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.
- 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. doi: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 = {Thu Feb 01 00:00:00 EST 2018},
month = {Thu Feb 01 00:00:00 EST 2018}
}
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Cited by: 7 works
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Figures / Tables:
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 »
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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.