The first search for the rare radiative decay Ξb− → Ξ− γ is performed using data collected by the LHCb experiment in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb^−1. The Ξb− → Ξ− J/ψ channel is used as normalization. No Ξb− → Ξ− γ signal is found and an upper limit of B(Ξb− → Ξ− γ) < 1.3 × 10^−4 at 95% confidence level is obtained.
Search for the Radiative Ξb− → Ξ− γ Decay
Calabrese, R.;Capriotti, L.;Couturier, B.;Fiorini, M.;Franzoso, E.;Giugliano, C.;Guarise, M.;Kotriakhova, S.;Luppi, E.;Neri, I.;Okamura, S.;Pappalardo, L. L.;Passalacqua, B.;Tomassetti, L.;
2022
Abstract
The first search for the rare radiative decay Ξb− → Ξ− γ is performed using data collected by the LHCb experiment in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb^−1. The Ξb− → Ξ− J/ψ channel is used as normalization. No Ξb− → Ξ− γ signal is found and an upper limit of B(Ξb− → Ξ− γ) < 1.3 × 10^−4 at 95% confidence level is obtained.File in questo prodotto:
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2022-AR-04-Search_for_the_Radiative_Xibm_to_Xim_gamma_Decay-JHEP.pdf
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