Observation of the suppressed decay Λ<i><sub>b</sub></i><SUP>0</SUP> → <i>p</i>π<SUP>-</SUP> μ<SUP>+</SUP> μ<SUP>-</SUP>



Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G
et al (show 762 more authors) (2017) Observation of the suppressed decay Λ<i><sub>b</sub></i><SUP>0</SUP> → <i>p</i>π<SUP>-</SUP> μ<SUP>+</SUP> μ<SUP>-</SUP>. JOURNAL OF HIGH ENERGY PHYSICS, 2017 (4).

Access the full-text of this item by clicking on the Open Access link.
[thumbnail of admin] Atom XML (admin)
2017-05-12T11:11:31Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-12T12:11:20Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-12T13:11:18Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-12T14:11:19Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-12T15:11:18Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-12T16:11:19Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-12T17:11:14Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-12T18:11:18Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-12T19:11:18Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-12T20:11:18Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-12T21:11:17Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-12T22:11:17Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-12T23:14:33Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-13T00:11:36Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-13T01:11:29Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-13T02:11:17Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-13T03:11:18Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-13T04:13:29Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-13T05:11:16Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-13T06:11:21Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-13T07:11:21Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-13T08:11:21Z.atom - Unspecified

Download (0B)
[thumbnail of admin] Atom XML (admin)
2017-05-13T09:11:22Z.atom - Unspecified

Download (0B)

Abstract

The suppressed decay Λb0 → pπ−μ+μ−, excluding the J/ψ and ψ(2S) → μ+μ− resonances, is observed for the first time with a significance of 5.5 standard deviations. The analysis is performed with proton-proton collision data corresponding to an integrated luminosity of 3 fb−1 collected with the LHCb experiment. The Λb0 → pπ−μ+μ− branching fraction is measured relative to the Λb0 → J/ψ(→μ+μ−)pπ− branching fraction givingℬ(Λb0→pπ−μ+μ−)ℬ(Λb0→J/ψ(→μ+μ−)pπ−)=0.044±0.012±0.007, where the first uncertainty is statistical and the second is systematic. This is the first observation of a b → d transition in a baryonic decay.[Figure not available: see fulltext.]

Item Type: Article
Uncontrolled Keywords: B physics, Branching fraction, Flavour Changing Neutral Currents, Hadron-Hadron scattering (experiments), Rare decay
Depositing User: Symplectic Admin
Date Deposited: 04 May 2017 11:42
Last Modified: 07 Oct 2023 11:21
DOI: 10.1007/JHEP04(2017)029
Open Access URL: https://arxiv.org/pdf/1701.08705.pdf
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3007245