Universitat de Barcelona

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Showing 2010 · hep-exShow all

36 papers · 2 filters

hep-ex2010★ 4 cited

Measurement of partial branching fractions of inclusive charmless B meson decays to K+, K0, and pi+

The BABAR Collaboration, P. del Amo Sanchez

We present measurements of partial branching fractions of $B \to K^{+} X$ , $B \to K^{0} X$ , and $B \to π^{+} X$ , where $X$ denotes any accessible final state abov…

hep-ex2010★ 11 cited

Measurements of branching fractions, polarizations, and direct CP-violation asymmetries in B+ -> rho0 K+ and B+ -> f0(980)K+ decays

P. del Amo Sanchez

We present measurements of the branching fractions, longitudinal polarization, and direct CP-violation asymmetries for the decays B+ -> rho0 K*+ and B+ -> f0(980) K*+ with a sample…

hep-ex2010★ 23 cited

Observation of the Decay B^{-} \rightarrow D_{s}^{(*)+} K^{-} \ell^{-} \barν_{\ell}

The BABAR Collaboration, P. del Amo Sanchez

We report the observation of the decay $B^{-} \to D_{s}^{(*) +} K^{-} ℓ^{-} ν ˉ_{ℓ}$ based on $342 \mathrm {\,fb}^{-1}}$ of data collected at the $\Y4S$ resonance wi…

hep-ex2010★ 48 cited

Analysis of the D+ --> K- pi+ e+ nu_e decay channel

The BABAR Collaboration, P. del Amo Sanchez

Using 347.5 fb-1 of data recorded by the BABAR detector at the PEP-II electron-positron collider, 244*10^3 signal events for the D+ --> K- pi+ e+ nu_e decay channel are analyzed. T…

hep-ex2010★ 27 cited

Search for CP Violation in the Decay D+/- -> Ks pi+/-

The BABAR Collaboration, P. del Amo Sanchez

We report on a search for CP violation in the decay $D^{\pm} \to K_{S}^{0} π^{\pm}$ using a data set corresponding to an integrated luminosity of $469 f b^{- 1}$ …

hep-ex2010★ 71 cited

Dalitz plot analysis of Ds+ --> K+ K- pi+

P. del Amo Sanchez et al.

We perform a Dalitz plot analysis of about 100,000 Ds+ decays to K+ K- pi+ and measure the complex amplitudes of the intermediate resonances which contribute to this decay mode. We…

hep-ex2010★ 27 cited

Measurement of the B -> Dbar()D()K branching fractions

The BABAR Collaboration, P. del Amo Sanchez

We present a measurement of the branching fractions of the 22 decay channels of the B0 and B+ mesons to Dbar(*)D(*)K, where the D(*) and Dbar(*) mesons are fully reconstructed. Sum…

hep-ex2010★ 19 cited

A Search for the Decay B^0 -> gamma gamma

The BABAR Collaboration, P. del Amo Sanchez et al

We report the result of a search for the rare decay B^0 -> gamma gamma in 426 fb-1 of data, corresponding to 226 million B^0 \bar{B}^0 pairs, collected on the Upsilon(4S) resonance…

hep-ex2010★ 164 cited

Measurement of sigma(pp -> b anti-b X) at \sqrt(s)=7 TeV in the forward region

LHCb Collaboration, R. Aaij, C. Abellan Beteta +628

Decays of b hadrons into final states containing a D0 meson and a muon are used to measure the b anti-b production cross-section in proton-proton collisions at a centre-of-mass ene…

hep-ex2010

Physics at the LHC: a short overview

David d'Enterria

The CERN Large Hadron Collider (LHC) started operation a few months ago. The machine will deliver proton-proton and nucleus-nucleus collisions at energies as high as sqrt(s)=14 TeV…

hep-ex2010★ 42 cited

Measurement of the B^0 --> pi^-ell^+nu and B^+ --> eta^(')ell^+nu Branching Fractions, the B^0 --> pi^-ell^+nu and B^+ --> eta ell^+nu Form-Factor Shapes, and Determination of |V_{ub}|

