Amplitude analysis of Bs0 → KS0± π decays

The LHCb collaboration

Research output: Contribution to journalArticleResearchpeer-review

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 Bs0→K*(—)(892)0K0(—) are in agreement with, and more precise than, previous results. The decays Bs0 → K0*(1430)±K∓ and Bs0→K0*(—)(1430)0K0(—) are observed for the first time, each with significance over 10 standard deviations.
Original languageEnglish
Article number114
Number of pages28
JournalJournal of High Energy Physics
Volume2019
Issue number6
DOIs
Publication statusPublished - 2019
Externally publishedYes

Keywords

  • B physics
  • Branching fraction
  • CP violation
  • Flavor physics
  • Hadron-Hadron scattering (experiments)

Cite this

The LHCb collaboration. / Amplitude analysis of Bs0 → KS0± π decays. In: Journal of High Energy Physics. 2019 ; Vol. 2019, No. 6.
@article{bcfaaac4248c405787998455965d3532,
title = "Amplitude analysis of Bs0 → KS0 K ± π ∓ decays",
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 Bs0→K*(—)(892)0K0(—) are in agreement with, and more precise than, previous results. The decays Bs0 → K0*(1430)±K∓ and Bs0→K0*(—)(1430)0K0(—) are observed for the first time, each with significance over 10 standard deviations.",
keywords = "B physics, Branching fraction, CP violation, Flavor physics, Hadron-Hadron scattering (experiments)",
author = "Ulrik Egede and {The LHCb collaboration}",
year = "2019",
doi = "10.1007/JHEP06(2019)114",
language = "English",
volume = "2019",
journal = "Journal of High Energy Physics",
issn = "1029-8479",
publisher = "Springer-Verlag London Ltd.",
number = "6",

}

Amplitude analysis of Bs0 → KS0± π decays. / The LHCb collaboration.

In: Journal of High Energy Physics, Vol. 2019, No. 6, 114, 2019.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Amplitude analysis of Bs0 → KS0 K ± π ∓ decays

AU - Egede, Ulrik

AU - The LHCb collaboration

PY - 2019

Y1 - 2019

N2 - 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 Bs0→K*(—)(892)0K0(—) are in agreement with, and more precise than, previous results. The decays Bs0 → K0*(1430)±K∓ and Bs0→K0*(—)(1430)0K0(—) are observed for the first time, each with significance over 10 standard deviations.

AB - 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 Bs0→K*(—)(892)0K0(—) are in agreement with, and more precise than, previous results. The decays Bs0 → K0*(1430)±K∓ and Bs0→K0*(—)(1430)0K0(—) are observed for the first time, each with significance over 10 standard deviations.

KW - B physics

KW - Branching fraction

KW - CP violation

KW - Flavor physics

KW - Hadron-Hadron scattering (experiments)

U2 - 10.1007/JHEP06(2019)114

DO - 10.1007/JHEP06(2019)114

M3 - Article

VL - 2019

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 6

M1 - 114

ER -