Three-photon productions within the $$k_t$$ k t -factorization at the LHC

Abstract Recently, the ATLAS data of isolated three-photon production showed that the next-to-leading order (NLO) collinear factorization is not enough to describe experimental data. Therefore, one needs to calculate the cross section beyond the NLO, and as showed later, these data can be well descr...

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Autores principales:	Ramin Kord Valeshabadi, Majid Modarres, Somayeh Rezaie
Formato:	article
Lenguaje:	EN
Publicado:	SpringerOpen 2021
Materias:	Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/6c87134f9ebc4b8a900deb24e0c122ee
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spelling	oai:doaj.org-article:6c87134f9ebc4b8a900deb24e0c122ee2021-11-07T12:23:50ZThree-photon productions within the $$k_t$$ k t -factorization at the LHC10.1140/epjc/s10052-021-09771-91434-60441434-6052https://doaj.org/article/6c87134f9ebc4b8a900deb24e0c122ee2021-11-01T00:00:00Zhttps://doi.org/10.1140/epjc/s10052-021-09771-9https://doaj.org/toc/1434-6044https://doaj.org/toc/1434-6052Abstract Recently, the ATLAS data of isolated three-photon production showed that the next-to-leading order (NLO) collinear factorization is not enough to describe experimental data. Therefore, one needs to calculate the cross section beyond the NLO, and as showed later, these data can be well described by the NNLO calculation within the collinear factorization framework. However, it is shown that the $$k_t$$ k t -factorization can be quite successful in describing exclusive and high energy collision processes, henceforth we decided to calculate isolated three-photon production within this framework. In this work we use the Martin, Ryskin, and Watt unintegrated parton distribution functions (MRW UPDFs) at LO and NLO levels, in addition to parton branching (PB) UPDFs in order to calculate cross section which we utilize the KATIE parton level event generator. It will be shown that in contrast to collinear factorization, the $$k_t$$ k t -factorization can describe quiet well the three-photon production ATLAS data. Interestingly our results using the NLO-MRW and PB UPDFs can cover the data within their uncertainty bands, similar to the NNLO collinear results.Ramin Kord ValeshabadiMajid ModarresSomayeh RezaieSpringerOpenarticleAstrophysicsQB460-466Nuclear and particle physics. Atomic energy. RadioactivityQC770-798ENEuropean Physical Journal C: Particles and Fields, Vol 81, Iss 11, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	Astrophysics QB460-466 Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Ramin Kord Valeshabadi Majid Modarres Somayeh Rezaie Three-photon productions within the $$k_t$$ k t -factorization at the LHC
description	Abstract Recently, the ATLAS data of isolated three-photon production showed that the next-to-leading order (NLO) collinear factorization is not enough to describe experimental data. Therefore, one needs to calculate the cross section beyond the NLO, and as showed later, these data can be well described by the NNLO calculation within the collinear factorization framework. However, it is shown that the $$k_t$$ k t -factorization can be quite successful in describing exclusive and high energy collision processes, henceforth we decided to calculate isolated three-photon production within this framework. In this work we use the Martin, Ryskin, and Watt unintegrated parton distribution functions (MRW UPDFs) at LO and NLO levels, in addition to parton branching (PB) UPDFs in order to calculate cross section which we utilize the KATIE parton level event generator. It will be shown that in contrast to collinear factorization, the $$k_t$$ k t -factorization can describe quiet well the three-photon production ATLAS data. Interestingly our results using the NLO-MRW and PB UPDFs can cover the data within their uncertainty bands, similar to the NNLO collinear results.
format	article
author	Ramin Kord Valeshabadi Majid Modarres Somayeh Rezaie
author_facet	Ramin Kord Valeshabadi Majid Modarres Somayeh Rezaie
author_sort	Ramin Kord Valeshabadi
title	Three-photon productions within the $$k_t$$ k t -factorization at the LHC
title_short	Three-photon productions within the $$k_t$$ k t -factorization at the LHC
title_full	Three-photon productions within the $$k_t$$ k t -factorization at the LHC
title_fullStr	Three-photon productions within the $$k_t$$ k t -factorization at the LHC
title_full_unstemmed	Three-photon productions within the $$k_t$$ k t -factorization at the LHC
title_sort	three-photon productions within the $$k_t$$ k t -factorization at the lhc
publisher	SpringerOpen
publishDate	2021
url	https://doaj.org/article/6c87134f9ebc4b8a900deb24e0c122ee
work_keys_str_mv	AT raminkordvaleshabadi threephotonproductionswithinthektktfactorizationatthelhc AT majidmodarres threephotonproductionswithinthektktfactorizationatthelhc AT somayehrezaie threephotonproductionswithinthektktfactorizationatthelhc
_version_	1718443493060247552

Three-photon productions within the $$k_t$$ k t -factorization at the LHC

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