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

Du, Yong and Freitas, Ayres and Patel, Hiren H. and Ramsey-Musolf, Michael J. (2021) Parity-Violating Møller Scattering at Next-to-Next-to-Leading Order: Closed Fermion Loops. Physical Review Letters, 126 (13). Art. No. 131801. ISSN 0031-9007. doi:10.1103/physrevlett.126.131801.

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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.

Item Type:Article
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URLURL TypeDescription Paper
Du, Yong0000-0002-7595-2853
Patel, Hiren H.0000-0002-2582-6189
Ramsey-Musolf, Michael J.0000-0001-8110-2479
Alternate Title:Parity-Violating Møller Scattering at NNLO: Closed Fermion Loops
Additional Information:© 2021 Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. Received 17 January 2020; revised 22 July 2020; accepted 23 February 2021; published 29 March 2021. The authors would like to thank V. A. Smirnov and J. Erler for useful private communications. Y. D. is grateful to K. Kumar for his financial support at Fermilab and to PITT-PACC at the University of Pittsburgh for their hospitality during part of this work. A. F. has been supported in part by the National Science Foundation under Grant No. PHY-1820760. Y. D., H. H. P., and M. J. R.-M. were supported in part under U.S. Department of Energy Contract No. DE-SC0011095. H. H. P. was additionally supported in part by U.S. Department of Energy Award No. DE-SC0010107.
Funding AgencyGrant Number
Department of Energy (DOE)DE-SC0011095
Department of Energy (DOE)DE-SC0010107
Issue or Number:13
Record Number:CaltechAUTHORS:20210419-131119701
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:108759
Deposited By: Tony Diaz
Deposited On:19 Apr 2021 21:06
Last Modified:19 Apr 2021 21:06

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