Study of B{sup {+-}} {yields} J/{psi} {pi}{sup {+-}} and B{sup {+-}} {yields} J/{psi} K{sup {+-}} Decays: Measurement of the Ratio of Branching Fractions and Search for Direct CP Violation

Fabozzi, F

doi:10.2172/826694

Title: Study of B{sup {+-}} {yields} J/{psi} {pi}{sup {+-}} and B{sup {+-}} {yields} J/{psi} K{sup {+-}} Decays: Measurement of the Ratio of Branching Fractions and Search for Direct CP Violation

Full Record
Other Related Research

Abstract

The authors study B{sup {+-}} {yields} J/{psi} {pi}{sup {+-}} and B{sup {+-}} {yields} J/{psi} K{sup {+-}} decays in a sample of about 89 million B{bar B} pairs collected with the BABAR detector at the PEP-II asymmetric B-factory at SLAC. They observe a signal of 244 {+-} 20 B{sup {+-}} {yields} J/{psi} {pi}{sup {+-}} events and determine the ratio {Beta}(B{sup {+-}} {yields} J/{psi} {pi}{sup {+-}})/{Beta}(B{sup {+-}} {yields} J/{psi} K{sup {+-}}) to be [5.37 {+-} 0.45(stat.) {+-} 0.11(syst.)]%. The charge asymmetries for the B{sup {+-}} {yields} J/{psi} {pi}{sup {+-}} and B{sup {+-}} {yields} J/{psi} K{sup {+-}} decays are determined to be {Alpha}{sub {pi}} = 0.123 {+-} 0.085(stat.) {+-} 0.004(syst.) and {Alpha}{sub K} = 0.030 {+-} 0.015(stat.) {+-} 0.006(syst.), respectively.

Authors:: Fabozzi, F

Publication Date:: Fri Jan 23 00:00:00 EST 2004

Research Org.:: SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Org.:: USDOE Office of Science (US)

OSTI Identifier:: 826694

Report Number(s):: SLAC-PUB-10318
TRN: US0404099

DOE Contract Number:: AC03-76SF00515

Resource Type:: Technical Report

Resource Relation:: Other Information: PBD: 23 Jan 2004

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; B PLUS MESONS; B MINUS MESONS; PARTICLE DECAY; PIONS PLUS; PIONS MINUS; KAONS PLUS; KAONS MINUS; BRANCHING RATIO; CP INVARIANCE; DATA

Citation Formats


                    Fabozzi, F. Study of B{sup {+-}} {yields} J/{psi} {pi}{sup {+-}} and B{sup {+-}} {yields} J/{psi} K{sup {+-}} Decays: Measurement of the Ratio of Branching Fractions and Search for Direct CP Violation.  United States: N. p., 2004. 
        Web.  doi:10.2172/826694.

Copy to clipboard


                    Fabozzi, F. Study of B{sup {+-}} {yields} J/{psi} {pi}{sup {+-}} and B{sup {+-}} {yields} J/{psi} K{sup {+-}} Decays: Measurement of the Ratio of Branching Fractions and Search for Direct CP Violation.  United States.  https://doi.org/10.2172/826694

Copy to clipboard


                    Fabozzi, F. 2004.  
        "Study of B{sup {+-}} {yields} J/{psi} {pi}{sup {+-}} and B{sup {+-}} {yields} J/{psi} K{sup {+-}} Decays: Measurement of the Ratio of Branching Fractions and Search for Direct CP Violation".  United States.  https://doi.org/10.2172/826694.  https://www.osti.gov/servlets/purl/826694.

Copy to clipboard


                    
@article{osti_826694,

  title        = {Study of B{sup {+-}} {yields} J/{psi} {pi}{sup {+-}} and B{sup {+-}} {yields} J/{psi} K{sup {+-}} Decays: Measurement of the Ratio of Branching Fractions and Search for Direct CP Violation},

