Leptonic scalars at the LHC
Abstract
We explore the collider prospects of neutrino non-standard interaction with a Standard Model (SM) gauge-singlet leptonic scalar ϕ carrying two units of lepton-number-charge. These leptonic scalars are forbidden from interacting with the SM fermions at the renormalizable level and, if one allows for higher-dimensional operators, couple predominantly to SM neutrinos. For masses at or below the electroweak scale, ϕ decays exclusively into neutrinos. Its characteristic production signature at hadron collider experiments like the LHC would be via the vector boson fusion process and leads to same-sign dileptons, two forward jets in opposite hemispheres, and missing transverse energy, i.e.,$$$$ pp\to {\mathrm{\ell}}_{\alpha}^{\pm }{\mathrm{\ell}}_{\beta}^{\pm } jj+{E}_T^{\mathrm{miss}}\left(\alpha, \beta =e,\mu, \tau \right) $$$$ . Exploiting the final states of electrons and muons, we estimate, for the first time, the sensitivity of the LHC to these lepton-number-charged scalars. We show that the LHC sensitivity is largely complementary to that of low-energy precision measurements of the decays of charged leptons, charged mesons,W,Zand the SM Higgs boson, as well as the neutrino beam experiments like MINOS, and searches for neutrino self-interactions at IceCube and in cosmological observations. For ϕ mass larger than roughly 10 GeV, our projected LHC sensitivity would surpass all existing bounds.
- Authors:
-
- Northwestern Univ., Evanston, IL (United States). Dept. of Physics and Astronomy
- Washington Univ., St. Louis, MO (United States). McDonnell Center for the Space Sciences. Dept. of Physics
- Texas A & M Univ., College Station, TX (United States). Dept. of Physics and Astronomy. Mitchell Inst. for Fundamental Physics and Astronomy
- Univ. of Hawaii, Honolulu, HI (United States). Dept. of Physics and Astronomy
- Univ. of Pittsburgh, PA (United States). Dept. of Physics and Astronomy. Pittsburgh Particle Physics, Astrophysics, and Cosmology Center
- Publication Date:
- Research Org.:
- Univ. of Wisconsin, Madison, WI (United States); Northwestern Univ., Evanston, IL (United States); Univ. of Hawaii, Honolulu, HI (United States); Texas A & M Univ., College Station, TX (United States); Washington Univ., St. Louis, MO (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1800825
- Alternate Identifier(s):
- OSTI ID: 1598865
- Grant/Contract Number:
- FG02-95ER40896; SC0010143; SC0010504; SC0010813; SC0017987; AC02-07CH11359
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of High Energy Physics (Online)
- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2020; Journal Issue: 7; Journal ID: ISSN 1029-8479
- Publisher:
- Springer Berlin
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Physics; Neutrino Self-interactions; Leptonic Scalars; Large Hadron Collider; physics; neutrino self-interactions; leptonic scalars; large hadron collider
Citation Formats
de Gouvêa, André, Dev, P. S. Bhupal, Dutta, Bhaskar, Ghosh, Tathagata, Han, Tao, and Zhang, Yongchao. Leptonic scalars at the LHC. United States: N. p., 2020.
Web. doi:10.1007/jhep07(2020)142.
de Gouvêa, André, Dev, P. S. Bhupal, Dutta, Bhaskar, Ghosh, Tathagata, Han, Tao, & Zhang, Yongchao. Leptonic scalars at the LHC. United States. https://doi.org/10.1007/jhep07(2020)142
de Gouvêa, André, Dev, P. S. Bhupal, Dutta, Bhaskar, Ghosh, Tathagata, Han, Tao, and Zhang, Yongchao. Tue .
"Leptonic scalars at the LHC". United States. https://doi.org/10.1007/jhep07(2020)142. https://www.osti.gov/servlets/purl/1800825.
@article{osti_1800825,
title = {Leptonic scalars at the LHC},
author = {de Gouvêa, André and Dev, P. S. Bhupal and Dutta, Bhaskar and Ghosh, Tathagata and Han, Tao and Zhang, Yongchao},
abstractNote = {We explore the collider prospects of neutrino non-standard interaction with a Standard Model (SM) gauge-singlet leptonic scalar ϕ carrying two units of lepton-number-charge. These leptonic scalars are forbidden from interacting with the SM fermions at the renormalizable level and, if one allows for higher-dimensional operators, couple predominantly to SM neutrinos. For masses at or below the electroweak scale, ϕ decays exclusively into neutrinos. Its characteristic production signature at hadron collider experiments like the LHC would be via the vector boson fusion process and leads to same-sign dileptons, two forward jets in opposite hemispheres, and missing transverse energy, i.e.,$$ pp\to {\mathrm{\ell}}_{\alpha}^{\pm }{\mathrm{\ell}}_{\beta}^{\pm } jj+{E}_T^{\mathrm{miss}}\left(\alpha, \beta =e,\mu, \tau \right) $$pp→ℓα±ℓβ±jj+ETmissαβ=eμτ. Exploiting the final states of electrons and muons, we estimate, for the first time, the sensitivity of the LHC to these lepton-number-charged scalars. We show that the LHC sensitivity is largely complementary to that of low-energy precision measurements of the decays of charged leptons, charged mesons,W,Zand the SM Higgs boson, as well as the neutrino beam experiments like MINOS, and searches for neutrino self-interactions at IceCube and in cosmological observations. For ϕ mass larger than roughly 10 GeV, our projected LHC sensitivity would surpass all existing bounds.},
doi = {10.1007/jhep07(2020)142},
journal = {Journal of High Energy Physics (Online)},
number = 7,
volume = 2020,
place = {United States},
year = {Tue Jul 21 00:00:00 EDT 2020},
month = {Tue Jul 21 00:00:00 EDT 2020}
}
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