Study of the B <sup>0</sup> → ρ(770)°K <sup>*</sup> (892) <sup>0</sup> decay with an amplitude analysis of B <sup>0</sup> → (π <sup>+</sup> π <sup>−</sup> )(K <sup>+</sup> π <sup>−</sup> ) decays



Aaij, R, Abellán Beteta, C, Adeva, B, Adinolfi, M, Aidala, CA, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J, Alessio, F
et al (show 90 more authors) (2019) Study of the B <sup>0</sup> → ρ(770)°K <sup>*</sup> (892) <sup>0</sup> decay with an amplitude analysis of B <sup>0</sup> → (π <sup>+</sup> π <sup>−</sup> )(K <sup>+</sup> π <sup>−</sup> ) decays. Journal of High Energy Physics, 2019 (5).

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Abstract

© 2019, The Author(s). An amplitude analysis of B 0 → (π + π − )(K + π − ) decays is performed in the two-body invariant mass regions 300 < m(π + π − ) < 1100 MeV/c 2 , accounting for the ρ 0 , ω, f 0 (500), f 0 (980) and f 0 (1370) resonances, and 750 < m(K + π − ) < 1200 MeV/c 2 , which is dominated by the K * (892) 0 meson. The analysis uses 3 fb −1 of proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The CP averages and asymmetries are measured for the magnitudes and phase differences of the con- tributing amplitudes. The CP-averaged longitudinal polarisation fractions of the vector-vector modes are found to be f˜ρK*0 = 0.164 ± 0.015 ± 0.022 and f˜ωK*0 = 0.68 ± 0.17 ± 0.16, and their CP asymmetries, AρK*0 = −0.62 ± 0.09 ± 0.09 and AωK*0 = −0.13 ± 0.27 ± 0.13, where the first uncertainty is statistical and the second systematic.[Figure not available: see fulltext.].

Item Type: Article
Depositing User: Symplectic Admin
Date Deposited: 15 Aug 2019 10:05
Last Modified: 26 Nov 2021 08:53
DOI: 10.1007/JHEP05(2019)026
Open Access URL: http://doi.org/10.1007/JHEP05(2019)026
URI: https://livrepository.liverpool.ac.uk/id/eprint/3051823