The BABAR Collaboration, P. del Amo Sanchez etal

We report the results of a study of the exclusive charmless semileptonic decays, $B^{+} \to η^{(')} ℓ^{+} ν$ and $B^{0} \to π^{-} ℓ^{+} ν$ , undertaken wi…

hep-ex2010★ 42 cited

Prompt K_short production in pp collisions at sqrt(s)=0.9 TeV

LHCb Collaboration, R. Aaij, C. Abellan Beteta +627

The production of K_short mesons in pp collisions at a centre-of-mass energy of 0.9 TeV is studied with the LHCb detector at the Large Hadron Collider. The luminosity of the analys…

hep-ex2010★ 155 cited

Observation of new resonances decaying to $D π$ and $D^{*} π$ in inclusive $e^{+} e^{-}$ collisions near $s =$ 10.58 GeV

The BABAR Collaboration, P. del Amo Sanchez

We present a study of the $D^{+} π^{-}$ , $D^{0} π^{+}$ , and $D^{*+} π^{-}$ systems in inclusive $e^{+} e^{-} \to c c ˉ$ interactions in a search for new excited $D$ meson states. We use a…

hep-ex2010★ 53 cited

Search for the Rare Decay B->K nu nubar

The BABAR Collaboration, P. del Amo Sanchez

We present a search for the rare decays B+ -> K+ nu nubar and B0 -> K0 nu nubar using 459 million BBbar pairs collected with the BaBar detector at the SLAC National Accelerator Lab…

hep-ex2010★ 36 cited

Exclusive Production of $D_{s}^{+} D_{s}^{-}$ , $D_{s}^{+} D_{s}^{-}$ , and $D_{s}^{+} D_{s}^{*-}$ via $e^{+} e^{-}$ Annihilation with Initial-State-Radiation

The BABAR Collaboration, P. del Amo Sanchez et al.

We perform a study of exclusive production of $D_{s}^{+} D_{s}^{-}$ , $D_{s}^{*+} D_{s}^{-}$ , and $D_{s}^{*+} D_{s}^{*-}$ final states in initial-state-radiation events from $e^{+} e^{-}$ annihilations at a…

hep-ex2010★ 46 cited

Measurement of the Absolute Branching Fractions for $D_{s}^{-} \to ℓ^{-} ν ˉ_{ℓ}$ and Extraction of the Decay Constant $f_{D_{s}}$

The BABAR Collaboration, P. del Amo Sanches

The absolute branching fractions for the decays $D_{s}^{-} \to ℓ^{-} ν ˉ_{ℓ}$ ( $ℓ = e$ , $μ$ , or $τ$ ) are measured using a data sample corresponding to an integrated lum…

hep-ex2010★ 74 cited

Search for Production of Invisible Final States in Single-Photon Decays of Upsilon(1S)

P. del Amo Sanchez

We search for single-photon decays of the Upsilon(1S) resonance, Upsilon->gamma+invisible, where the invisible state is either a particle of definite mass, such as a light Higgs bo…

hep-ex2010★ 6 cited

Search for f_J(2220) in radiative J/psi decays

The BABAR Collaboration, P. del Amo Sanchez

We present a search for f_J(2220) production in radiative J/psi -> gamma f_J(2220) decays using 460 fb-1 of data collected with the BABAR detector at the SLAC PEP-II e+e- collider.…

hep-ex2010★ 45 cited

Measurement of CP observables in B+- --> D_CP K+- decays and constraints on the CKM angle gamma

The BABAR Collaboration, P. del Amo Sanchez

Using the entire sample of 467 million Y(4S) --> BBbar decays collected with the BaBar detector at the PEP-II asymmetric-energy B factory at SLAC, we perform a "GLW" analysis of B+…

hep-ex2010★ 2 cited

Correlated leading baryon-antibaryon production in e+e- --> ccbar --> Lambda_c+ antiLambda_c- X

The BABAR Collaboration, B. Aubert

We present a study of 649 \pm 35 e+e- --> ccbar events produced at sqrt{s}~10.6 GeV containing both a Lambda_c baryon and a Lambda_c antibaryon. The number observed is roughly four…

hep-ex2010★ 206 cited

Evidence for the decay X(3872) --> J/psi omega

P. del Amo Sanchez et al.

We present a study of the decays B^{0,+} --> J/psi pi^+ pi^- pi^0 K^{0,+}, using 467 10^6 BBbar pairs recorded with the BABAR detector. We present evidence for the decay mode X(387…

hep-ex2010★ 149 cited

Study of B --> pi l nu and B --> rho l nu Decays and Determination of |V_ub|

The BABAR Collaboration, P. del Amo Sanchez

We present an analysis of exclusive charmless semileptonic B-meson decays based on 377 million BBbar pairs recorded with the BABAR detector at the Upsilon(4S) resonance. We select…

hep-ex2010★ 76 cited

Evidence for direct CP violation in the measurement of the Cabibbo-Kobayashi-Maskawa angle gamma with B-+ --> D() K()-+ decays

The BABAR Collaboration, P. del Amo Sanchez

We report the measurement of the Cabibbo-Kobayashi-Maskawa CP-violating angle $γ$ through a Dalitz plot analysis of neutral $D$ meson decays to $K_{S}^{0} π^{+} π^{-}$ and $K_{S}^{0} K^{+} K^{-}$ …

hep-ex2010★ 4 cited

Search for B+ -> D+ K0 and B+-> D+ K*0 decays

The BABAR Collaboration, P. del Amo Sanchez

We report a search for the rare decays $B^{+} \to D^{+} K^{0}$ and $B^{+} \to D^{+} K^{* 0}$ in an event sample of approximately 465 million $B B ˉ$ pairs collected with the BaBar detector…

Measurement of partial branching fractions of inclusive charmless B meson decays to K+, K0, and pi+

Measurements of branching fractions, polarizations, and direct CP-violation asymmetries in B+ -> rho0 K*+ and B+ -> f0(980)K*+ decays

Observation of the Decay B^{-} \rightarrow D_{s}^{(*)+} K^{-} \ell^{-} \barν_{\ell}

Analysis of the D+ --> K- pi+ e+ nu_e decay channel

Search for CP Violation in the Decay D+/- -> Ks pi+/-

Dalitz plot analysis of Ds+ --> K+ K- pi+

Measurement of the B -> Dbar(*)D(*)K branching fractions

A Search for the Decay B^0 -> gamma gamma

Measurement of sigma(pp -> b anti-b X) at \sqrt(s)=7 TeV in the forward region

Physics at the LHC: a short overview

Measurement of the B^0 --> pi^-ell^+nu and B^+ --> eta^(')ell^+nu Branching Fractions, the B^0 --> pi^-ell^+nu and B^+ --> eta ell^+nu Form-Factor Shapes, and Determination of |V_{ub}|

Prompt K_short production in pp collisions at sqrt(s)=0.9 TeV

Observation of new resonances decaying to Dπ and D∗π in inclusive e+e− collisions near s​=10.58 GeV

Search for the Rare Decay B->K nu nubar

Exclusive Production of Ds+​Ds−​, Ds∗+​Ds−​, and Ds∗+​Ds∗−​ via e+e− Annihilation with Initial-State-Radiation

Measurement of the Absolute Branching Fractions for Ds−​→ℓ−νˉℓ​ and Extraction of the Decay Constant fDs​​

Search for Production of Invisible Final States in Single-Photon Decays of Upsilon(1S)

Search for f_J(2220) in radiative J/psi decays

Measurement of CP observables in B+- --> D_CP K+- decays and constraints on the CKM angle gamma

Correlated leading baryon-antibaryon production in e+e- --> ccbar --> Lambda_c+ antiLambda_c- X

Evidence for the decay X(3872) --> J/psi omega

Study of B --> pi l nu and B --> rho l nu Decays and Determination of |V_ub|

Evidence for direct CP violation in the measurement of the Cabibbo-Kobayashi-Maskawa angle gamma with B-+ --> D(*) K(*)-+ decays

Search for B+ -> D+ K0 and B+-> D+ K*0 decays

Measurements of branching fractions, polarizations, and direct CP-violation asymmetries in B+ -> rho0 K+ and B+ -> f0(980)K+ decays

Measurement of the B -> Dbar()D()K branching fractions

Observation of new resonances decaying to $D π$ and $D^{*} π$ in inclusive $e^{+} e^{-}$ collisions near $s =$ 10.58 GeV

Exclusive Production of $D_{s}^{+} D_{s}^{-}$ , $D_{s}^{+} D_{s}^{-}$ , and $D_{s}^{+} D_{s}^{*-}$ via $e^{+} e^{-}$ Annihilation with Initial-State-Radiation

Measurement of the Absolute Branching Fractions for $D_{s}^{-} \to ℓ^{-} ν ˉ_{ℓ}$ and Extraction of the Decay Constant $f_{D_{s}}$

Evidence for direct CP violation in the measurement of the Cabibbo-Kobayashi-Maskawa angle gamma with B-+ --> D() K()-+ decays