Ultra-high energy neutrino-nucleon scattering and gluon saturation

Journal Article · Sat Dec 01 00:00:00 EST 2018 · International Journal of Modern Physics E

DOI:https://doi.org/10.1142/s0218301318400062· OSTI ID:1610686

Jalilian-Marian, Jamal ^[1]

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1. Natural Sciences Department, Baruch College, 17 Lexington Ave., New York, NY 10010, USA; CUNY Graduate Center, 365 Fifth Avenue, New York, NY 10016, USA

Ultra-high energy neutrinos are an enigma; among their many poorly understood aspects are their origins and how they interact with nucleons when they reach the Earth. Due to the hard scale ([Formula: see text]) involved in neutrino-nucleon scattering and for a large range of neutrino energies, it is appropriate to describe the target nucleon in terms of its partons — quarks and gluons — and their evolution with [Formula: see text] as governed by the Dokshitzer–Gribov–Lipatov–Altarelli–Parisi (DGLAP) evolution equations of perturbative Quantum ChromoDynamics (pQCD). Nevertheless, at the highest neutrino energies, the scattering cross-section is dominated by the contribution of small [Formula: see text] gluons of the target where one expects DGLAP evolution equations to break down due to high gluon density effects (gluon saturation). Here, we give a brief overview of gluon saturation physics in QCD and its effects on ultra-high energy neutrino-nucleon (nucleus) scattering cross-section.

• Research Organization: City Univ. of New York (CUNY), NY (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: SC0002307
• OSTI ID: 1610686
• Journal Information: International Journal of Modern Physics E, Vol. 27, Issue 12; ISSN 0218-3013
• Publisher: World Scientific
• Country of Publication: United States
• Language: English

Related Subjects

Physics