Equality of hemisphere soft functions for , DIS and pp collisions at
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:
- 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}
}
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Publisher's Version of Record at https://doi.org/10.1016/j.physletb.2015.06.057
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Cited by: 26 works
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