Gluon gravitational form factors at large momentum transfer

We perform a perturbative QCD analysis of the gluonic gravitational form factors (GFFs) of the proton and pion at large momentum transfer. We derive the explicit factorization formula of the GFFs in terms of the distribution amplitudes of hadrons. At the leading power, we find that the gluon GFFs Ag...

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Autores principales:	Xuan-Bo Tong, Jian-Ping Ma, Feng Yuan
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/76ec7a85c4b44a3090f03ea0e303fea4
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spelling	oai:doaj.org-article:76ec7a85c4b44a3090f03ea0e303fea42021-12-04T04:32:34ZGluon gravitational form factors at large momentum transfer0370-269310.1016/j.physletb.2021.136751https://doaj.org/article/76ec7a85c4b44a3090f03ea0e303fea42021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0370269321006912https://doaj.org/toc/0370-2693We perform a perturbative QCD analysis of the gluonic gravitational form factors (GFFs) of the proton and pion at large momentum transfer. We derive the explicit factorization formula of the GFFs in terms of the distribution amplitudes of hadrons. At the leading power, we find that the gluon GFFs Ag and Cg scale as Agπ(t)=Cgπ(t)∼1/(−t) for pion, Agp(t)∼1/(−t)2 and Cgp(t)∼ln2⁡(−t/Λ2)/(−t)3 for proton, respectively, where t is the momentum transfer and Λ a non-perturbative scale to regulate the endpoint singularity in Cgp calculation. Our results provide a unique perspective of the momentum dependence of the GFFs and will help to improve our understanding of the internal pressure distributions of hadrons.Xuan-Bo TongJian-Ping MaFeng YuanElsevierarticlePhysicsQC1-999ENPhysics Letters B, Vol 823, Iss , Pp 136751- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 Xuan-Bo Tong Jian-Ping Ma Feng Yuan Gluon gravitational form factors at large momentum transfer
description	We perform a perturbative QCD analysis of the gluonic gravitational form factors (GFFs) of the proton and pion at large momentum transfer. We derive the explicit factorization formula of the GFFs in terms of the distribution amplitudes of hadrons. At the leading power, we find that the gluon GFFs Ag and Cg scale as Agπ(t)=Cgπ(t)∼1/(−t) for pion, Agp(t)∼1/(−t)2 and Cgp(t)∼ln2⁡(−t/Λ2)/(−t)3 for proton, respectively, where t is the momentum transfer and Λ a non-perturbative scale to regulate the endpoint singularity in Cgp calculation. Our results provide a unique perspective of the momentum dependence of the GFFs and will help to improve our understanding of the internal pressure distributions of hadrons.
format	article
author	Xuan-Bo Tong Jian-Ping Ma Feng Yuan
author_facet	Xuan-Bo Tong Jian-Ping Ma Feng Yuan
author_sort	Xuan-Bo Tong
title	Gluon gravitational form factors at large momentum transfer
title_short	Gluon gravitational form factors at large momentum transfer
title_full	Gluon gravitational form factors at large momentum transfer
title_fullStr	Gluon gravitational form factors at large momentum transfer
title_full_unstemmed	Gluon gravitational form factors at large momentum transfer
title_sort	gluon gravitational form factors at large momentum transfer
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/76ec7a85c4b44a3090f03ea0e303fea4
work_keys_str_mv	AT xuanbotong gluongravitationalformfactorsatlargemomentumtransfer AT jianpingma gluongravitationalformfactorsatlargemomentumtransfer AT fengyuan gluongravitationalformfactorsatlargemomentumtransfer
_version_	1718373038428258304

Gluon gravitational form factors at large momentum transfer

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