  author       = {Fabozzi, F},

  abstractNote = {The authors study B{sup {+-}} {yields} J/{psi} {pi}{sup {+-}} and B{sup {+-}} {yields} J/{psi} K{sup {+-}} decays in a sample of about 89 million B{bar B} pairs collected with the BABAR detector at the PEP-II asymmetric B-factory at SLAC. They observe a signal of 244 {+-} 20 B{sup {+-}} {yields} J/{psi} {pi}{sup {+-}} events and determine the ratio {Beta}(B{sup {+-}} {yields} J/{psi} {pi}{sup {+-}})/{Beta}(B{sup {+-}} {yields} J/{psi} K{sup {+-}}) to be [5.37 {+-} 0.45(stat.) {+-} 0.11(syst.)]%. The charge asymmetries for the B{sup {+-}} {yields} J/{psi} {pi}{sup {+-}} and B{sup {+-}} {yields} J/{psi} K{sup {+-}} decays are determined to be {Alpha}{sub {pi}} = 0.123 {+-} 0.085(stat.) {+-} 0.004(syst.) and {Alpha}{sub K} = 0.030 {+-} 0.015(stat.) {+-} 0.006(syst.), respectively.},

  doi          = {10.2172/826694},

  url          = {https://www.osti.gov/biblio/826694},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Fri Jan 23 00:00:00 EST 2004},

  month        = {Fri Jan 23 00:00:00 EST 2004}

}

Copy to clipboard

Technical Report:

View Technical Report

https://doi.org/10.2172/826694

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

A Study of B{sup {+-}} {yields} J/{Psi}{pi}{sup {+-}} and B{sup {+-}} {yields} J/{Psi}K{sup {+-}} Decays: Measurement of the Ratio of Branching Fractions and Search for Direct CP-Violating Charge Asymmetries

Technical Report Fabozzi, Francesco

The authors have studied the B{sup {+-}} {yields} J/{psi}{pi}{sup {+-}} and B{sup {+-}} {yields} J/{psi}K{sup {+-}} decays using a 20.7 fb{sup -1} data set collected with the BABAR detector. They observe a signal of 51 {+-} 10 B{sup {+-}} {yields} J/{psi}{pi}{sup {+-}} events and determine the ratio {Beta}({sup {+-}} {yields} J/{psi}{pi}{sup {+-}})/{Beta}(B{sup {+-}} {yields} J/{psi}K{sup {+-}}) to be [3.91 {+-} 0.78(stat.) {+-} 0.19(syst.)]%. The CP-violating charge asymmetries for the B{sup {+-}} {yields} J/{psi}{pi}{sup {+-}} and B{sup {+-}} {yields} J/{psi}{sup {+-}}K{sup {+-}} decays are determined to be {Alpha}{sub {pi}} = 0.01 {+-} 0.22(stat.) {+-} 0.01(syst.) and {Alpha}{sub K} = 0.003 {+-}more » 0.030(stat.) {+-} 0.004(syst.).« less
https://doi.org/10.2172/799430

Full Text Available
A Study of B+/- --> J/psi pi+/- and B+/- --> J/psi K+/- Decays: Measurement of the Ratio of Branching Fractions and Search for Direct CP-Violating Charge Asymmetries

Technical Report Fabozzi, Francesco

We have studied the B{sup {+-}} {yields} J/{psi}{pi}{sup {+-}} and B{sup {+-}} {yields} J/{psi} K{sup {+-}} decays using a 20.7 fb{sup -1} data set collected with the BABAR detector. We observe a signal of 51 {+-} 10 B{sup {+-}} {yields} J/{psi}{pi}{sup {+-}} events and determine the ratio {Beta}(B{sup {+-}} {yields} J/{psi}{pi}{sup {+-}})/{Beta}(B{sup {+-}} {yields} J/{psi} K{sup {+-}}) to be [3.91 {+-} 0.78(stat.) {+-} 0.19(syst.)]%. The CP-violating charge asymmetries for the B{sup {+-}} {yields} J/{psi} {pi}{sup {+-}} and B{sup {+-}} {yields} J/{psi} K{sup {+-}} decays are determined to be {Alpha}{sub {pi}} = 0.01 {+-} 0.22(stat.) {+-} 0.01(syst.) and {Alpha}{sub K} =more »« less
https://doi.org/10.2172/799916

Full Text Available
Study of the K{sup +}{pi}{sup +}{pi}{sup -} final state in B{sup +}{yields}J/{psi}K{sup +}{pi}{sup +}{pi}{sup -} and B{sup +}{yields}{psi}'K{sup +}{pi}{sup +}{pi}{sup -}

