A new dark sector antibaryon, denoted psi(D), could be produced in decays of B mesons. This Letter presents a search for B+ -> psi(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(psi 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. (BABAR Collaboration)

Search for Evidence of Baryogenesis and Dark Matter in B+→ψD+p Decays at BABAR / J. . Lees, V.P.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 131:20(2023 Nov 16), pp. 201801.1-201801.5. [10.1103/physrevlett.131.201801]

Search for Evidence of Baryogenesis and Dark Matter in B+→ψD+p Decays at BABAR

N. Neri;F. Palombo;F. Simonetto;
2023

Abstract

A new dark sector antibaryon, denoted psi(D), could be produced in decays of B mesons. This Letter presents a search for B+ -> psi(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(psi 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. (BABAR Collaboration)
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
16-nov-2023
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/1114955
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