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Title: Local chiral potentials with Δ -intermediate states and the structure of light nuclei

Journal Article · · Physical Review C
 [1];  [2];  [3];  [4];  [1];  [5];  [1];  [4];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division
  2. Univ. of Salento, Lecce (Italy). Dept. of Mathematics and Physics; National Inst. for Nuclear Physics (INFN), Lecce (Italy)
  3. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States). Theory Center; Old Dominion Univ., Norfolk, VA (United States). Dept. of Physics
  4. National Inst. for Nuclear Physics (INFN), Pisa (Italy)
  5. National Inst. for Nuclear Physics (INFN), Pisa (Italy); Univ. of Pisa (Italy). Dept. of Physics

In this paper, we present fully local versions of the minimally nonlocal nucleon-nucleon potentials constructed in a previous paper [Piarulli et al., Phys. Rev. C 91, 024003 (2015)], and use them in hypersperical harmonics and quantum Monte Carlo calculations of ground and excited states of $^3$H, $^3$He, $^4$He, $^6$He, and $^6$Li nuclei. The long-range part of these local potentials includes one- and two-pion exchange contributions without and with $$\Delta$$-isobars in the intermediate states up to order $Q^3$ ($$Q$$ denotes generically the low momentum scale) in the chiral expansion, while the short-range part consists of contact interactions up to order $Q^4$. The low-energy constants multiplying these contact interactions are fitted to the 2013 Granada database in two different ranges of laboratory energies, either 0–125 MeV or 0–200 MeV, and to the deuteron binding energy and $nn$ singlet scattering length. Fits to these data are performed for three models characterized by long- and short-range cutoffs, $$R_{\rm L}$$ and $$R_{\rm S}$$, respectively, ranging from $$(R_{\rm L},R_{\rm S})=(1.2,0.8)$$ fm down to $(0.8,0.6)$ fm. Finally, the long-range (short-range) cutoff regularizes the one- and two-pion exchange (contact) part of the potential.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
AC02-06CH11357; AC05-06OR23177
OSTI ID:
1334251
Alternate ID(s):
OSTI ID: 1333591
Report Number(s):
JLAB-THY-16-2246; DOE/OR/23177-3825; arXiv:1606.06335
Journal Information:
Physical Review C, Vol. 94, Issue 5; ISSN 2469-9985
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 96 works
Citation information provided by
Web of Science

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