The production of isolated photons in PbPb and pp collisions at sNN−−−√ = 5.02 TeV
| dc.contributor.author | CMS Collaboration | |
| dc.date.accessioned | 2022-08-31T21:50:28Z | |
| dc.date.available | 2022-08-31T21:50:28Z | |
| dc.date.issued | 2020-07-17 | |
| dc.identifier.citation | The CMS collaboration., Sirunyan, A.M., Tumasyan, A. et al. The production of isolated photons in PbPb and pp collisions at sNN−−−√ = 5.02 TeV. J. High Energ. Phys. 2020, 116 (2020). https://doi.org/10.1007/JHEP07(2020)116 | en_US |
| dc.identifier.uri | http://hdl.handle.net/1808/33389 | |
| dc.description.abstract | The transverse energy (EγT) spectra of photons isolated from other particles are measured using proton-proton (pp) and lead-lead (PbPb) collisions at the LHC at sNN−−−√ = 5.02 TeV with integrated luminosities of 27.4 pb−1 and 404 μb−1 for pp and PbPb data, respectively. The results are presented for photons with 25 < EγT < 200 GeV in the pseudorapidity range |η| < 1.44, and for different centrality intervals for PbPb collisions. Photon production in PbPb collisions is consistent with that in pp collisions scaled by the number of binary nucleon-nucleon collisions, demonstrating that photons do not interact with the quark-gluon plasma. Therefore, isolated photons can provide information about the initial energy of the associated parton in photon+jet measurements. The results are compared with predictions from the next-to-leading-order jetphox generator for different parton distribution functions (PDFs) and nuclear PDFs (nPDFs). The comparisons can help to constrain the nPDFs global fits. | en_US |
| dc.publisher | Springer | en_US |
| dc.rights | Copyright CERN, for the benefit of the CMS Collaboration. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0). | en_US |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en_US |
| dc.subject | Hadron-Hadron scattering (experiments) | en_US |
| dc.subject | Heavy-ion collision | en_US |
| dc.subject | Photon production | en_US |
| dc.title | The production of isolated photons in PbPb and pp collisions at sNN−−−√ = 5.02 TeV | en_US |
| dc.type | Article | en_US |
| kusw.kuauthor | Bean, Alice Louise | |
| kusw.kudepartment | Physics & Astronomy | en_US |
| dc.identifier.doi | 10.1007/JHEP07(2020)116 | en_US |
| kusw.oaversion | Scholarly/refereed, publisher version | en_US |
| kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
| dc.rights.accessrights | openAccess | en_US |
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Except where otherwise noted, this item's license is described as: Copyright CERN, for the benefit of the CMS Collaboration. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0).
