Angular moments of the decay Lambda(0)(b) -> Lambda mu(+)mu(-) at low hadronic recoil



Aaij, R, Adeva, B, Adinolfi, M, Aidala, CA, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J, Alessio, F, Alexander, M
et al (show 827 more authors) (2018) Angular moments of the decay Lambda(0)(b) -> Lambda mu(+)mu(-) at low hadronic recoil. JOURNAL OF HIGH ENERGY PHYSICS, 2018 (9).

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Abstract

An analysis of the angular distribution of the decay Λb0 → Λμ+μ− is presented, using data collected with the LHCb detector between 2011 and 2016 and corresponding to an integrated luminosity of approximately 5 fb−1. Angular observables are determined using a moment analysis of the angular distribution at low hadronic recoil, corresponding to the dimuon invariant mass squared range 15 < q2 < 20 GeV2/c4. The full basis of observables is measured for the first time. The lepton-side, hadron-side and combined forward-backward asymmetries of the decay are determined to beAFBℓ=−0.39±0.04(stat)±0.01(syst),AFBh=−0.30±0.05(stat)±0.02(syst),AFBℓh=+0.25±0.04(stat)±0.01(syst). The measurements are consistent with Standard Model predictions.[Figure not available: see fulltext.].

Item Type: Article
Uncontrolled Keywords: B physics, FCNC Interaction, Flavor physics, Hadron-Hadron scattering (experiments), Rare decay
Depositing User: Symplectic Admin
Date Deposited: 03 Dec 2018 10:00
Last Modified: 19 Jan 2023 01:10
DOI: 10.1007/JHEP09(2018)146
Open Access URL: http://doi.org/10.1007/JHEP09(2018)146
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3029309