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Title: Tritium β decay in chiral effective field theory

Abstract

We evaluate the Fermi and Gamow-Teller (GT) matrix elements in tritium $$\beta$$-decay by including in the charge-changing weak current the corrections up to one loop recently derived in nuclear chiral effective field theory ($$\chi$$ EFT). The trinucleon wave functions are obtained from hyperspherical-harmonics solutions of the Schroedinger equation with two- and three-nucleon potentials corresponding to either $$\chi$$ EFT (the N3LO/N2LO combination) or meson-exchange phenomenology (the AV18/UIX combination). We find that contributions due to loop corrections in the axial current are, in relative terms, as large as (and in some cases, dominate) those from one-pion exchange, which nominally occur at lower order in the power counting. Furthermore, we also provide values for the low-energy constants multiplying the contact axial current and three-nucleon potential, required to reproduce the experimental GT matrix element and trinucleon binding energies in the N3LO/N2LO and AV18/UIX calculations.

Authors:
 [1];  [2];  [3];  [4];  [5];  [3]
  1. Old Dominion Univ., Norfolk, VA (United States)
  2. Univ. of Salento, Lecce (Italy); INFN-Lecce, Lecce (Italy)
  3. INFN-Pisa, Pisa (Italy)
  4. INFN-Pisa, Pisa (Italy); Univ. of Pisa, Pisa (Italy)
  5. Old Dominion Univ., Norfolk, VA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
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:
1302044
Alternate Identifier(s):
OSTI ID: 1298338
Report Number(s):
JLAB-THY-16-2233; DOE/OR/23177-3778; arXiv:1605.01620
Journal ID: ISSN 2469-9985; PRVCAN
Grant/Contract Number:  
AC05-06OR23177
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 94; Journal Issue: 2; Journal ID: ISSN 2469-9985
Publisher:
APS
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Baroni, A., Girlanda, L., Kievsky, A., Marcucci, L. E., Schiavilla, R., and Viviani, M. Tritium β decay in chiral effective field theory. United States: N. p., 2016. Web. doi:10.1103/PhysRevC.94.024003.
Baroni, A., Girlanda, L., Kievsky, A., Marcucci, L. E., Schiavilla, R., & Viviani, M. Tritium β decay in chiral effective field theory. United States. https://doi.org/10.1103/PhysRevC.94.024003
Baroni, A., Girlanda, L., Kievsky, A., Marcucci, L. E., Schiavilla, R., and Viviani, M. Thu . "Tritium β decay in chiral effective field theory". United States. https://doi.org/10.1103/PhysRevC.94.024003. https://www.osti.gov/servlets/purl/1302044.
@article{osti_1302044,
title = {Tritium β decay in chiral effective field theory},
author = {Baroni, A. and Girlanda, L. and Kievsky, A. and Marcucci, L. E. and Schiavilla, R. and Viviani, M.},
abstractNote = {We evaluate the Fermi and Gamow-Teller (GT) matrix elements in tritium $\beta$-decay by including in the charge-changing weak current the corrections up to one loop recently derived in nuclear chiral effective field theory ($\chi$ EFT). The trinucleon wave functions are obtained from hyperspherical-harmonics solutions of the Schroedinger equation with two- and three-nucleon potentials corresponding to either $\chi$ EFT (the N3LO/N2LO combination) or meson-exchange phenomenology (the AV18/UIX combination). We find that contributions due to loop corrections in the axial current are, in relative terms, as large as (and in some cases, dominate) those from one-pion exchange, which nominally occur at lower order in the power counting. Furthermore, we also provide values for the low-energy constants multiplying the contact axial current and three-nucleon potential, required to reproduce the experimental GT matrix element and trinucleon binding energies in the N3LO/N2LO and AV18/UIX calculations.},
doi = {10.1103/PhysRevC.94.024003},
journal = {Physical Review C},
number = 2,
volume = 94,
place = {United States},
year = {Thu Aug 18 00:00:00 EDT 2016},
month = {Thu Aug 18 00:00:00 EDT 2016}
}

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Cited by: 47 works
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Works referencing / citing this record:

Status and future of nuclear matrix elements for neutrinoless double-beta decay: a review
journal, March 2017


From response functions to cross sections in neutrino scattering off the deuteron and trinucleons
journal, December 2019


Momentum space treatment of inclusive neutrino scattering off the deuteron and trinucleons
journal, July 2018


Uncertainties in constraining low-energy constants from 3H $ \beta$β decay
journal, August 2017


Nuclear matter properties from local chiral interactions with $Δ$ isobar intermediate states
text, January 2016


Light-nuclei spectra from chiral dynamics
text, January 2017