Journal Article Guler, H; Aihara, H; Arinstein, K; ... - Physical Review. D, Particles Fields

Using 535x10{sup 6} B-meson pairs collected by the Belle detector at the KEKB e{sup +}e{sup -} collider, we measure branching fractions of (7.16{+-}0.10(stat){+-}0.60(syst)x10{sup -4} for B{sup +}{yields}J/{psi}K{sup +}{pi}{sup +}{pi}{sup -} and (4.31{+-}0.20(stat){+-}0.50(syst))x10{sup -4} for B{sup +}{yields}{psi}'K{sup +}{pi}{sup +}{pi}{sup -}. We perform amplitude analyses to determine the resonant structure of the K{sup +}{pi}{sup +}{pi}{sup -} final state in B{sup +}{yields}J/{psi}K{sup +}{pi}{sup +}{pi}{sup -} and B{sup +}{yields}{psi}'K{sup +}{pi}{sup +}{pi}{sup -} and find that the K{sub 1}(1270) is a prominent component of both decay modes. There is significant interference among the different intermediate states, which leads, in particular, to a striking distortion ofmore »« less
https://doi.org/10.1103/PHYSREVD.83.032005
Measurement of the ratio of branching fractions B(B{sup {+-}}{yields}J/{psi}{pi}{sup {+-}})/B(B{sup {+-}}{yields}J/{psi}K{sup {+-}})

Journal Article Abulencia, A; Budd, S; Ciobanu, C; ... - Physical Review. D, Particles Fields

We report a measurement of the ratio of branching fractions of the decays B{sup {+-}}{yields}J/{psi}{pi}{sup {+-}} and B{sup {+-}}{yields}J/{psi}K{sup {+-}} using the CDF II detector at the Fermilab Tevatron Collider. The signal from the Cabbibo-suppressed B{sup {+-}}{yields}J/{psi}{pi}{sup {+-}} decay is separated from B{sup {+-}}{yields}J/{psi}K{sup {+-}} using the B{sup {+-}}{yields}J/{psi}K{sup {+-}} invariant mass distribution and the kinematical differences of the hadron track in the two decay modes. From a sample of 220 pb{sup -1} of pp collisions at {radical}(s)=1.96 TeV, we observe 91{+-}15 B{sup {+-}}{yields}J/{psi}{pi}{sup {+-}} events together with 1883{+-}34 B{sup {+-}}{yields}J/{psi}K{sup {+-}} events. The ratio of branching fractions is foundmore »« less
https://doi.org/10.1103/PHYSREVD.79.112003
Measurement of b Hadron Lifetimes in Exclusive Decays Containing a J/{psi} in pp Collisions at {radical}(s)=1.96 TeV

Journal Article Aaltonen, T; Brucken, E; Devoto, F; ... - Physical Review Letters

We report on a measurement of b-hadron lifetimes in the fully reconstructed decay modes B{sup +}{yields}J/{psi}K{sup +}, B{sup 0}{yields}J/{psi}K{sup *}(892){sup 0}, B{sup 0}{yields}J/{psi}K{sub s}{sup 0}, and {Lambda}{sub b}{sup 0}{yields}J/{psi}{Lambda}{sup 0} using data corresponding to an integrated luminosity of 4.3 fb{sup -1}, collected by the CDF II detector at the Fermilab Tevatron. The measured lifetimes are {tau}(B{sup +})=[1.639{+-}0.009(stat){+-}0.009(syst)] ps, {tau}(B{sup 0})=[1.507{+-}0.010(stat){+-}0.008(syst)] ps, and {tau}({Lambda}{sub b}{sup 0})=[1.537{+-}0.045(stat){+-}0.014(syst)] ps. The lifetime ratios are {tau}(B{sup +})/{tau}(B{sup 0})=[1.088{+-}0.009(stat){+-}0.004(syst)] and {tau}({Lambda}{sub b}{sup 0})/{tau}(B{sup 0})=[1.020{+-}0.030(stat){+-}0.008(syst)]. These are the most precise determinations of these quantities from a single experiment.
https://doi.org/10.1103/PHYSREVLETT.106.121804

Similar Records