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Title: Gluonic transversity from lattice QCD

In this paper, we present an exploratory study of the gluonic structure of the Φ meson using lattice QCD (LQCD). This includes the first investigation of gluonic transversity via the leading moment of the twist-2 double-helicity-flip gluonic structure function Δ(x,Q 2). This structure function only exists for targets of spin J ≥ 1 and does not mix with quark distributions at leading twist, thereby providing a particularly clean probe of gluonic degrees of freedom. We also explore the gluonic analogue of the Soffer bound which relates the helicity flip and nonflip gluonic distributions, finding it to be saturated at the level of 80%. Finally, this work sets the stage for more complex LQCD studies of gluonic structure in the nucleon and in light nuclei where Δ(x,Q 2) is an “exotic glue” observable probing gluons in a nucleus not associated with individual nucleons.
Authors:
 [1] ;  [1]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Publication Date:
Grant/Contract Number:
SC0010495; SC0011090
Type:
Accepted Manuscript
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 94; Journal Issue: 1; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Research Org:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1505585
Alternate Identifier(s):
OSTI ID: 1272656

Detmold, W., and Shanahan, P. E.. Gluonic transversity from lattice QCD. United States: N. p., Web. doi:10.1103/physrevd.94.014507.
Detmold, W., & Shanahan, P. E.. Gluonic transversity from lattice QCD. United States. doi:10.1103/physrevd.94.014507.
Detmold, W., and Shanahan, P. E.. 2016. "Gluonic transversity from lattice QCD". United States. doi:10.1103/physrevd.94.014507. https://www.osti.gov/servlets/purl/1505585.
@article{osti_1505585,
title = {Gluonic transversity from lattice QCD},
author = {Detmold, W. and Shanahan, P. E.},
abstractNote = {In this paper, we present an exploratory study of the gluonic structure of the Φ meson using lattice QCD (LQCD). This includes the first investigation of gluonic transversity via the leading moment of the twist-2 double-helicity-flip gluonic structure function Δ(x,Q2). This structure function only exists for targets of spin J ≥ 1 and does not mix with quark distributions at leading twist, thereby providing a particularly clean probe of gluonic degrees of freedom. We also explore the gluonic analogue of the Soffer bound which relates the helicity flip and nonflip gluonic distributions, finding it to be saturated at the level of 80%. Finally, this work sets the stage for more complex LQCD studies of gluonic structure in the nucleon and in light nuclei where Δ(x,Q2) is an “exotic glue” observable probing gluons in a nucleus not associated with individual nucleons.},
doi = {10.1103/physrevd.94.014507},
journal = {Physical Review D},
number = 1,
volume = 94,
place = {United States},
year = {2016},
month = {7}
}