Towards a single scale-dependent Pomeron in holographic light-front QCD
Abstract
The Pomeron Regge trajectory underlies the dynamics dependence of hadronic total cross sections and diffractive reactions at high energies. The physics of the Pomeron is closely related to the gluon distribution function and the gluon gravitational form factor of the target hadron. In this article we examine the scale dependence of the nonperturbative gluon distribution in the nucleon and the pion, which was derived in a previous article [G.F. de Téramond, H.G. Dosch, T. Liu, R.S. Sufian, S.J. Brodsky, and A. Deur, Gluon matter distribution in the proton and pion from extended holographic light-front QCD, Phys. Rev. D 104, 114005 (2021)] in the framework of holographic light-front QCD and the Veneziano model. We argue that the QCD evolution of the gluon distribution function g(x,μ) to large μ2 leads to a single scale-dependent Pomeron. The resulting Pomeron trajectory αP(t,μ) not only depends on the momentum transfer squared t, but also on the physical scale μ of the amplitude, such as the virtuality Q2 of the interacting photon in inclusive diffractive electroproduction, thus unifying the soft and the perturbative Pomeron. This can explain not only the Q2 evolution of the proton structure function F2(x,Q2) at small x, but also the observed energymore »
- Publication Date:
- Research Org.:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Contributing Org.:
- HLFHS Collaboration
- OSTI Identifier:
- 1846497
- Alternate Identifier(s):
- OSTI ID: 1846634
- Report Number(s):
- JLAB-THY-22-3551; DOE/OR/23177-5408; arXiv:2201.09813; SLAC-PUB-17641
Journal ID: ISSN 2470-0010; PRVDAQ; 034029
- Grant/Contract Number:
- FG02-04ER41302; AC05-06OR23177; AC02-76SF00515
- Resource Type:
- Published Article
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Name: Physical Review D Journal Volume: 105 Journal Issue: 3; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Diffractive production; Quantum chromodynamics; Gluons; Hadrons
Citation Formats
Dosch, Hans Günter, de Téramond, Guy F., Liu, Tianbo, Sufian, Raza Sabbir, Brodsky, Stanley J., Deur, Alexandre, and HLFHS Collaboration. Towards a single scale-dependent Pomeron in holographic light-front QCD. United States: N. p., 2022.
Web. doi:10.1103/PhysRevD.105.034029.
Dosch, Hans Günter, de Téramond, Guy F., Liu, Tianbo, Sufian, Raza Sabbir, Brodsky, Stanley J., Deur, Alexandre, & HLFHS Collaboration. Towards a single scale-dependent Pomeron in holographic light-front QCD. United States. https://doi.org/10.1103/PhysRevD.105.034029
Dosch, Hans Günter, de Téramond, Guy F., Liu, Tianbo, Sufian, Raza Sabbir, Brodsky, Stanley J., Deur, Alexandre, and HLFHS Collaboration. Fri .
"Towards a single scale-dependent Pomeron in holographic light-front QCD". United States. https://doi.org/10.1103/PhysRevD.105.034029.
@article{osti_1846497,
title = {Towards a single scale-dependent Pomeron in holographic light-front QCD},
author = {Dosch, Hans Günter and de Téramond, Guy F. and Liu, Tianbo and Sufian, Raza Sabbir and Brodsky, Stanley J. and Deur, Alexandre and HLFHS Collaboration},
abstractNote = {The Pomeron Regge trajectory underlies the dynamics dependence of hadronic total cross sections and diffractive reactions at high energies. The physics of the Pomeron is closely related to the gluon distribution function and the gluon gravitational form factor of the target hadron. In this article we examine the scale dependence of the nonperturbative gluon distribution in the nucleon and the pion, which was derived in a previous article [G.F. de Téramond, H.G. Dosch, T. Liu, R.S. Sufian, S.J. Brodsky, and A. Deur, Gluon matter distribution in the proton and pion from extended holographic light-front QCD, Phys. Rev. D 104, 114005 (2021)] in the framework of holographic light-front QCD and the Veneziano model. We argue that the QCD evolution of the gluon distribution function g(x,μ) to large μ2 leads to a single scale-dependent Pomeron. The resulting Pomeron trajectory αP(t,μ) not only depends on the momentum transfer squared t, but also on the physical scale μ of the amplitude, such as the virtuality Q2 of the interacting photon in inclusive diffractive electroproduction, thus unifying the soft and the perturbative Pomeron. This can explain not only the Q2 evolution of the proton structure function F2(x,Q2) at small x, but also the observed energy and Q2 dependence of high energy diffractive processes involving virtual photons up to LHC energies.},
doi = {10.1103/PhysRevD.105.034029},
journal = {Physical Review D},
number = 3,
volume = 105,
place = {United States},
year = {Fri Feb 25 00:00:00 EST 2022},
month = {Fri Feb 25 00:00:00 EST 2022}
}
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