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Title: Detecting a heavy neutrino electric dipole moment at the LHC

Abstract

The milliQan Collaboration has proposed to search for millicharged particles by looking for very weakly ionizing tracks in a detector installed in a cavern near the CMS experiment at the LHC. We note that another form of exotica can also yield weakly ionizing tracks. If a heavy neutrino has an electric dipole moment (EDM), then the milliQan experiment may be sensitive to it as well. In particular, writing the general dimension-5 operator for an EDM with a scale of a TeV and a one-loop factor, one finds a potential EDM as high as a few times 10-17 e-cm, and models exist where it is an order of magnitude higher. Redoing the Bethe calculation of ionization energy loss for an EDM, it is found that the milliQan detector is sensitive to EDMs as small as 10-17 e-cm. Using the production cross-section and analyzing the acceptance of the milliQan detector, we find the expected 95% exclusion and 3σ sensitivity over the range of neutrino masses from 5–1000 GeV for integrated luminosities of 300 and 3000 fb-1 at the LHC.

Authors:
; ORCiD logo
Publication Date:
Research Org.:
College of William and Mary, Williamsburg, VA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1437786
Alternate Identifier(s):
OSTI ID: 1499099
Grant/Contract Number:  
SC0018224
Resource Type:
Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 777 Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Sher, Marc, and Stevens, Justin R. Detecting a heavy neutrino electric dipole moment at the LHC. Netherlands: N. p., 2018. Web. https://doi.org/10.1016/j.physletb.2017.12.022.
Sher, Marc, & Stevens, Justin R. Detecting a heavy neutrino electric dipole moment at the LHC. Netherlands. https://doi.org/10.1016/j.physletb.2017.12.022
Sher, Marc, and Stevens, Justin R. Thu . "Detecting a heavy neutrino electric dipole moment at the LHC". Netherlands. https://doi.org/10.1016/j.physletb.2017.12.022.
@article{osti_1437786,
title = {Detecting a heavy neutrino electric dipole moment at the LHC},
author = {Sher, Marc and Stevens, Justin R.},
abstractNote = {The milliQan Collaboration has proposed to search for millicharged particles by looking for very weakly ionizing tracks in a detector installed in a cavern near the CMS experiment at the LHC. We note that another form of exotica can also yield weakly ionizing tracks. If a heavy neutrino has an electric dipole moment (EDM), then the milliQan experiment may be sensitive to it as well. In particular, writing the general dimension-5 operator for an EDM with a scale of a TeV and a one-loop factor, one finds a potential EDM as high as a few times 10-17 e-cm, and models exist where it is an order of magnitude higher. Redoing the Bethe calculation of ionization energy loss for an EDM, it is found that the milliQan detector is sensitive to EDMs as small as 10-17 e-cm. Using the production cross-section and analyzing the acceptance of the milliQan detector, we find the expected 95% exclusion and 3σ sensitivity over the range of neutrino masses from 5–1000 GeV for integrated luminosities of 300 and 3000 fb-1 at the LHC.},
doi = {10.1016/j.physletb.2017.12.022},
journal = {Physics Letters B},
number = C,
volume = 777,
place = {Netherlands},
year = {2018},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1016/j.physletb.2017.12.022

Citation Metrics:
Cited by: 1 work
Citation information provided by
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Figures / Tables:

Fig. 1. Fig. 1. : The expected 95% C.L. exclusion (solid) and 3σ sensitivity (dashed) for heavy neutrino EDM detection using the milliQan experimental setup at $\sqrt{s}$ = 14 TeV, assuming $L$ = 300 (3000) fb−1 integrated luminosity in black (blue). (For interpretation of the references to color in this figure legend,more » the reader is referred to the web version of this article.)« less

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Works referencing / citing this record:

Proton fixed-target scintillation experiment to search for millicharged dark matter
journal, July 2019


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