Probing baryon number with missing energy
- 1Theoretical Physics Department, CERN
- 2TU Dortmund University
- 3Universidad de Castilla-La Mancha
Abstract
A bstract : Quark portal interactions qqqN with a light singlet fermion N make baryon number testable through missing transverse energy (MET). We find that present LHC data constrain scales up to 10 TeV (MET plus jet), 8 TeV (MET plus top) and 11 TeV (MET plus bjet). With increasing mass, or larger portal couplings, N becomes less long-lived, and gives clean displaced vertex signatures, which encourage dedicated searches. We also narrow down viable mesogenesis models with color triplet scalars to a mass range ~ y · 3 TeV (with charm) and ~ y · 5 TeV (charmless) couplings y to b and lighter quarks, a window that can be scrutinized by HL-LHC. Interactions also induce rare decays of type baryon (meson) to meson (baryon) plus invisible, which complement high- p T searches and can prove baryon number violation. We explore charm decays Λ c → ( π , K ) + invisible. Their branching ratios are subject to sizable hadronic uncertainties and require high luminosity flavor facilities such as a Tera-Z facility (FCC-ee, CEPC). Branching ratios of top quarks into one or two b -jets plus N can reach few×10 ⁻⁶ .
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BibTeX
@article{hiller2026probing,
title = {{Probing baryon number with missing energy}},
author = {Gudrun Hiller and Antonio Rodríguez-Sánchez and Daniel Wendler},
journal = {Journal of High Energy Physics},
year = {2026},
month = oct,
doi = {10.1007/jhep10(2026)225},
url = {https://link.springer.com/article/10.1007/JHEP10(2026)225},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Probing baryon number with missing energy
AU - Gudrun Hiller
AU - Antonio Rodríguez-Sánchez
AU - Daniel Wendler
PY - 2026
DA - 2026/10/22
JO - Journal of High Energy Physics
DO - 10.1007/jhep10(2026)225
UR - https://link.springer.com/article/10.1007/JHEP10(2026)225
AB - A bstract : Quark portal interactions qqqN with a light singlet fermion N make baryon number testable through missing transverse energy (MET). We find that present LHC data constrain scales up to 10 TeV (MET plus jet), 8 TeV (MET plus top) and 11 TeV (MET plus bjet). With increasing mass, or larger portal couplings, N becomes less long-lived, and gives clean displaced vertex signatures, which encourage dedicated searches. We also narrow down viable mesogenesis models with color triplet scalars to a mass range ~ y · 3 TeV (with charm) and ~ y · 5 TeV (charmless) couplings y to b and lighter quarks, a window that can be scrutinized by HL-LHC. Interactions also induce rare decays of type baryon (meson) to meson (baryon) plus invisible, which complement high- p T searches and can prove baryon number violation. We explore charm decays Λ c → ( π , K ) + invisible. Their branching ratios are subject to sizable hadronic uncertainties and require high luminosity flavor facilities such as a Tera-Z facility (FCC-ee, CEPC). Branching ratios of top quarks into one or two b -jets plus N can reach few×10 ⁻⁶ .
SN - 1029-8479
ER -