SLAC National Accelerator Laboratory

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Showing 2005 · hep-exShow all

34 papers · 2 filters

hep-ex2005★ 13 cited

Measurements of the branching fractions and CP-asymmetries of B- --> D0_(CP) K- decays

The BABAR Collaboration, B. Aubert

We present a study of the decay B- --> D0_(CP) K- and its charge conjugate, where D0_(CP) is reconstructed in CP-even, CP-odd, and non-CP flavor eigenstates, based on a sample of 2…

hep-ex2005★ 10 cited

Search for rare quark-annihilation decays, B --> Ds(*) Phi

The BABAR Collaboration, B. Aubert

We report on searches for B- --> Ds- Phi and B- --> Ds*- Phi. In the context of the Standard Model, these decays are expected to be highly suppressed since they proceed through ann…

hep-ex2005

Measurements of the CKM Angle beta

Rainer Bartoldus

In this article I report on new and updated measurements of the CP-violating parameter beta (phi_1), which is related to the phase of the Cabibbo-Kobayashi-Maskawa (CKM) quark-mixi…

hep-ex2005

Studies of e+e- Collisions with a Hard Initial-State Photon at BaBar

Nicolas Berger

We present preliminary BaBar measurements of hadronic cross sections in $e^{+} e^{-}$ annihilation using the radiative return technique. The cross sections for $e^{+} e^{-} \to p p ˉ$ , $…

hep-ex2005

Hadron Physics at BABAR

David Muller

The BaBar experiment at SLAC is designed to measure CP violation in the B meson system, however the very high statistics combined with the different electron and positron beam ener…

hep-ex2005

Searches for Pentaquark Baryons at BaBar

Tetiana Berger-Hryn'ova

This paper presents the results of inclusive searches for the strange pentaquark states $Θ^{+} (1540)$ , $Ξ_{5}^{--} (1860)$ and $Ξ_{5} (1860)^{0}$ as well as the anti-charm pentaquark state…

hep-ex2005★ 109 cited

Measurements of the B -> X_s gamma Branching Fraction and Photon Spectrum from a Sum of Exclusive Final States

The BABAR Collaboration, B. Aubert

Using 88.9 million BB events collected by the BaBar detector at the Y(4S), we measure the branching fraction for the radiative penguin process B -> X_s gamma from the sum of 38 exc…

hep-ex2005

Electro-Weak Penguin and Leptonic Decays in BaBar

F. Di Lodovico

Electro-weak penguin and leptonic decays provide an indirect probe for physics beyond the Standard Model and contribute to the determination of Standard Model parameters. Copious q…

hep-ex2005★ 56 cited

Measurement of the Inclusive Electron Spectrum in Charmless Semileptonic B Decays Near the Kinematic Endpoint and Determination of |Vub|

BABAR Collaboration, B. Aubert

We present a measurement of the inclusive electron spectrum in charmless semileptonic B decays near the kinematic limit for B->X_c eνtransitions, using a sample of 88 million Upsil…

hep-ex2005★ 16 cited

Measurement of Branching Fractions and Resonance Contributions for B0 -> D0bar K+ pi- and Search for B0 -> D0 K+ pi- Decays

The BABAR Collaboration, B. Aubert

Using 226 million $Υ (4 S) \to B B ˉ$ events collected with the BaBar detector at the PEP-II $e^{+} e^{-}$ storage ring at the Stanford Linear Accelerator Center, we measure the branchi…

hep-ex2005★ 120 cited

Search for Lepton Flavor Violation in the Decay tau -> electron gamma

B. Aubert, BABAR Collaboration

A search for the non-conservation of lepton flavor in the decay tau -> electron gamma has been performed with 2.07 x 10^8 e+e- -> tau+ tau- events collected by the BABAR detector a…

hep-ex2005★ 9 cited

A Study of b --> c and b -->u Interference in the Decay B- --> [K+ pi-]_D K*-

B. Aubert, BABAR Collaboration

Using a sample of 232 x 10^6 Upsilon(4S)--> B B-bar events collected with the BABAR detector at the PEP-II B-factory we study the decay B- --> [K+ pi-]_D K*- where the K+ pi- is ei…

hep-ex2005★ 26 cited

Measurement of the time-dependent CP-violating asymmetry in $B^{0} \to K_{s}^{0} π^{0} γ$ decays

