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Title: Flavor diagonal tensor charges of the nucleon from ( 2 + 1 + 1 )-flavor lattice QCD

Abstract

Here, we present state-of-the-art results for the matrix elements of flavor diagonal tensor operators within the nucleon state. The calculation of the dominant connected contribution is done using 11 ensembles of gauge configurations generated by the MILC Collaboration using the highly improved staggered quark action with 2+1+1 dynamical flavors. The calculation of the disconnected contributions is done using seven (six) ensembles for the strange (light) quarks. These high-statistics simulations allowed us to address various systematic uncertainties. A simultaneous fit in the lattice spacing and the light-quark mass is used to extract the tensor charges in the continuum limit and at M π = 135 MeV. Results for the proton in the ¯¯MS scheme at 2 GeV are g u T = 0.784(28)(10), g d T = –0.204(11)(10) and g s T = –0.0027(16). Implications of these results for constraining the quark electric dipole moments and their contributions to the neutron electric dipole moment are discussed.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [2];  [3]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Michigan State Univ., East Lansing, MI (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program; USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
PNDME Collaboration
OSTI Identifier:
1481814
Alternate Identifier(s):
OSTI ID: 1482954; OSTI ID: 1484890
Report Number(s):
LA-UR-18-28007; BNL-209650-2018-JAAM
Journal ID: ISSN 2470-0010; PRVDAQ
Grant/Contract Number:  
89233218CNA000001; AC02-05CH11231; AC05-00OR22725; AC52-06NA25396; SC0012704
Resource Type:
Journal Article: Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Volume: 98; Journal Issue: 9; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Atomic; Nuclear and Particle Physics; Tensor charges; Lattice QCD; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; lattice; QCD; nucleon; mass; quark; flavors; tensor; algorithm; matrix; operators

Citation Formats

Gupta, Rajan, Yoon, Boram, Bhattacharya, Tanmoy, Cirigliano, Vincenzo, Jang, Yong -Chull, and Lin, Huey -Wen. Flavor diagonal tensor charges of the nucleon from (2+1+1)-flavor lattice QCD. United States: N. p., 2018. Web. doi:10.1103/PhysRevD.98.091501.
Gupta, Rajan, Yoon, Boram, Bhattacharya, Tanmoy, Cirigliano, Vincenzo, Jang, Yong -Chull, & Lin, Huey -Wen. Flavor diagonal tensor charges of the nucleon from (2+1+1)-flavor lattice QCD. United States. doi:10.1103/PhysRevD.98.091501.
Gupta, Rajan, Yoon, Boram, Bhattacharya, Tanmoy, Cirigliano, Vincenzo, Jang, Yong -Chull, and Lin, Huey -Wen. Mon . "Flavor diagonal tensor charges of the nucleon from (2+1+1)-flavor lattice QCD". United States. doi:10.1103/PhysRevD.98.091501.
@article{osti_1481814,
title = {Flavor diagonal tensor charges of the nucleon from (2+1+1)-flavor lattice QCD},
author = {Gupta, Rajan and Yoon, Boram and Bhattacharya, Tanmoy and Cirigliano, Vincenzo and Jang, Yong -Chull and Lin, Huey -Wen},
abstractNote = {Here, we present state-of-the-art results for the matrix elements of flavor diagonal tensor operators within the nucleon state. The calculation of the dominant connected contribution is done using 11 ensembles of gauge configurations generated by the MILC Collaboration using the highly improved staggered quark action with 2+1+1 dynamical flavors. The calculation of the disconnected contributions is done using seven (six) ensembles for the strange (light) quarks. These high-statistics simulations allowed us to address various systematic uncertainties. A simultaneous fit in the lattice spacing and the light-quark mass is used to extract the tensor charges in the continuum limit and at Mπ = 135 MeV. Results for the proton in the ¯¯MS scheme at 2 GeV are guT = 0.784(28)(10), gdT = –0.204(11)(10) and gsT = –0.0027(16). Implications of these results for constraining the quark electric dipole moments and their contributions to the neutron electric dipole moment are discussed.},
doi = {10.1103/PhysRevD.98.091501},
journal = {Physical Review D},
number = 9,
volume = 98,
place = {United States},
year = {Mon Nov 12 00:00:00 EST 2018},
month = {Mon Nov 12 00:00:00 EST 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevD.98.091501

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