skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Time-dependent analysis of B 0 K S 0 π - π + γ decays and studies of the K + π - π + system in B + K + π - π + γ decays

Journal Article · · Physical Review D
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less

We measure the time-dependent CP asymmetry in the radiative-penguin decay B 0 K S 0 π - π + γ , using a sample of 471×106 Υ(4S)→BB-events recorded with the BABAR detector at the PEP-II e+e- storage ring at SLAC. Using events with mKππ < 1.8 GeV/c2, we measure the branching fractions of B+→K+π-π+γ and B0→K0π-π+γ, the branching fractions of the kaonic resonances decaying to K+π-π+, as well as the overall branching fractions of the B+→ρ0K+γ, B+→K*0π+γ and S-wave B+→(Kπ)0*0π+γ components. For events from the ρ mass band, we measure the CP-violating parameters SKS0π+π-γ=0.14±0.25±0.03 and CKS0π+π-γ=-0.39±0.20-0.02+0.03, where the first uncertainties are statistical and the second are systematic. We extract from this measurement the time-dependent CP asymmetry related to the CP eigenstate ρ0KS0 and obtain SKS0ργ=-0.18±0.32-0.05+0.06, which provides information on the photon polarization in the underlying b→sγ transition.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Contributing Organization:
BABAR Collaboration
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1393038
Alternate ID(s):
OSTI ID: 1244305
Journal Information:
Physical Review D, Vol. 93, Issue 5; ISSN 2470-0010
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

References (30)

Observation of B + K 1 ( 1270 ) + γ journal March 2005
Finite-Width Corrections to the Vector-Meson-Dominance Prediction for ρ e + e journal July 1968
The BABAR detector
  • Aubert, B.; Bazan, A.; Boucham, A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 479, Issue 1 https://doi.org/10.1016/S0168-9002(01)02012-5
journal February 2002
Improved Measurement of C P Asymmetries in B 0 ( c c ¯ ) K 0 ( * ) Decays journal April 2005
Exclusive hadronic decays ofB mesons journal December 1990
Constraints on left-right symmetric models from the process b→sγ journal July 1994
: A statistical tool to unfold data distributions
  • Pivk, M.; Le Diberder, F. R.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 555, Issue 1-2 https://doi.org/10.1016/j.nima.2005.08.106
journal December 2005
The use of Multiple Measurements in Taxonomic Problems journal September 1936
The EvtGen particle decay simulation package journal April 2001
Review of Particle Physics journal August 2014
Finite mass corrections to leptonic decay constants in the heavy quark effective theory journal June 1994
Diffractive production of strange mesons at 63 GeV journal August 1981
Mixing-induced C P violation in B P 1 P 2 γ in search of clean new physics signals journal April 2005
Observation of Photon Polarization in the b s γ Transition journal April 2014
A study of K−π+ scattering in the reaction K−p→K−π+n at 11 GeV/c journal January 1988
Measurement of the Time-Dependent C P Asymmetries in B 0 K S 0 ρ 0 γ Decays journal December 2008
QCD sum rules in the effective heavy quark theory journal April 1992
Time-integrated luminosity recorded by the BABARdetector at the PEP-II<mml:math altimg="si0120.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd" xmlns:sa="http://www.elsevier.com/xml/common/struct-aff/dtd"><mml:msup><mml:mrow><mml:mi mathvariant="normal">e</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup><mml:msup><mml:mrow><mml:mi mathvariant="normal">e</mml:mi></mml:mrow><mml:mrow><mml:mo>-</mml:mo></mml:mrow></mml:msup></mml:math> collider
  • Lees, J. P.; Poireau, V.; Tisserand, V.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 726 https://doi.org/10.1016/j.nima.2013.04.029
journal October 2013
The BaBar detector: Upgrades, operation and performance
  • Aubert, B.; Barate, R.; Boutigny, D.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 729 https://doi.org/10.1016/j.nima.2013.05.107
journal November 2013
Study of the K + π + π final state in B + J / ψ K + π + π and B + ψ K + π + π journal February 2011
Measurement of Branching Fractions and Mass Spectra of B K π π γ journal May 2007
Updated Next-to-Next-to-Leading-Order QCD Predictions for the Weak Radiative B -Meson Decays journal June 2015
Time-dependent C P asymmetries in B 0 K s 0 π 0 γ transitions journal December 2006
Phenomenology of B s decays journal January 1994
Measurement of time-dependent C P asymmetry in B 0 K S 0 π 0 γ decays journal October 2008
Improved Measurement of C P Violation in Neutral B Decays to c c ¯ s journal October 2007
Mixing-Induced CP Asymmetries in Radiative B Decays in and beyond the Standard Model journal July 1997
Test of the chiral structure of the top-bottom charged current by the process b s γ journal June 1994
Observing direct CP violation in untagged B -meson decays journal February 2004
b s γ decay in SU ( 2 ) L × SU ( 2 ) R × U ( 1 ) extensions of the standard model journal June 1994

Cited By (3)

CP violation in the B system journal February 2017
Reexamining the photon polarization in B K π π γ journal July 2017
Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016 journal December 2017