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Title: Parity-Violating Møller Scattering at Next-to-Next-to-Leading Order: Closed Fermion Loops

Journal Article · · Physical Review Letters
ORCiD logo [1];  [2];  [3];  [4]
  1. Univ. of Massachusetts, Amherst, MA (United States)
  2. Univ. of Pittsburgh, PA (United States)
  3. Univ. of California, Santa Cruz, CA (United States)
  4. Shanghai Jiao Tong Univ. (China); Univ. of Massachusetts, Amherst, MA (United States); California Institute of Technology (CalTech), Pasadena, CA (United States)
+ Show Author Affiliations

A complete, gauge-invariant computation of two-loop virtual corrections involving closed fermion loops to the polarized Møller scattering asymmetry is presented. The set of contributions involving two closed fermion loops and the set involving one closed fermion loop are numerically similar in magnitude to the one-loop bosonic corrections and yield an overall correction of 1.3% relative to the tree level asymmetry. We estimate sizes of the remaining two-loop contributions and discuss implications for the upcoming MOLLER (Measurement of a Lepton-Lepton Electroweak Reaction) experiment.

Research Organization:
Univ. of California, Santa Cruz, CA (United States); Univ. of Massachusetts, Amherst, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC); National Science Foundation (NSF); USDOE
Grant/Contract Number:
SC0010107; SC0011095; PHY-1820760
OSTI ID:
1773192
Alternate ID(s):
OSTI ID: 1851327
Journal Information:
Physical Review Letters, Vol. 126, Issue 13; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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