Search Results - "Passaggio, S."
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Production of antihydrogen
Published in Physics letters. B (01-02-1996)“…Results are presented for a measurement for the production of the antihydrogen atom H 0 ≡ p e + , the simplest atomic bound state of antimatter. A method has…”
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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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Performances of RPCs in the BaBar experiment
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-12-2003)“…The BaBar experiment uses a big system based on RPC detectors to discriminate muons from pions and to identify neutral hadrons. About 2000 m 2 of RPC chambers…”
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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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Measurement of the B→Xsℓ+ℓ− Branching Fraction and Search for Direct CP Violation from a Sum of Exclusive Final States
Published in Physical review letters (30-05-2014)“…We measure the total branching fraction of the flavor-changing neutral-current process B → X s ℓ + ℓ − , along with partial branching fractions in bins of…”
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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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Search for Evidence of Baryogenesis and Dark Matter in B + → ψ D + p Decays at BABAR
Published in Physical review letters (16-11-2023)Get full text
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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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Collins asymmetries in inclusive charged KK and Kπ pairs produced in e+e- annihilation
Published in Physical review. D, Particles, fields, gravitation, and cosmology (22-12-2015)Get full text
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Hydrous zirconium dioxide: interfacial properties, the formation of monodisperse spherical particles, and its crystallization at high temperatures
Published in Journal of materials science (01-12-1985)“…The characteristics of hydrous zirconia gels obtained by hydrolysis of highly acidic ZrOCl sub(2) multiplied by 8H sub(2)O solutions at similar to 100 degree C…”
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Time-Integrated Luminosity Recorded by the BABAR Detector at the PEP-II e+e- Collider
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (21-10-2013)“…We describe a measurement of the time-integrated luminosity of the data collected by the BABAR experiment at the PEP-II asymmetric-energy e+e- collider at the…”
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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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The RPC-based IFR system at BaBar experiment: preliminary results
Published in Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment (01-01-2002)“…The IFR system is a RPC-based detector used to identify muons and neutral hadrons in the BaBar experiment at PEP II machine in SLAC. The RPC system can be used…”
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Search for Rare or Forbidden Decays of the D0 Meson
Published in Physical review letters (19-02-2020)“…We present a search for nine lepton-number-violating and three lepton-flavor-violating neutral charm decays of the type D0→h′−h−ℓ′+ℓ+ and D0→h′−h+ℓ′±ℓ∓, where…”
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Observation of the Decay D0→K−π+e+e
Published in Physical review letters (27-02-2019)“…We report the observation of the rare charm decay D0→K−π+e+e−, based on 468 fb−1 of e+e− annihilation data collected at or close to the center-of-mass energy…”
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Observation of direct CP violation in the measurement of the Cabibbo-Kobayashi-Maskawa angle γ with B±→D()K()± decays
Published in Physical review. D, Particles, fields, gravitation, and cosmology (22-05-2013)“…We report the determination of the Cabibbo-Kobayashi-Maskawa C P -violating angle γ through the combination of various measurements involving B ± → D K ± , B ±…”
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Precision measurement of the e + e − → K + K − ( γ ) cross section with the initial-state radiation method at BABAR
Published in Physical review. D, Particles, fields, gravitation, and cosmology (27-08-2013)“…A precise measurement of the cross section for the process e + e − → K + K − ( γ ) from threshold to an energy of 5 GeV is obtained with the initial-state…”
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Study of the e + e − → K + K − reaction in the energy range from 2.6 to 8.0 GeV
Published in Physical review. D, Particles, fields, gravitation, and cosmology (20-10-2015)Get full text
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