Search Results - "Gabareen, A."
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Observation of time-reversal violation in the B0 meson system
Published in Physical review letters (19-11-2012)“…Although CP violation in the B meson system has been well established by the B factories, there has been no direct observation of time-reversal violation. The…”
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Heavy quarkonium: progress, puzzles, and opportunities
Published in The European physical journal. C, Particles and fields (01-02-2011)“…A golden age for heavy-quarkonium physics dawned a decade ago, initiated by the confluence of exciting advances in quantum chromodynamics (QCD) and an…”
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Evidence for an Excess of B ¯ → D ( ) τ − ν ¯ τ Decays
Published in Physical review letters (06-09-2012)“…Based on the full BABAR data sample, we report improved measurements of the ratios R(D(*))=B(B̄→D(*)τ⁻ν¯τ)/B(B̄→D(*)ll¯ν¯l), where l is either e or μ. These…”
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Searches for Lepton flavor violation in the decays tau{+/-}-->e{+/-}gamma and tau{+/-}-->mu{+/-}gamma
Published in Physical review letters (15-01-2010)“…Searches for lepton-flavor-violating decays of a tau lepton to a lighter mass lepton and a photon have been performed with the entire data set of…”
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Precise measurement of the e+e- --> pi+pi-(gamma) cross section with the initial state radiation method at BABAR
Published in Physical review letters (04-12-2009)“…A precise measurement of the cross section of the process e(+)e(-) --> pi(+)pi(-)(gamma) from threshold to an energy of 3 GeV is obtained with the initial…”
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Study of the reaction e+e− → J/ψπ+π− via initial-state radiation at BABAR
Published in Physical review. D, Particles, fields, gravitation, and cosmology (12-09-2012)“…We study the process e + e − → J / ψ π + π − with initial-state-radiation events produced at the PEP-II asymmetric-energy collider. The data were recorded with…”
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The ZEUS forward plug calorimeter with lead–scintillator plates and WLS fiber readout
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (11-08-2000)“…A Forward Plug Calorimeter (FPC) for the ZEUS detector at HERA has been built as a shashlik lead–scintillator calorimeter with wave length shifter fiber…”
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Measurement of branching fractions and rate asymmetries in the rare decays B → K ( ) ℓ + ℓ
Published in Physical review. D, Particles, fields, gravitation, and cosmology (24-08-2012)“…In a sample of 471 × 10 6 B ¯¯¯ B events collected with the BABAR detector at the PEP-II e + e − collider we study the rare decays B → K ( * ) ℓ + ℓ − , where…”
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Evidence of B + → τ + ν decays with hadronic B tags
Published in Physical review. D, Particles, fields, gravitation, and cosmology (08-08-2013)“…We present a search for the decay B + → τ + ν using 467.8 × 10 6 B ¯¯¯ B pairs collected at the Υ ( 4 S ) resonance with the BABAR detector at the SLAC PEP-II…”
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Exclusive measurements of b → s γ transition rate and photon energy spectrum
Published in Physical review. D, Particles, fields, gravitation, and cosmology (26-09-2012)Get full text
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Search for di-muon decays of a low-mass Higgs boson in radiative decays of the Υ ( 1 S )
Published in Physical review. D, Particles, fields, gravitation, and cosmology (15-02-2013)“…We search for di-muon decays of a low-mass Higgs boson ( A 0 ) produced in radiative Υ ( 1 S ) decays. The Υ ( 1 S ) sample is selected by tagging the pion…”
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Search for low-mass dark-sector Higgs bosons
Published in Physical review letters (21-05-2012)“…Recent astrophysical and terrestrial experiments have motivated the proposal of a dark sector with GeV-scale gauge boson force carriers and new Higgs bosons…”
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Evidence for direct CP violation in the measurement of the Cabbibo-Kobayashi-Maskawa angle γ with B∓ → D()K()∓ decays
Published in Physical review letters (17-09-2010)“…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…”
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Measurement of the D(2010)+ meson width and the D(2010)+ - D0 mass difference
Published in Physical review letters (09-09-2013)“…We measure the mass difference Δm0 between the D*(2010)+ and the D0 and the natural linewidth Γ of the transition D*(2010)+ → D0π+. The data were recorded with…”
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Direct CP, lepton flavor, and isospin asymmetries in the decays B-->K()l+l
Published in Physical review letters (06-03-2009)“…We measure branching fractions and integrated rate asymmetries for the rare decays B-->K(*)l+l-, where l+l- is either e+e- or micro+micro-, using a sample of…”
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Search for CP violation in B0-B0 mixing using partial reconstruction of B0→D- Xℓ+ νℓ and a kaon tag
Published in Physical review letters (06-09-2013)“…We present results of a search for CP violation in B0- B0 mixing with the BABAR detector. We select a sample of B0→D*- Xℓ+ ν decays with a partial…”
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Search for CP violation in the decays D0 --> K- K+ and D0 --> pi- pi
Published in Physical review letters (15-02-2008)“…We measure time-integrated CP-violating asymmetries of neutral charmed mesons in the modes D0 --> K(-) K(+) and D0 --> pi(-) pi(+) with the highest precision…”
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Improved limits on B0 decays to invisible (+γ) final states
Published in Physical review. D, Particles, fields, gravitation, and cosmology (27-09-2012)“…We establish improved upper limits on branching fractions for B 0 decays to final states where the decay products are purely invisible (i.e., no observable…”
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Search for invisible decays of the Upsilon(1S)
Published in Physical review letters (18-12-2009)“…We search for invisible decays of the Upsilon(1S) meson using a sample of 91.4 x 10(6) Upsilon(3S) mesons collected at the BABAR/PEP-II B factory. We select…”
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