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Title: Ab initio calculation of the $$np \to d ³$$ radiative capture process

Journal Article · · Physical Review Letters
 [1];  [1];  [2];  [3];  [4];  [1];  [5]
  1. Univ. of Washington, Seattle, WA (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  3. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  4. Univ. of Barcelona, Barcelona (Spain)
  5. The City College of New York, New York, NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)

In this study, lattice QCD calculations of two-nucleon systems are used to isolate the short-distance two-body electromagnetic contributions to the radiative capture process $$np \to d\gamma$$, and the photo-disintegration processes $$\gamma^{(\ast)} d \to np$$. In nuclear potential models, such contributions are described by phenomenological meson-exchange currents, while in the present work, they are determined directly from the quark and gluon interactions of QCD. Calculations of neutron-proton energy levels in multiple background magnetic fields are performed at two values of the quark masses, corresponding to pion masses of $$m_\pi \sim 450$$ and 806 MeV, and are combined with pionless nuclear effective field theory to determine these low-energy inelastic processes. Extrapolating to the physical pion mass, a cross section of $$\sigma^{lqcd}(np\to d\gamma)=332.4({\tiny \begin{array}{l}+5.4 \\ - 4.7\end{array}})\ mb$$ is obtained at an incident neutron speed of $$v=2,200\ m/s$$, consistent with the experimental value of $$\sigma^{expt}(np \to d\gamma) = 334.2(0.5)\ mb$$.

Research Organization:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Contributing Organization:
NPLQCD Collaboration
Grant/Contract Number:
OCI-1053575; PHY1206498; PHY12-05778; AC02-05CH11231; DOE DE-SC0013477; SC0010337-ER42045; FG02-04ER41302; FG02-00ER41132; AC05-00OR22725; SC0010495; AC05-06OR23177
OSTI ID:
1221536
Alternate ID(s):
OSTI ID: 1224626
Report Number(s):
JLAB-THY-15-2045; DOE/OR/23177-3346; arXiv:1505.02422; PRLTAO
Journal Information:
Physical Review Letters, Vol. 115, Issue 13; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 59 works
Citation information provided by
Web of Science

References (56)

The proton-thermal neutron capture cross section journal December 1965
Measurement of the p(n,γ)d reaction cross section between En = 100 and 350 keV journal May 2003
Measurement of 1 H ( n , γ ) 2 H reaction cross section at a comparable M 1 / E 1 strength journal December 1997
Photodisintegration of deuterium and big bang nucleosynthesis journal October 2003
H 2 ( γ , n ) absolute cross section at 2754 keV journal April 1989
First measurement of the near-threshold 2 H ( γ , n ) p analyzing power using a free-electron laser based γ -ray source journal May 2000
Low-energy photodisintegration of the deuteron and Big-Bang nucleosynthesis journal November 2003
Meson exchange effects in n + p → d + γ journal February 1972
Meson exchange currents in deuteron electro-disintegration journal December 1973
Radiative neutron capture on a proton at big-bang nucleosynthesis energies journal August 2006
Proton-proton fusion in effective field theory journal August 2001
Proton–proton fusion in effective field theory to fifth order journal November 2001
Proton–proton fusion in pionless effective theory journal October 2008
Near threshold proton–proton fusion in effective field theory journal March 2013
Proton-Proton Weak Capture in Chiral Effective Field Theory journal May 2013
Proton–proton fusion in lattice effective field theory journal February 2015
Neutrino-deuteron scattering in effective field theory at next-to-next-to-leading order journal February 2001
Nuclear σ terms and scalar-isoscalar WIMP-nucleus interactions from lattice QCD journal April 2014
The Effective Range of Nuclear Forces II. Photo-Disintegration of the Deuteron journal March 1950
The interaction effect in n-p capture journal December 1965
Precision calculation of cross section for big-bang nucleosynthesis journal October 2000
Perturbative calculation of the electromagnetic form factors of the deuteron journal February 1999
Two-nucleon systems from effective field theory journal November 1998
Effective field theory of short-range forces journal January 1999
More effective field theory for non-relativistic scattering journal June 1997
Rearranging pionless effective field theory journal November 2001
Electroweak matrix elements in the two-nucleon sector from lattice QCD journal October 2004
Nucleon-nucleon effective field theory without pions journal July 1999
Isoscalar M1 and E2 amplitudes in np→dγ journal October 1999
Elastic and inelastic neutrino–deuteron scattering in effective field theory journal August 2000
Constraints on two-body axial currents from reactor antineutrino–deuteron breakup reactions journal November 2002
Light nuclei and hypernuclei from quantum chromodynamics in the limit of SU(3) flavor symmetry journal February 2013
The spin-flavor dependence of nuclear forces from large-N QCD journal January 1996
Improved continuum limit lattice action for QCD with wilson fermions journal September 1985
On-shell improved lattice gauge theories journal March 1985
First results from 2 + 1 dynamical quark flavors on an anisotropic lattice: Light-hadron spectroscopy and setting the strange-quark mass journal February 2009
Nuclear correlation functions in lattice QCD journal June 2013
Nucleon-nucleon scattering parameters in the limit of SU(3) flavor symmetry journal August 2013
Magnetic Moments of Light Nuclei from Lattice Quantum Chromodynamics journal December 2014
Lattice Quantum-Chromodynamics Calculation of Some Baryon Magnetic Moments journal October 1982
The proton and neutron magnetic moments in lattice QCD journal October 1982
Baryon magnetic moments in the background field method journal October 2005
Magnetic polarizability of hadrons from lattice QCD in the background field method journal February 2006
Electromagnetic and spin polarizabilities in lattice QCD journal June 2006
Lattice calculation of the magnetic moments of Δ and Ω baryons with dynamical clover fermions journal March 2009
Extracting electric polarizabilities from lattice QCD journal May 2009
Extracting nucleon magnetic moments and electric polarizabilities from lattice QCD in background electric fields journal March 2010
Magnetic properties of the nucleon in a uniform background field journal February 2014
Magnetic polarizabilities of light mesons in SU ( 3 ) lattice gauge theory journal September 2015
A property of electric and magnetic flux in non-Abelian gauge theories journal January 1979
Deuteron and exotic two-body bound states from lattice QCD journal March 2012
Helium nuclei, deuteron, and dineutron in 2 + 1 flavor lattice QCD journal October 2012
Study of quark mass dependence of binding energy for light nuclei in 2 + 1 flavor lattice QCD journal July 2015
The theory of parity violation in few-nucleon systems journal September 2013
Effective Field Theory for Lattice Nuclei journal February 2015
The Chroma Software System for Lattice QCD journal March 2005

Cited By (7)

Ab initio alpha–alpha scattering journal December 2015
Sanity check for NN bound states in lattice QCD with Lüscher’s finite volume formula – Disclosing Symptoms of Fake Plateaux – journal January 2018
From effective field theories to effective density functionals in and beyond the mean field journal May 2016
Challenges in nuclear structure theory journal March 2016
Hadrons and nuclei journal November 2019
Possible pentaquarks with heavy quarks journal November 2016
Possible pentaquarks with heavy quarks text January 2015

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