skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Equality of hemisphere soft functions for e + e , DIS and pp collisions at O ( α s 2 )

Abstract

We present a simple observation about soft amplitudes and soft functions appearing in factorizable cross sections in ee, ep, and pp collisions that has not clearly been made in previous literature, namely, that the hemisphere soft functions that appear in event shape distributions in e+e- → dijets, deep inelastic scattering (DIS), and in Drell–Yan (DY) processes are equal in perturbation theory up to O(αs2), even though individual amplitudes may have opposite sign imaginary parts due to changing complex pole prescriptions in eikonal propagators for incoming vs. outgoing lines. We also explore potential generalizations of this observation to soft functions for other observables or with more jets in the final state.

Authors:
; ORCiD logo;
Publication Date:
Research Org.:
Univ. of Arizona, Tucson, AZ (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1213789
Alternate Identifier(s):
OSTI ID: 1215405; OSTI ID: 1221565
Report Number(s):
LA-UR-15-22720
Journal ID: ISSN 0370-2693; S0370269315004797; PII: S0370269315004797
Grant/Contract Number:  
AC52-06NA25396; 20130019DR; 20140671PRD2; FG02-04ER41338
Resource Type:
Journal Article: Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 748 Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; QCD; soft function; factorization; jets; deep inelastic scattering; Drell–Yan; Drell-Yan

Citation Formats

Kang, Daekyoung, Labun, Ou Z., and Lee, Christopher. Equality of hemisphere soft functions for e + e − , DIS and pp collisions at O ( α s 2 ). Netherlands: N. p., 2015. Web. doi:10.1016/j.physletb.2015.06.057.
Kang, Daekyoung, Labun, Ou Z., & Lee, Christopher. Equality of hemisphere soft functions for e + e − , DIS and pp collisions at O ( α s 2 ). Netherlands. https://doi.org/10.1016/j.physletb.2015.06.057
Kang, Daekyoung, Labun, Ou Z., and Lee, Christopher. 2015. "Equality of hemisphere soft functions for e + e − , DIS and pp collisions at O ( α s 2 )". Netherlands. https://doi.org/10.1016/j.physletb.2015.06.057.
@article{osti_1213789,
title = {Equality of hemisphere soft functions for e + e − , DIS and pp collisions at O ( α s 2 )},
author = {Kang, Daekyoung and Labun, Ou Z. and Lee, Christopher},
abstractNote = {We present a simple observation about soft amplitudes and soft functions appearing in factorizable cross sections in ee, ep, and pp collisions that has not clearly been made in previous literature, namely, that the hemisphere soft functions that appear in event shape distributions in e+e- → dijets, deep inelastic scattering (DIS), and in Drell–Yan (DY) processes are equal in perturbation theory up to O(αs2), even though individual amplitudes may have opposite sign imaginary parts due to changing complex pole prescriptions in eikonal propagators for incoming vs. outgoing lines. We also explore potential generalizations of this observation to soft functions for other observables or with more jets in the final state.},
doi = {10.1016/j.physletb.2015.06.057},
url = {https://www.osti.gov/biblio/1213789}, journal = {Physics Letters B},
issn = {0370-2693},
number = C,
volume = 748,
place = {Netherlands},
year = {Tue Sep 01 00:00:00 EDT 2015},
month = {Tue Sep 01 00:00:00 EDT 2015}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at https://doi.org/10.1016/j.physletb.2015.06.057

Citation Metrics:
Cited by: 26 works
Citation information provided by
Web of Science

Save / Share: