S. Zain

activity

20062010

most citedSearches for Lepton Flavor Violation in the Decays tau -> e gamma and tau -> mu gamma

635 citations · 3.4k across the 65 of their papers we have counts for

collaborators

65 papers

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★ 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

Evidence for B+ --> tau+ nu_tau decays using hadronic B tags

The BABAR Collaboration, P. del Amo Sanchez

We present a search for the decay B+ --> tau+ nu_tau using 467.8 x 10^6 B B-bar pairs collected at the Upsilon(4S) resonance with the BABAR detector at the SLAC PEP-II B-Factory. W…

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

Search for b-->u transitions in B- --> DK- and B- --> D*K- Decays

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

We report results from an updated study of the suppressed decays B- to D K- and B- to D* K- followed by D to K+pi-, where D(*) indicates a D(*)0 or an anti-D(*)0 meson, and D* deca…

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★ 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…

hep-ex2010★ 12 cited

B-meson decays to eta' rho, eta' f0, and eta' K*

The BaBar Collaboration, P. del Amo Sanchez

We present measurements of B-meson decays to the final states eta'rho, eta'f0, and eta'K*, where K* stands for a vector, scalar, or tensor strange meson. We observe a significant s…

hep-ex2010★ 40 cited

Observation of the $Υ (1^{3} D_{J})$ Bottomonium State through Decays to $π^{+} π^{-} Υ (1 S)$

P. del Amo Sanchez, the BABAR Collaboration

Based on $122 \times 1 0^{6}$ \ThreeS events collected with the \babar\ detector, we have observed the \OneDJ bottomonium state through the $\ThreeS\to\g\g\OneDJ\to\g\g\pip\pim\OneS$ d…

hep-ex2010★ 73 cited

Limits on tau Lepton-Flavor Violating Decays in three charged leptons

BaBar Collaboration, J. P. Lees

A search for the neutrinoless, lepton-flavor violating decay of the tau lepton into three charged leptons has been performed using an integrated luminosity of 468 fb^-1 collected w…

hep-ex2010★ 31 cited

Test of lepton universality in Upsilon(1S) decays at BaBar

The BABAR Collaboration, P. del Amo Sanchez

The ratio $R_{τ μ} (Υ (1 S)) = Γ_{Υ (1 S) \to τ^{+} τ^{-}} / Γ_{Υ (1 S) \to μ^{+} μ^{-}}$ is measured using a sample of $(121.8 \pm 1.2) \times 1 0^{6}$ $Υ (3 S)$ events recorded by the BABAR detector. This measur…

hep-ex2010★ 103 cited

Observation of the chi_c2(2P) meson in the reaction gamma gamma -> D Dbar at BABAR

The BABAR Collaboration, B. Aubert

A search for the Z(3930) resonance in gamma gamma production of the DDbar system has been performed using a data sample corresponding to an integrated luminosity of 384 fb^-1 recor…

hep-ex2009★ 41 cited

Measurements of the $τ$ Mass and Mass Difference of the $τ^{+}$ and $τ^{-}$ } at BaBar

The BaBar Collaboration, B. Aubert

We present the result from a precision measurement of the mass of the $τ$ lepton, $M_{τ}$ , based on $423 f b^{- 1}$ of data recorded at the $Υ (4 S)$ resonance with the BaBar detector. U…

hep-ex2009★ 21 cited

Measurement of branching fractions of B decays to K1(1270)pi and K1(1400)pi and determination of the CKM angle alpha from B0 --> a1(1260)+/- pi-/+

The BABAR Collaboration, B. Aubert

We report measurements of the branching fractions of neutral and charged B meson decays to final states containing a K_1(1270) or K_1(1400) meson and a charged pion. The data, coll…

hep-ex2009★ 48 cited

Measurement of D0-D0bar Mixing using the Ratio of Lifetimes for the Decays D0->K-pi+ and K+K-

The BABAR Collaboration, B. Aubert

We measure the rate of D0-D0bar mixing with the observable yCP=(tauKpi/tauKK)-1, where tauKK and tauKpi are respectively the mean lifetimes of CP-even D0->K+K- and CP-mixed D0->K-p…

hep-ex2009★ 635 cited

Searches for Lepton Flavor Violation in the Decays tau -> e gamma and tau -> mu gamma

