@article{c667955832504264a4ae6ac41d91fdc4,
title = "The production of isolated photons in PbPb and pp collisions at √sNN = 5.02 TeV",
abstract = "The transverse energy (ETγ) 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 <ETγ< 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. [Figure not available: see fulltext.]",
keywords = "Hadron-Hadron scattering (experiments), Heavy-ion collision, Photon production",
author = "{The CMS Collaboration} and Sirunyan, {A. M.} and A. Tumasyan and W. Adam and F. Ambrogi and T. Bergauer and M. Dragicevic and J. Er{\"o} and {Escalante Del Valle}, A. and M. Flechl and R. Fr{\"u}hwirth and M. Jeitler and N. Krammer and I. Kr{\"a}tschmer and D. Liko and T. Madlener and I. Mikulec and N. Rad and J. Schieck and R. Sch{\"o}fbeck and M. Spanring and W. Waltenberger and Wulz, {C. E.} and M. Zarucki and V. Drugakov and V. Mossolov and {Suarez Gonzalez}, J. and Darwish, {M. R.} and {De Wolf}, {E. A.} and {Di Croce}, D. and X. Janssen and T. Kello and A. Lelek and M. Pieters and {Rejeb Sfar}, H. and {Van Haevermaet}, H. and {Van Mechelen}, P. and {Van Putte}, S. and {Van Remortel}, N. and F. Blekman and Bols, {E. S.} and Chhibra, {S. S.} and J. D{\textquoteright}Hondt and {De Clercq}, J. and D. Lontkovskyi and S. Lowette and I. Marchesini and S. Moortgat and Hahn, {K. A.} and Schmitt, {M. H.} and M. Velasco",
note = "Funding Information: The catalogue of the diatom genera is part of a larger project funded by NSF and conducted at the California Academy of Sciences in conjunction with the Academy of Natural Sciences of Philadelphia on a computerized database of verified diatom names. The database currently in progress will contain an estimated 75,000 records of diatom names, including genera, species, varieties and forms. These records which contain basic nomenclatural information are being verified for accuracy against the original publications and will soon be available on the Internet. (http://www. calacademy. org/research/diatoms/) Publisher Copyright: {\textcopyright} 2020, The Author(s).",
year = "2020",
month = jul,
day = "1",
doi = "10.1007/JHEP07(2020)116",
language = "English (US)",
volume = "2020",
journal = "Journal of High Energy Physics",
issn = "1126-6708",
publisher = "Springer Verlag",
number = "7",
}