| Published + Submitted
Journal Article
Open
Modification of jet shapes in PbPb collisions at √sNN = 2.76 TeV
Abstract
The first measurement of jet shapes, defined as the fractional transverse momentum radial distribution, for inclusive jets produced in heavy-ion collisions is presented. Data samples of PbPb and pp collisions, corresponding to integrated luminosities of 150 μb^(−1) and 5.3 pb^(−1) respectively, were collected at a nucleon–nucleon centre-of-mass energy of √sNN = 2.76 TeV with the CMS detector at the LHC. The jets are reconstructed with the anti-k_T algorithm with a distance parameter R=0.3, and the jet shapes are measured for charged particles with transverse momentum p_T>1 GeV/c. The jet shapes measured in PbPb collisions in different collision centralities are compared to reference distributions based on the pp data. A centrality-dependent modification of the jet shapes is observed in the more central PbPb collisions, indicating a redistribution of the energy inside the jet cone. This measurement provides information about the parton shower mechanism in the hot and dense medium produced in heavy-ion collisions.
Additional Information
© 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license. Received 3 October 2013. Received in revised form 30 December 2013. Accepted 21 January 2014. Available online 27 January 2014, Editor: M. Doser. We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centres and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES (Croatia); RPF (Cyprus); MoER, SF0690030s09 and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NKTH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Republic of Korea); LAS (Lithuania); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS and RFBR (Russia); MESTD (Serbia); SEIDI and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); ThEPCenter, IPST, STAR and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (USA). Individuals have received support from the Marie-Curie programme and the European Research Council and EPLANET (European Union); the Leventis Foundation; the A.P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the Ministry of Education, Youth and Sports (MEYS) of Czech Republic; the Council of Science and Industrial Research, India; the Compagnia di San Paolo (Torino); the HOMING PLUS programme of Foundation for Polish Science, cofinanced by EU, Regional Development Fund; and the Thalis and Aristeia programmes cofinanced by EU-ESF and the Greek NSRF.Attached Files
Published - 1-s2.0-S0370269314000641-main.pdf
Submitted - 1310.0878v2.pdf
Files
1310.0878v2.pdf
Files
(1.0 MB)
| Name | Size | Download all |
|---|---|---|
|
md5:e80c4f9036bc73340bf0e8ca11701cf1
|
422.4 kB | Preview Download |
|
md5:1f2e00eb44abd60acb79655c1d03054b
|
591.1 kB | Preview Download |
Additional details
- Eprint ID
- 45466
- Resolver ID
- CaltechAUTHORS:20140502-100214924
- BMWF and FWF (Austria)
- FNRS and FWO (Belgium)
- CNPq (Brazil)
- CAPES (Brazil)
- FAPERJ (Brazil)
- FAPESP (Brazil)
- MES (Bulgaria)
- CERN
- CAS
- MoST and NSFC (China)
- COLCIENCIAS (Colombia)
- MSES (Croatia)
- RPF (Cyprus)
- MoER
- SF0690030s09
- ERDF (Estonia)
- Academy of Finland
- MEC (Finland)
- HIP (Finland)
- CEA and CNRS/IN2P3 (France)
- BMBF (Germany)
- HGF (Germany)
- GSRT (Greece)
- OTKA and NKTH (Hungary)
- DAE and DST (India)
- IPM (Iran)
- Science Foundation, Ireland
- Istituto Nazionale di Fisica Nucleare (INFN)
- NRF and WCU (Korea)
- LAS (Lithuania)
- CINVESTAV (Mexico)
- CONACYT (Mexico)
- SEP and UASLP-FAI (Mexico)
- MBIE (New Zealand)
- PAEC (Pakistan)
- MSHE and NSC (Poland)
- Fundação para a Ciência e a Tecnologia (FCT)
- JINR (Dubna)
- MON
- RosAtom
- RAS and RFBR (Russia)
- MESTD (Serbia)
- SEIDI and CPAN (Spain)
- Swiss Funding Agencies (Switzerland)
- National Science Council (Taipei)
- ThEPCenter
- IPST (Thailand)
- STAR and NSTDA (Thailand)
- TUBITAK and TAEK (Turkey)
- NASU (Ukraine)
- Science and Technology Facilities Council (STFC)
- Department of Energy (DOE)
- NSF
- Marie Curie programme and the European Research Council and EPLANET (European Union)
- Leventis Foundation
- Alfred P. Sloan Foundation
- Alexander von Humboldt Foundation
- Belgian Federal Science Policy Office
- Fonds pour la Formation à la Recherche dans l'índustrie et dans l'Ágriculture (FRIA-Belgium)
- Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)
- Ministry of Education, Youth and Sports (MEYS) of Czech Republic
- Council of Scientific and Industrial Research of India
- Compagnia di San Paolo (Torino)
- HOMING PLUS programme of Foundation for Polish Science
- European Union (EU)
- Regional Development Fund
- Thalis and Aristeia programmes cofinanced by EU-ESF
- Greek NSRF
- Deutsche Forschungsgemeinschaft (DFG)
- Created
-
2014-05-02Created from EPrint's datestamp field
- Updated
-
2021-11-10Created from EPrint's last_modified field
- Caltech groups
- CMS@Caltech