The BABAR Collaboration, B. Aubert

Searches for lepton-flavor-violating decay of a tau lepton to a lighter mass lepton and a photon have been performed with the entire dataset of (963 +- 7) x 10^6 tau decays collect…

hep-ex2009★ 112 cited

Study of $D_{s J}$ decays to $D^{*} K$ in inclusive $e^{+} e^{-}$ interactions

The BABAR Collaboration, B. Aubert

We observe the decays D^*_{s1}(2710)^+ \to D^*K $an d$ D^*_{sJ}(2860)^+ \to D^*K $an d m e a s u r e t h e i r b r an c hin g f r a c t i o n sr e l a t i v e t o t h e$ D K$ final state. We also observe, in the…

hep-ex2009★ 9 cited

Observation and Polarization Measurement of B0 --> a1(1260)+ a1(1260)- Decay

The BABAR Collaboration, B. Aubert

We present measurements of the branching fraction B and the longitudinal polarization fraction fL for B0 -> a1(1260)+ a1(1260)- decays, with a1(1260)+/- -> π- π+ π+/-. The data sam…

hep-ex2009★ 24 cited

B meson decays to charmless meson pairs containing eta or eta' mesons

The BABAR Collaboration, B. Aubert

We present updated measurements of the branching fractions for B0 meson decays to etaK0, etaeta, etaphi, etaomega, eta'K0, eta'eta', eta'phi, and eta'omega, and branching fractions…

hep-ex2009★ 199 cited

Search for Dimuon Decays of a Light Scalar Boson in Radiative Transitions Upsilon -> gamma A0

The BABAR Collaboration, B. Aubert

We search for evidence of a light scalar boson in the radiative decays of the Upsilon(2S) and Upsilon(3S) resonances: Upsilon(2S,3S)-> gamma A0, A0 -> mu^+ mu^-. Such a particle ap…

hep-ex2009★ 63 cited

Time-dependent amplitude analysis of B0 --> K0S pi+ pi-

The BABAR Collaboration, B. Aubert

We perform a time-dependent amplitude analysis of $B^{0} \to K_{S}^{0} π^{+} π^{-}$ decays to extract the CP violation parameters of $f_{0} (980) K_{S}^{0}$ and $ρ^{0} (770) K_{S}^{0}$ and the direct CP asy…

hep-ex2009

Search for B^0 Meson Decays to π^0 K^0_SK^0_S, ηK^0_S K^0_S, and η^{\prime}K^0_SK^0_S

The BABAR Collaboration, B. Aubert

We describe searches for $B^{0}$ meson decays to the charmless final states $π^{0} K_{S}^{0} K_{S}^{0}$ , $η K_{S}^{0} K_{S}^{0}$ , and $η^{'} K_{S}^{0} K_{S}^{0}$ . The data sample corresponds to $467 \times 1…

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

Search for the Rare Decay B->K nu nubar

Evidence for B+ --> tau+ nu_tau decays using hadronic B tags

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

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

Search for b-->u transitions in B- --> DK- and B- --> D*K- Decays

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

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

B-meson decays to eta' rho, eta' f0, and eta' K*

Observation of the Υ(13DJ​) Bottomonium State through Decays to π+π−Υ(1S)

Limits on tau Lepton-Flavor Violating Decays in three charged leptons

Test of lepton universality in Upsilon(1S) decays at BaBar

Observation of the chi_c2(2P) meson in the reaction gamma gamma -> D Dbar at BABAR

Measurements of the τ Mass and Mass Difference of the τ+ and τ−} at BaBar

Measurement of branching fractions of B decays to K1(1270)pi and K1(1400)pi and determination of the CKM angle alpha from B0 --> a1(1260)+/- pi-/+

Measurement of D0-D0bar Mixing using the Ratio of Lifetimes for the Decays D0->K-pi+ and K+K-

Searches for Lepton Flavor Violation in the Decays tau -> e gamma and tau -> mu gamma

Study of DsJ​ decays to D∗K in inclusive e+e− interactions

Observation and Polarization Measurement of B0 --> a1(1260)+ a1(1260)- Decay

B meson decays to charmless meson pairs containing eta or eta' mesons

Search for Dimuon Decays of a Light Scalar Boson in Radiative Transitions Upsilon -> gamma A0

Time-dependent amplitude analysis of B0 --> K0S pi+ pi-

Search for B^0 Meson Decays to π^0 K^0_SK^0_S, ηK^0_S K^0_S, and η^{\prime}K^0_SK^0_S

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

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

Observation of the $Υ (1^{3} D_{J})$ Bottomonium State through Decays to $π^{+} π^{-} Υ (1 S)$

Measurements of the $τ$ Mass and Mass Difference of the $τ^{+}$ and $τ^{-}$ } at BaBar

Study of $D_{s J}$ decays to $D^{*} K$ in inclusive $e^{+} e^{-}$ interactions