A new dark sector antibaryon, denoted ψD, could be produced in decays of B mesons. This Letter presents a search for B+→ψD+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<4.3 GeV/c2. The result is also reinterpreted to provide the first limits on a supersymmetric model with R-parity violation and a light neutralino.

Lees, J.P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2023). Search for Evidence of Baryogenesis and Dark Matter in B+ →ψ D+ p Decays at B A B AR. PHYSICAL REVIEW LETTERS, 131(20), 1-8 [10.1103/PhysRevLett.131.201801].

Search for Evidence of Baryogenesis and Dark Matter in B+ →ψ D+ p Decays at B A B AR

Patrignani C.;
2023

Abstract

A new dark sector antibaryon, denoted ψD, could be produced in decays of B mesons. This Letter presents a search for B+→ψD+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<4.3 GeV/c2. The result is also reinterpreted to provide the first limits on a supersymmetric model with R-parity violation and a light neutralino.
2023
Lees, J.P., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2023). Search for Evidence of Baryogenesis and Dark Matter in B+ →ψ D+ p Decays at B A B AR. PHYSICAL REVIEW LETTERS, 131(20), 1-8 [10.1103/PhysRevLett.131.201801].
Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Brown, D. N.; Kolomensky, Y. G.; Fritsch, M.; Koch, H.; Cheaib, R.; Heart...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1002542
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