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Title: Minimally nonlocal nucleon-nucleon potentials with chiral two-pion exchange including Δ resonances

Abstract

In this study, we construct a coordinate-space chiral potential, including Δ-isobar intermediate states in its two-pion-exchange component up to order Q3 (Q denotes generically the low momentum scale). The contact interactions entering at next-to-leading and next-to-next-to-next-to-leading orders (Q2 and Q4, respectively) are rearranged by Fierz transformations to yield terms at most quadratic in the relative momentum operator of the two nucleons. The low-energy constant multiplying these contact interactions are fitted to the 2013 Granada database, consisting of 2309 pp and 2982 np data (including, respectively, 148 and 218 normalizations) in the laboratory-energy range 0–300 MeV. For the total 5291 $pp$ and $np$ data in this range, we obtain a Χ2 /datum of roughly 1.3 for a set of three models characterized by long- and short-range cutoffs, RL and RS respectively, ranging from (RL,RS)=(1.2,0.8) fm down to (0.8,0.6) fm. The long-range (short-range) cutoff regularizes the one- and two-pion exchange (contact) part of the potential.

Authors:
 [1];  [2];  [3];  [4];  [4];  [4]
  1. Old Dominion Univ., Norfolk, VA (United States)
  2. Univ. of Salento, Lecce (Italy); INFN-Leece, Leece (Italy)
  3. Old Dominion Univ., Norfolk, VA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  4. Univ. de Granada, Granada (Spain)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1171326
Alternate Identifier(s):
OSTI ID: 1181373
Report Number(s):
JLAB-THY-14-1993; DOE/OR/23177-3257; arXiv:1412.6446
Journal ID: ISSN 0556-2813; PRVCAN; ArticleNumber: 024003
Grant/Contract Number:  
AC05-06OR23177
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C, Nuclear Physics
Additional Journal Information:
Journal Volume: 91; Journal Issue: 2; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Piarulli, M., Girlanda, L., Schiavilla, R., Pérez, R. Navarro, Amaro, J. E., and Arriola, E. Ruiz. Minimally nonlocal nucleon-nucleon potentials with chiral two-pion exchange including Δ resonances. United States: N. p., 2015. Web. doi:10.1103/PhysRevC.91.024003.
Piarulli, M., Girlanda, L., Schiavilla, R., Pérez, R. Navarro, Amaro, J. E., & Arriola, E. Ruiz. Minimally nonlocal nucleon-nucleon potentials with chiral two-pion exchange including Δ resonances. United States. https://doi.org/10.1103/PhysRevC.91.024003
Piarulli, M., Girlanda, L., Schiavilla, R., Pérez, R. Navarro, Amaro, J. E., and Arriola, E. Ruiz. Thu . "Minimally nonlocal nucleon-nucleon potentials with chiral two-pion exchange including Δ resonances". United States. https://doi.org/10.1103/PhysRevC.91.024003. https://www.osti.gov/servlets/purl/1171326.
@article{osti_1171326,
title = {Minimally nonlocal nucleon-nucleon potentials with chiral two-pion exchange including Δ resonances},
author = {Piarulli, M. and Girlanda, L. and Schiavilla, R. and Pérez, R. Navarro and Amaro, J. E. and Arriola, E. Ruiz},
abstractNote = {In this study, we construct a coordinate-space chiral potential, including Δ-isobar intermediate states in its two-pion-exchange component up to order Q3 (Q denotes generically the low momentum scale). The contact interactions entering at next-to-leading and next-to-next-to-next-to-leading orders (Q2 and Q4, respectively) are rearranged by Fierz transformations to yield terms at most quadratic in the relative momentum operator of the two nucleons. The low-energy constant multiplying these contact interactions are fitted to the 2013 Granada database, consisting of 2309 pp and 2982 np data (including, respectively, 148 and 218 normalizations) in the laboratory-energy range 0–300 MeV. For the total 5291 $pp$ and $np$ data in this range, we obtain a Χ2 /datum of roughly 1.3 for a set of three models characterized by long- and short-range cutoffs, RL and RS respectively, ranging from (RL,RS)=(1.2,0.8) fm down to (0.8,0.6) fm. The long-range (short-range) cutoff regularizes the one- and two-pion exchange (contact) part of the potential.},
doi = {10.1103/PhysRevC.91.024003},
journal = {Physical Review C, Nuclear Physics},
number = 2,
volume = 91,
place = {United States},
year = {Thu Feb 26 00:00:00 EST 2015},
month = {Thu Feb 26 00:00:00 EST 2015}
}

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