The BABAR Collaboration, B. Aubert

We present a measurement of the time-dependent CP-violating asymmetry in $B^{0} \to K_{0}^{*} γ$ decays with $K_{0}^{*} \to K_{s}^{0} π^{0}$ based on 232 million $Υ (4 S) \to B B ˉ$ de…

hep-ex2005★ 9 cited

Evidence for B+ -> K0barK+ and B0 -> K0K0bar, and Measurement of the Branching Fraction and Search for Direct CP Violation in B+ -> K0pi+

BaBar Collaboration, B. Aubert

We present evidence for the b -> d penguin-dominated decays B+ -> K0barK+ and B0 -> K0K0bar with significances of 3.5 and 4.5 standard deviations, respectively. The results are bas…

hep-ex2005★ 100 cited

Study of the X(3872) and Y(4260) in B0-->J/psi pi+ pi- K0 and B-->J/psi pi+ pi- K- decays

B. Aubert, BABAR Collaboration

We present results of a search for the X(3872) in B0-->X(3872)KS0,X(3872)-->J/psi pi+ pi-, improved measurements of B-->X(3872)K-, and a study of the J/psi pi+ pi- mass region abov…

hep-ex2005★ 19 cited

Measurement of the B0bar Lifetime and the B0B0bar Oscillation Frequency Using Partially Reconstructed B0bar --> D*+ ell- nu-bar Decays

The BABAR Collaboration, B. Aubert

We present a simultaneous measurement of the B0bar lifetime tau_B0 and B0B0bar oscillation frequency Delta_md. We use a sample of about 50000 partially reconstructed B0bar --> D*+…

hep-ex2005★ 27 cited

Dalitz Plot Analysis of D0-->K0bar K+ K-

B. Aubert, BABAR Collaboration

A Dalitz plot analysis of approximately 12500 D0 events reconstructed in the hadronic decay D0-->K0bar K+ K- is presented. This analysis is based on a data sample of 91.5 fb-1 coll…

hep-ex2005★ 127 cited

Dalitz-plot analysis of the decays B+/- --> K+/- pi-/+ pi+/-

B. Aubert, BABAR Collaboration

We report a Dalitz-plot analysis of the charmless hadronic decays of charged B mesons to the final state K+/- pi-/+ pi+/-. Using a sample of 226.0 +/- 2.5 million BBbar pairs colle…

hep-ex2005★ 40 cited

Study of B --> pi l nu and B --> rho l nu decays and determination of |Vub|

The BABAR Collaboration, B. Aubert

We present an analysis of exclusive charmless semileptonic B-meson decays based on 83 million BBbar pairs recorded with the BABAR detector at the Upsilon(4S) resonance. Using isosp…

hep-ex2005★ 13 cited

Measurement of CP Observables for the Decays B+/- --> D0_CP K*+/-

B. Aubert, BABAR Collaboration

Using a sample of 232 million Upsilon(4S) --> B Bbar events collected with the BABAR detector at the PEP-II B Factory in 1999-2004, we study B- --> D0 K*(892)- decays where K*- -->…

hep-ex2005★ 744 cited

Observation of a Broad Structure in the $π^{+} π^{-} J / ψ$ Mass Spectrum around 4.26 GeV/ $c^{2}$

