Search for Evidence of Baryogenesis and Dark Matter in B^{+}→ψ_{D}+p Decays at BABAR.



Lees, JP, Poireau, V ORCID: 0000-0002-4768-0256, Tisserand, V ORCID: 0000-0003-4916-0446, Grauges, E ORCID: 0000-0001-6571-4096, Palano, A ORCID: 0000-0002-6095-9593, Eigen, G, Brown, DN, Kolomensky, Yu G ORCID: 0000-0001-8496-9975, Fritsch, M, Koch, H
et al (show 211 more authors) (2023) Search for Evidence of Baryogenesis and Dark Matter in B^{+}→ψ_{D}+p Decays at BABAR. Physical review letters, 131 (20). 201801-.

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Abstract

A new dark sector antibaryon, denoted ψ_{D}, could be produced in decays of B mesons. This Letter presents a search for B^{+}→ψ_{D}+p (and the charge conjugate) decays in e^{+}e^{-} annihilations at 10.58 GeV, using data collected in the BABAR experiment. Data corresponding to an integrated luminosity of 398  fb^{-1} are analyzed. No evidence for a signal is observed. Branching fraction upper limits in the range from 10^{-7}-10^{-5} are obtained at 90% confidence level for masses of 1.0<m_{ψ_{D}}<4.3  GeV/c^{2}. The result is also reinterpreted to provide the first limits on a supersymmetric model with R-parity violation and a light neutralino.

Item Type: Article
Uncontrolled Keywords: <i>B<span class="sc">A</span>B<span class="sc">AR</span></i> Collaboration
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 16 Feb 2024 09:52
Last Modified: 16 Feb 2024 09:52
DOI: 10.1103/physrevlett.131.201801
Open Access URL: https://journals.aps.org/prl/pdf/10.1103/PhysRevLe...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3178685