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Title: Nuclear axial currents in chiral effective field theory

Abstract

Two-nucleon axial charge and current operators are derived in chiral effective field theory up to one loop. The derivation is based on time-ordered perturbation theory and accounts for cancellations between the contributions of irreducible diagrams and the contributions owing to nonstatic corrections from energy denominators of reducible diagrams. Ultraviolet divergencies associated with the loop corrections are isolated in dimensional regularization. The resulting axial current is finite and conserved in the chiral limit, while the axial charge requires renormalization. As a result, a complete set of contact terms for the axial charge up to the relevant order in the power counting is constructed.

Authors:
 [1];  [2];  [3];  [4];  [5]
  1. Old Dominion Univ., Norfolk, VA (United States)
  2. Univ. of Salento and INFN-Lecce, Lecce (Italy)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Univ. of South Carolina, Columbia, SC (United States)
  4. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Old Dominion Univ., Norfolk, VA (United States)
  5. INFN-Pisa, Pisa (Italy)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1237076
Alternate Identifier(s):
OSTI ID: 1234301; OSTI ID: 1248905
Report Number(s):
JLAB-THY-15-2139; DOE/OR/23177-3557; arXiv:1509.07039; LA-UR-15-27549
Journal ID: ISSN 2469-9985; PRVCAN
Grant/Contract Number:  
AC05-06OR23177; AC52-06NA25396; PHY1068305; PHY-1068305
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 93; Journal Issue: 1; Journal ID: ISSN 2469-9985
Publisher:
APS
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Baroni, Alessandro, Girlanda, Luca, Pastore, Saori, Schiavilla, Rocco, and Viviani, Michele. Nuclear axial currents in chiral effective field theory. United States: N. p., 2016. Web. doi:10.1103/PhysRevC.93.015501.
Baroni, Alessandro, Girlanda, Luca, Pastore, Saori, Schiavilla, Rocco, & Viviani, Michele. Nuclear axial currents in chiral effective field theory. United States. doi:10.1103/PhysRevC.93.015501.
Baroni, Alessandro, Girlanda, Luca, Pastore, Saori, Schiavilla, Rocco, and Viviani, Michele. Mon . "Nuclear axial currents in chiral effective field theory". United States. doi:10.1103/PhysRevC.93.015501. https://www.osti.gov/servlets/purl/1237076.
@article{osti_1237076,
title = {Nuclear axial currents in chiral effective field theory},
author = {Baroni, Alessandro and Girlanda, Luca and Pastore, Saori and Schiavilla, Rocco and Viviani, Michele},
abstractNote = {Two-nucleon axial charge and current operators are derived in chiral effective field theory up to one loop. The derivation is based on time-ordered perturbation theory and accounts for cancellations between the contributions of irreducible diagrams and the contributions owing to nonstatic corrections from energy denominators of reducible diagrams. Ultraviolet divergencies associated with the loop corrections are isolated in dimensional regularization. The resulting axial current is finite and conserved in the chiral limit, while the axial charge requires renormalization. As a result, a complete set of contact terms for the axial charge up to the relevant order in the power counting is constructed.},
doi = {10.1103/PhysRevC.93.015501},
journal = {Physical Review C},
number = 1,
volume = 93,
place = {United States},
year = {2016},
month = {1}
}

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Cited by: 15 works
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