The BABAR Collaboration, B. Aubert

We study initial-state radiation events, $e^{+} e^{-} \to γ_{I S R} π^{+} π^{-} J / ψ$ , with data collected with the BaBar detector. We observe an accumulation of events near 4.26 GeV/ $c^{2}$ in the…

hep-ex2005★ 31 cited

Determination of |Vub| from Measurements of the Electron and Neutrino Momenta in Inclusive Semileptonic B Decays

B. Aubert, BABAR Collaboration

We present a determination of the CKM matrix element |Vub| based on the analysis of semileptonic B decays from a sample of 88 million Upsilon(4S) decays collected with the BABAR de…

hep-ex2005★ 5 cited

Measurement of the branching fraction and decay rate asymmetry of B- --> D_{pi+pi-pi0}K-

The BABAR Collaboration, B. Aubert

We report the observation of the decay $B^{-} \to D_{π^{+} π^{-} π^{0}} K^{-}$ , where $D_{π^{+} π^{-} π^{0}}$ indicates a neutral $D$ meson detected in the final state $π^{+} π^{-} π^{0}$ , excluding $K_{S} π^{0}$ …

hep-ex2005★ 13 cited

Measurement of the branching ratios of the Z0 into heavy quarks

SLD Collaboration, K. Abe

We measure the hadronic branching ratios of the Z0 boson into heavy quarks: Rb=Gamma(Z0->bb)/Gamma(Z0->hadrons) and Rc=Gamma(Z0->cc/Gamma(Z0->hadrons) using a multi-tag technique.…

Measurements of the branching fractions and CP-asymmetries of B- --> D0_(CP) K- decays

Search for rare quark-annihilation decays, B --> Ds(*) Phi

Measurements of the CKM Angle beta

Studies of e+e- Collisions with a Hard Initial-State Photon at BaBar

Hadron Physics at BABAR

Searches for Pentaquark Baryons at BaBar

Measurements of the B -> X_s gamma Branching Fraction and Photon Spectrum from a Sum of Exclusive Final States

Electro-Weak Penguin and Leptonic Decays in BaBar

Measurement of the Inclusive Electron Spectrum in Charmless Semileptonic B Decays Near the Kinematic Endpoint and Determination of |Vub|

Measurement of Branching Fractions and Resonance Contributions for B0 -> D0bar K+ pi- and Search for B0 -> D0 K+ pi- Decays

Search for Lepton Flavor Violation in the Decay tau -> electron gamma

A Study of b --> c and b -->u Interference in the Decay B- --> [K+ pi-]_D K*-

Measurement of the time-dependent CP-violating asymmetry in B0→Ks0​π0γ decays

Evidence for B+ -> K0barK+ and B0 -> K0K0bar, and Measurement of the Branching Fraction and Search for Direct CP Violation in B+ -> K0pi+

Study of the X(3872) and Y(4260) in B0-->J/psi pi+ pi- K0 and B-->J/psi pi+ pi- K- decays

Measurement of the B0bar Lifetime and the B0B0bar Oscillation Frequency Using Partially Reconstructed B0bar --> D*+ ell- nu-bar Decays

Dalitz Plot Analysis of D0-->K0bar K+ K-

Dalitz-plot analysis of the decays B+/- --> K+/- pi-/+ pi+/-

Study of B --> pi l nu and B --> rho l nu decays and determination of |Vub|

Measurement of CP Observables for the Decays B+/- --> D0_CP K*+/-

Observation of a Broad Structure in the π+π−J/ψ Mass Spectrum around 4.26 GeV/c2

Determination of |Vub| from Measurements of the Electron and Neutrino Momenta in Inclusive Semileptonic B Decays

Measurement of the branching fraction and decay rate asymmetry of B- --> D_{pi+pi-pi0}K-

Measurement of the branching ratios of the Z0 into heavy quarks

Measurement of the time-dependent CP-violating asymmetry in $B^{0} \to K_{s}^{0} π^{0} γ$ decays

Observation of a Broad Structure in the $π^{+} π^{-} J / ψ$ Mass Spectrum around 4.26 GeV/ $c^{2}$