prikaz prve stranice dokumenta Probing gluon saturation with next-to-leading order photon production at central rapidities in proton-nucleus collisions
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Scientific paper - Original scientific paper
Probing gluon saturation with next-to-leading order photon production at central rapidities in proton-nucleus collisions
Journal of High Energy Physics, 2017 (2017), 1; 115. https://doi.org/10.1007/JHEP01(2017)115
Benić, Sanjin; Fukushima, Kenji; Venugopalan, Raju

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Benić, S., Fukushima, K. & Venugopalan, R. (2017). Probing gluon saturation with next-to-leading order photon production at central rapidities in proton-nucleus collisions. Journal of High Energy Physics, 2017. (1). doi: 10.1007/JHEP01(2017)115

Benić, Sanjin, et al. "Probing gluon saturation with next-to-leading order photon production at central rapidities in proton-nucleus collisions." Journal of High Energy Physics, vol. 2017, no. 1, 2017. https://doi.org/10.1007/JHEP01(2017)115

Benić, Sanjin, Kenji Fukushima and Raju Venugopalan. "Probing gluon saturation with next-to-leading order photon production at central rapidities in proton-nucleus collisions." Journal of High Energy Physics 2017, no. 1 (2017). https://doi.org/10.1007/JHEP01(2017)115

Benić, S., Fukushima, K. and Venugopalan, R. (2017) 'Probing gluon saturation with next-to-leading order photon production at central rapidities in proton-nucleus collisions', Journal of High Energy Physics, 2017(1). doi: 10.1007/JHEP01(2017)115

Benić S, Fukushima K, Venugopalan R. Probing gluon saturation with next-to-leading order photon production at central rapidities in proton-nucleus collisions. Journal of High Energy Physics [Internet]. 2017 [cited 2024 November 30];2017(1). doi: 10.1007/JHEP01(2017)115

S. Benić, K. Fukushima and R. Venugopalan, "Probing gluon saturation with next-to-leading order photon production at central rapidities in proton-nucleus collisions", Journal of High Energy Physics, vol. 2017, no. 1, 2017. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:265326. [Accessed: 30 November 2024]

Metadata
Title (english)Probing gluon saturation with next-to-leading order photon production at central rapidities in proton-nucleus collisions
AuthorSanjin Benić
MBZ: 310875
AuthorKenji Fukushima
AuthorRaju Venugopalan
Author's institutionUniversity of Zagreb
Faculty of Science
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
We compute the cross section for photons emitted from sea quarks in proton-nucleus collisions at collider energies. The computation is performed within the dilute-dense kinematics of the Color Glass Condensate (CGC) effective field theory. Albeit the result obtained is formally at next- to-leading order in the CGC power counting, it provides the dominant contribution for central rapidities. We observe that the inclusive photon cross section is proportional to all-twist Wilson line correlators in the nucleus. These correlators also appear in quark-pair production ; unlike the latter, photon production is insensitive to hadronization uncertainties and therefore more sensitive to multi-parton correlations in the gluon saturation regime of QCD. We demonstrate that k⊥ and collinear factorized expressions for inclusive photon production are obtained as leading twist approximations to our result. In particular, the collinearly factorized expression is directly sensitive to the nuclear gluon distribution at small x. Other results of interest include the realization of the Low-Burnett-Kroll soft photon theorem in the CGC framework and a comparative study of how the photon amplitude is obtained in Lorenz and light-cone gauges.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titleJournal of High Energy Physics
Numberingvol. 2017, no. 1, 115
p-ISSN1126-6708
e-ISSN1029-8479
DOIhttps://doi.org/10.1007/JHEP01(2017)115
URN:NBNurn:nbn:hr:217:265326
Publication2017
Document URLhttps://link.springer.com/article/10.1007%2FJHEP01%282017%29115
Type of resourceText
Access conditionsOpen access
Terms of useLicence Attribution 4.0 International (CC BY 4.0) icon
Public noteOpen Access, © The Author(s) 2017. Article funded by SCOAP3 and licensed under CC BY 4.0. Received: October 8, 2016. Accepted: January 15, 2017. Published: January 26, 2017.
Created on2020-02-27 19:19:23