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Title: Collinear factorization in wide-angle hadron pair production in e + e annihilation

Abstract

We compute the inclusive unpolarized dihadron production cross section in the far from back-to-back region of e(+)e(-) annihilation in leading order pQCD using existing fragmentation function fits and standard collinear factorization, focusing on the large transverse momentum region where transverse momentum is comparable to the hard scale (the center-of-mass energy). We compare with standard transverse-momentum-dependent (TMD) fragmentation function-based predictions intended for the small transverse momentum region with the aim of testing the expectation that the two types of calculation roughly coincide at intermediate transverse momentum. We find significant tension, within the intermediate transverse momentum region, between calculations done with existing nonperturbative TMD fragmentation functions and collinear factorization calculations if the center-of-mass energy is not extremely large. We argue that e(+)e(-) measurements are ideal for resolving this tension and exploring the large-to-small transverse momentum transition, given the typically larger hard scales (greater than or similar to 10 GeV) of the process as compared with similar scenarios that arise in semi-inclusive deep inelastic scattering and fixed-target Drell-Yan measurements.

Authors:
; ORCiD logo; ; ORCiD logo
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); Old Dominion Univ., Norfolk, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26), Washington, DC (United States); European Commission (EC)
OSTI Identifier:
1607556
Alternate Identifier(s):
OSTI ID: 1574290; OSTI ID: 1581245; OSTI ID: 1593804
Report Number(s):
JLAB-THY-19-3020; DOE/OR/23177-4766; arXiv:1909.02951; arXiv:1909.02951v2
Journal ID: ISSN 2470-0010; PRVDAQ; 094014
Grant/Contract Number:  
SC0018106; AC02-06CH11357; AC05-06OR23177; 795475
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 100 Journal Issue: 9; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Moffat, E., Rogers, T. C., Sato, N., and Signori, A. Collinear factorization in wide-angle hadron pair production in e + e − annihilation. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.100.094014.
Moffat, E., Rogers, T. C., Sato, N., & Signori, A. Collinear factorization in wide-angle hadron pair production in e + e − annihilation. United States. https://doi.org/10.1103/PhysRevD.100.094014
Moffat, E., Rogers, T. C., Sato, N., and Signori, A. Thu . "Collinear factorization in wide-angle hadron pair production in e + e − annihilation". United States. https://doi.org/10.1103/PhysRevD.100.094014.
@article{osti_1607556,
title = {Collinear factorization in wide-angle hadron pair production in e + e − annihilation},
author = {Moffat, E. and Rogers, T. C. and Sato, N. and Signori, A.},
abstractNote = {We compute the inclusive unpolarized dihadron production cross section in the far from back-to-back region of e(+)e(-) annihilation in leading order pQCD using existing fragmentation function fits and standard collinear factorization, focusing on the large transverse momentum region where transverse momentum is comparable to the hard scale (the center-of-mass energy). We compare with standard transverse-momentum-dependent (TMD) fragmentation function-based predictions intended for the small transverse momentum region with the aim of testing the expectation that the two types of calculation roughly coincide at intermediate transverse momentum. We find significant tension, within the intermediate transverse momentum region, between calculations done with existing nonperturbative TMD fragmentation functions and collinear factorization calculations if the center-of-mass energy is not extremely large. We argue that e(+)e(-) measurements are ideal for resolving this tension and exploring the large-to-small transverse momentum transition, given the typically larger hard scales (greater than or similar to 10 GeV) of the process as compared with similar scenarios that arise in semi-inclusive deep inelastic scattering and fixed-target Drell-Yan measurements.},
doi = {10.1103/PhysRevD.100.094014},
journal = {Physical Review D},
number = 9,
volume = 100,
place = {United States},
year = {Thu Nov 14 00:00:00 EST 2019},
month = {Thu Nov 14 00:00:00 EST 2019}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevD.100.094014

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Cited by: 8 works
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