Measurements of the S-wave fraction in B-0 -> K+ pi(-) mu(+) mu(-) decays and the B-0 -> K*(892)(0) mu(+) mu(-) differential branching fraction
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
A measurement of the differential branching fraction of the decay B0 → K∗(892)0μ+μ− is presented together with a determination of the S-wave fraction of the K+π− system in the decay B0 → K+π−μ+μ−. The analysis is based on pp-collision data corresponding to an integrated luminosity of 3 fb−1 collected with the LHCb experiment. The measurements are made in bins of the invariant mass squared of the dimuon system, q2. Precise theoretical predictions for the differential branching fraction of B0 → K∗(892)0μ+μ− decays are available for the q2 region 1.1 < q2< 6.0 GeV2/c4. In this q2 region, for the K+π− invariant mass range 796 < mKπ< 996 MeV/c2, the S-wave fraction of the K+π− system in B0 → K+π−μ+μ− decays is found to be
FS=0.101±0.017(stat)±0.009(syst),
FS=0.101±0.017(stat)±0.009(syst),
and the differential branching fraction of B0 → K∗(892)0μ+μ− decays is determined to be
dB/dq2=(0.392+0.020−0.019(stat)±0.010(syst)±0.027(norm))×10−7c4/GeV2.
dB/dq2=(0.392−0.019+0.020(stat)±0.010(syst)±0.027(norm))×10−7c4/GeV2.
The differential branching fraction measurements presented are the most precise to date and are found to be in agreement with Standard Model predictions.
FS=0.101±0.017(stat)±0.009(syst),
FS=0.101±0.017(stat)±0.009(syst),
and the differential branching fraction of B0 → K∗(892)0μ+μ− decays is determined to be
dB/dq2=(0.392+0.020−0.019(stat)±0.010(syst)±0.027(norm))×10−7c4/GeV2.
dB/dq2=(0.392−0.019+0.020(stat)±0.010(syst)±0.027(norm))×10−7c4/GeV2.
The differential branching fraction measurements presented are the most precise to date and are found to be in agreement with Standard Model predictions.
Date Issued
2016-11-08
Date Acceptance
2016-10-28
Citation
The Journal of High Energy Physics, 2016, 2016 (11)
ISSN
1029-8479
Publisher
Springer Verlag
Journal / Book Title
The Journal of High Energy Physics
Volume
2016
Issue
11
Copyright Statement
© 2016 The Authors. JHEP is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/).
Sponsor
Science and Technology Facilities Council (STFC)
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000388175800001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Grant Number
ST/N000242/1
Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
B physics
Hadron-Hadron scattering (experiments)
Rare decay
PHYSICS
MODEL
0105 Mathematical Physics
0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
0206 Quantum Physics
Nuclear & Particles Physics
Publication Status
Published
Article Number
ARTN 047