Showing 2004 · hep-exShow all

17 papers · 2 filters

hep-ex2004★ 22 cited

Limit on the B0->rho0rho0 Branching Fraction and Implications for the CKM Angle alpha

The BABAR Collaboration, B. Aubert et al

We search for the decay B0 -> rho0 rho0 in a data sample of about 227 million Upsilon(4S)-> BBbar decays collected with the BABAR detector at the PEP-II asymmetric-energy e+e- coll…

hep-ex2004★ 44 cited

Measurement of Branching Fractions and Charge Asymmetries for Exclusive B Decays to Charmonium

B. Aubert, BABAR Collaboration

We report measurements of branching fractions and charge asymmetries of exclusive decays of neutral and charged B mesons into two-body final states containing a charmonium state an…

hep-ex2004★ 46 cited

A search for the decay

B. Aubert, BABAR Collaboration

We search for the rare flavor-changing neutral-current decay in a data sample of 82 fb collected with the {\sl BABAR} detector at the PEP-II B-factory.…

hep-ex2004★ 12 cited

A Study of Strange Particles Produced in Neutrino Neutral Current Interactions in the NOMAD Experiment

NOMAD Collaboration

Results of a detailed study of strange particle production in neutrino neutral current interactions are presented using the data from the NOMAD experiment. Integral yields of neutr…

hep-ex2004★ 18 cited

Measurement of the B^0_s lifetime in the exclusive decay channel B^0_s -> J/psi phi

D0 Collaboration, V. M. Abazov

Using the exclusive decay B^0_s -> J/psi (mu+mu-) phi(K+K-), we report the most precise single measurement of the B^0_s lifetime. The data sample corresponds to an integrated lumin…

hep-ex2004★ 2 cited

Measurement of Neutral B Decay Branching Fractions to Kspi+pi- Final States

B. Aubert, BABAR Collaboration

Branching fraction measurements using B-meson decays to Kspi+pi- are presented. These measurements were obtained by analyzing a data sample of 88.9 million Y(4S) --> BB decays coll…

hep-ex2004★ 14 cited

Measurement of the B0bar --> D*+ l- nubar_l Decay Rate and |Vcb|

B. Aubert, BABAR Collaboration

We present a measurement of the Cabibbo-Kobayashi-Maskawa matrix element |Vcb| based on a sample of about 53,700 B0bar --> D*+ l- nubar_l decays observed by the BaBar detector. We…

hep-ex2004★ 10 cited

Search for the decay B0 --> J/psi gamma

BABAR collaboration

We present the results of a search for the radiative decay B0 --> J/psi gamma in a data set containing 123 million Y(4S)--> B B-bar decays, collected by the BABAR detector at the P…

hep-ex2004★ 18 cited

Search for flavor-changing neutral current and lepton-flavor violating decays of D0->l+l-

BaBar Collaboration, B. Aubert

We report on a search for the flavor-changing neutral current decays $\Dz\to e^+e^-$ and $\Dz\toμ^+μ^-$, and the lepton-flavor violating decay $\Dz\to e^\pmμ^\mp$. The measurement…

hep-ex2004★ 15 cited

Search for B0 Decays to Invisible Final States and to nu nubar gamma

B. Aubert, BABAR Collaboration

We establish upper limits on branching fractions for B0 decays to final states where the decay products are purely invisible (i.e., no observable final state particles) and for B0…

hep-ex2004

Electron Beam for LHC

Mieczyslaw Witold Krasny

A method of delivering a monochromatic electron beam to the LHC interaction points is proposed. In this method, heavy ions are used as carriers of the projectile electrons. Acceler…

hep-ex2004★ 46 cited

A Measurement of the Total Width, the Electronic Width, and the Mass of the Upsilon(10580) Resonance

B. Aubert

We present a measurement of the parameters of the resonance based on a dataset collected with the BABAR detector at the SLAC PEP-II asymmetric factory. We measure th…

hep-ex2004★ 30 cited

Measurement of the Direct CP Asymmetry in b -> s gamma Decays

B. Aubert, BABAR Collaboration

We describe a measurement of the direct CP asymmetry between inclusive b -> s gamma and bbar -> sbar gamma decays. This asymmetry is expected to be less than 0.01 in the Standard M…

hep-ex2004★ 43 cited

Measurements of Moments of the Hadronic Mass Distribution in Semileptonic B Decays

B. Aubert

We report a measurement of the first four moments of the hadronic mass distribution in B --> X_c lv decays. The measurements are based on 89 million Upsilon(4S) --> BBbar events wh…

hep-ex2004★ 21 cited

Measurements of CP-violating Asymmetries in Decays

The BABAR Collaboration, B. Aubert

We present a measurement of the time-dependent CP-violating (CPV) asymmetries in decays based on 124 million decays collected with the…

hep-ex2004★ 19 cited

Study of B^+/- --> J/psi pi^+/- and B^+/- --> J/psi K^+/- Decays: Measurement of the Ratio of Branching Fractions and Search for Direct CP Violation

The BABAR Collaboration, B. Aubert

We study B^+/- --> J/psi pi^+/- and B^+/- --> J/psi K^+/- decays in a sample of about 89 million BB~ pairs collected with the BABAR detector at the PEP-II asymmetric B-factory at S…

hep-ex2004★ 13 cited

Study of high momentum eta' production in B -> eta' X_s

B. Aubert, BABAR Collaboration

We measure the branching fraction for the charmless semi-inclusive process B -> eta' X_s, where the eta' meson has a momentum in the range 2.0 to 2.7 GeV/c in the Upsilon(4S) cente…