Lattice QCD calculations of nucleon transverse momentum-dependent parton distributions (TMDs) at 170 MeV pION mass

M. Engelhardt; B. Musch; T. Bhattacharya; R. Gupta; P. Hägler; S. Krieg; J. Negele; A. Pochinsky; S. Syritsyn; B. Yoon

Lattice QCD calculations of nucleon transverse momentum-dependent parton distributions (TMDs) at 170 MeV pION mass

M. Engelhardt
, B. Musch
, T. Bhattacharya
, R. Gupta
, P. Hägler
, S. Krieg
, J. Negele
, A. Pochinsky
, S. Syritsyn
, B. Yoon

Physics and Astronomy

New Mexico State University
University of Regensburg
Los Alamos National Laboratory Theoretical Division
University of Wuppertal
Jülich Research Centre
Massachusetts Institute of Technology

Research output: Contribution to journal › Conference article › peer-review

Abstract

An exploration of nucleon TMD observables at a substantially lower pION mass, 170MeV, than used in previous lattice TMD calculations is presented. On a corresponding RBC/UKQCD domain wall fermion ensemble, TMDs are extracted fromnucleonmatrix elements of a bilocal quark operator containing a staple-shaped gauge link. Appropriate TMD ratios are constructed to cancel divergences associated with the gauge link. In particular, results associated with the time-reversal odd Sivers effect and with the quark transversity are reported. They are compared with previous domain wall fermion calculations at 297MeV pION mass with a view to exploring whether these observables vary strongly as a function of pION mass in the chiral regime.

Original language	English
Article number	117
Journal	Proceedings of Science
Volume	14-18-July-2015
State	Published - 2015
Event	33rd International Symposium on Lattice Field Theory, LATTICE 2015 - Kobe, Japan Duration: Jul 14 2015 → Jul 18 2015

Cite this

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title = "Lattice QCD calculations of nucleon transverse momentum-dependent parton distributions (TMDs) at 170 MeV pION mass",

abstract = "An exploration of nucleon TMD observables at a substantially lower pION mass, 170MeV, than used in previous lattice TMD calculations is presented. On a corresponding RBC/UKQCD domain wall fermion ensemble, TMDs are extracted fromnucleonmatrix elements of a bilocal quark operator containing a staple-shaped gauge link. Appropriate TMD ratios are constructed to cancel divergences associated with the gauge link. In particular, results associated with the time-reversal odd Sivers effect and with the quark transversity are reported. They are compared with previous domain wall fermion calculations at 297MeV pION mass with a view to exploring whether these observables vary strongly as a function of pION mass in the chiral regime.",

author = "M. Engelhardt and B. Musch and T. Bhattacharya and R. Gupta and P. H{\"a}gler and S. Krieg and J. Negele and A. Pochinsky and S. Syritsyn and B. Yoon",

year = "2015",

language = "English",

volume = "14-18-July-2015",

journal = "Proceedings of Science",

issn = "1824-8039",

note = "33rd International Symposium on Lattice Field Theory, LATTICE 2015 ; Conference date: 14-07-2015 Through 18-07-2015",

}

TY - JOUR

T1 - Lattice QCD calculations of nucleon transverse momentum-dependent parton distributions (TMDs) at 170 MeV pION mass

AU - Engelhardt, M.

AU - Musch, B.

AU - Bhattacharya, T.

AU - Gupta, R.

AU - Hägler, P.

AU - Krieg, S.

AU - Negele, J.

AU - Pochinsky, A.

AU - Syritsyn, S.

AU - Yoon, B.

PY - 2015

Y1 - 2015

N2 - An exploration of nucleon TMD observables at a substantially lower pION mass, 170MeV, than used in previous lattice TMD calculations is presented. On a corresponding RBC/UKQCD domain wall fermion ensemble, TMDs are extracted fromnucleonmatrix elements of a bilocal quark operator containing a staple-shaped gauge link. Appropriate TMD ratios are constructed to cancel divergences associated with the gauge link. In particular, results associated with the time-reversal odd Sivers effect and with the quark transversity are reported. They are compared with previous domain wall fermion calculations at 297MeV pION mass with a view to exploring whether these observables vary strongly as a function of pION mass in the chiral regime.

AB - An exploration of nucleon TMD observables at a substantially lower pION mass, 170MeV, than used in previous lattice TMD calculations is presented. On a corresponding RBC/UKQCD domain wall fermion ensemble, TMDs are extracted fromnucleonmatrix elements of a bilocal quark operator containing a staple-shaped gauge link. Appropriate TMD ratios are constructed to cancel divergences associated with the gauge link. In particular, results associated with the time-reversal odd Sivers effect and with the quark transversity are reported. They are compared with previous domain wall fermion calculations at 297MeV pION mass with a view to exploring whether these observables vary strongly as a function of pION mass in the chiral regime.

UR - https://www.scopus.com/pages/publications/84988598787

M3 - Conference article

AN - SCOPUS:84988598787

SN - 1824-8039

VL - 14-18-July-2015

JO - Proceedings of Science

JF - Proceedings of Science

M1 - 117

T2 - 33rd International Symposium on Lattice Field Theory, LATTICE 2015

Y2 - 14 July 2015 through 18 July 2015

ER -

Lattice QCD calculations of nucleon transverse momentum-dependent parton distributions (TMDs) at 170 MeV pION mass

Abstract

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