Study of the B0 → ρ(770)°K*(892)0 decay with an amplitude analysis of B0 → (π+π−)(K+π−) decays

Study of the B0 → ρ(770)°K*(892)0 decay with an amplitude analysis of B0 → (π+π−)(K+π−) decays

Bibliographic Details
Parent link:	Journal of High Energy Physics Vol. 2019, iss. 5.— 2019.— [26, 30 p.]
Corporate Authors:	Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов, Национальный исследовательский Томский политехнический университет Инженерная школа информационных технологий и робототехники Отделение автоматизации и робототехники (ОАР)
Other Authors:	Aaij R. Roel, Beteta C. A. Carlos Abellan, Adeva B. Bernardo, Shapkin M. M. Mikhail Mikhaylovich, Panshin G. L. Gennady Leonidovich, Strokov S. A. Sergey Aleksandrovich
Summary:	Title screen An amplitude analysis of B0 → (π+π−)(K+π−) decays is performed in the two-body invariant mass regions 300 < m(π+π−) < 1100 MeV/c2, accounting for the ρ0, ω, f0(500), f0(980) and f0(1370) resonances, and 750 < m(K+π−) < 1200 MeV/c2, 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~0ρK∗f~ρK∗0 = 0.164 ± 0.015 ± 0.022 and f~0ωK∗f~ωK∗0 = 0.68 ± 0.17 ± 0.16, and their CP asymmetries, A0ρK∗AρK∗0 = −0.62 ± 0.09 ± 0.09 and A0ωK∗AωK∗0 = −0.13 ± 0.27 ± 0.13, where the first uncertainty is statistical and the second systematic.
Published:	2019
Subjects:	электронный ресурс труды учёных ТПУ B physics CP violation Hadron-Hadron scattering (experiments) Polarization
Online Access:	https://doi.org/10.1007/JHEP05(2019)026
Format:	Electronic Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663385

Internet

https://doi.org/10.1007/JHEP05(2019)026