Journal of High Energy Physics > 2019 > 2019 > 6 > 1-28
Amplitude analysis of Bs0 → KS0K±π∓ decays
Source
Abstract
The first untagged decay-time-integrated amplitude analysis of Bs0 → KS0K±π∓ decays is performed using a sample corresponding to 3.0 fb−1 of pp collision data recorded with the LHCb detector during 2011 and 2012. The data are described with an amplitude model that contains contributions from the intermediate resonances K*(892)0,+, K2* (1430)0,+ and K0* (1430)0,+, and their charge conjugates. Measurements of the branching fractions of the decay modes Bs0 → K*(892)±K∓ and B s 0 → K * — 892 0 K 0 — $$ {B}_s^0\to \overset{\left(\hbox{---} \right)}{K^{*}}{(892)}^0\overset{\left(\hbox{---} \right)}{K^0} $$ are in agreement with, and more precise than, previous results. The decays Bs0 → K0* (1430)±K∓ and B s 0 → K 0 * — 1430 0 K 0 — $$ {B}_s^0\to \overset{\left(\hbox{---} \right)}{K_0^{*}}{(1430)}^0\overset{\left(\hbox{---} \right)}{K^0} $$ are observed for the first time, each with significance over 10 standard deviations.
Identifiers
journal e-ISSN : | 1029-8479 |
DOI | 10.1007/JHEP06(2019)114 |
Authors
The LHCb collaboration
B. Adeva
- Universidade de Santiago de Compostela, Instituto Galego de Física de Altas Enerxías (IGFAE), Santiago de Compostela, Spain