Axial-Current Matrix Elements in Light Nuclei from Lattice QCD

Conference · Thu Dec 01 00:00:00 EST 2016

OSTI ID:1362125

Savage, Martin ^[1]; Shanahan, Phiala E. ^[2]; Tiburzi, Brian C. ^[3]; Wagman, Michael L. ^[1]; Winter, Frank T. ^[4]; Beane, Silas ^[5]; Chang, Emmanuel ^[1]; Davoudi, Zohreh; Detmold, William ^[2]; Orginos, Konstantinos ^[6]

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1. Univ. of Washington, Seattle, WA (United States)
2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
3. Univ. of Maryland, College Park, MD (United States)
4. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
5. Univ. of New Hampshire, Durham, NH (United States)
6. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); College of William and Mary, Williamsburg, VA (United States)

I present results from the first lattice QCD calculations of axial-current matrix elements in light nuclei, performed by the NPLQCD collaboration. Precision calculations of these matrix elements, and the subsequent extraction of multi-nucleon axial-current operators, are essential in refining theoretical predictions of the proton-proton fusion cross section, neutrino-nucleus cross sections and $$\beta\beta$$-decay rates of nuclei. In addition, they are expected to shed light on the phenomenological quenching of $$g_A$$ that is required in nuclear many-body calculations.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1362125
• Report Number(s): JLAB-THY-16-2398; DOE/OR/23177-4061; arXiv:1611.00344; INT-PUB-16-039
• Resource Relation: Conference: ICHEP 2016, 3-10 August 2016, Chicago, IL
• Country of Publication: United States
• Language: English