Search Results - "Scarr, J.M."
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A measurement of the inclusive b→ sγ branching ratio
Published in Physics letters. B (11-06-1998)“…The flavour changing neutral current decay b→ sγ has been detected in hadronic Z decays collected by ALEPH at LEP. The signal is isolated in lifetime-tagged b…”
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2
Single- and multi-photon production in e +e − collisions at a centre-of-mass energy of 183 GeV
Published in Physics letters. B (1998)“…The production of final states involving one or more energetic photons from e +e − collisions is studied in a sample of 58.5 pb −1 of data recorded at a…”
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3
Measurement of the Λb polarization in Z decays
Published in Physics letters. B (1996)“…The Λ b polarization in hadronic Z decays is measured in semileptonic decays from the average energies of the charged lepton and the neutrino. In a data sample…”
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4
A measurement of Rb using a lifetime-mass tag
Published in Physics letters. B (22-05-1997)“…ALEPH's published measurement of R b = Γ( Z → b b) Γ( Z → hadrons) using a lifetime tag is updated using the full LEP 1 data sample. Considerable effort has…”
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5
A measurement of Rb using mutually exclusive tags
Published in Physics letters. B (22-05-1997)“…A measurement of R b using five mutually exclusive hemisphere tags has been performed by ALEPH using the full LEP1 statistics. Three tags are designed to…”
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6
Search for the B c meson in hadronic Z decays
Published in Physics letters. B (1997)“…A search for the B c meson decaying into the channels J ψπ + and J ψℓ +ν ℓ (ℓ = e or μ) is performed in a sample of 3.9 million hadronic Z decays collected by…”
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7
Search for charged Higgs bosons in e +e − collisions at centre-of-mass energies from 130 to 172 GeV
Published in Physics letters. B (1998)“…The data collected at centre-of-mass energies ranging from 130 to 172 GeV by ALEPH at LEP, corresponding to an integrated luminosity of 27.5 pb −1, are…”
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Search for CP violation in the decay Z → τ+τ
Published in Physics letters. B (09-03-1995)“…Data collected by ALEPH in the years 1990, 1991 and 1992 have been used to update a previous search for CP violation in the decay of the Z into τ + τ −. The…”
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9
Measurement of hadron and lepton-pair production from e +e − annihilation at centre-of-mass energies of 130 and 136 GeV
Published in Physics letters. B (1996)“…Hadronic and leptonic cross-sections and forward-backward asymmetries are measured using 5.7 pb −1 of data taken with the ALEPH detector at LEP at…”
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10
Measurement of the W-pair cross section in e +e − collisions at 172 GeV
Published in Physics letters. B (1997)“…The e +e −→ W + W − cross section is measured in a data sample collected by ALEPH at a mean centre-of-mass energy of 172.09 GeV, corresponding to an integrated…”
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11
Measurement of the branching fraction for D 0 → K −π
Published in Physics letters. B (26-06-1997)“…The branching fraction for D 0 → K −π + is measured with the statistics collected by ALEPH from 1991 to 1994. The method is based on the comparison between the…”
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12
Measurement of the transverse spin correlations in the decay Z → τ+τ
Published in Physics letters. B (17-07-1997)“…For τ leptons produced in e + e − → τ + τ − interactions there are, in addition to the longitudinal spin correlations, two independent transverse spin…”
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13
Measurement of the mass of the Λb baryon
Published in Physics letters. B (1996)“…In a data sample of four million hadronic Z decays collected with the ALEPH detector at LEP, four Λ b baryon candidates are exclusively reconstructed in the Λ…”
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14
Michel parameters and τ neutrino helicity from decay correlations in Z → τ+τ
Published in Physics letters. B (09-03-1995)“…The Michel parameters and the average τ-neutrino helicity are measured using correlations between the decays of the τ + and τ − produced on the Z resonance and…”
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15
Four-jet final state production in e +e − collisions at centre-of-mass energies ranging from 130 to 184 GeV
Published in Physics letters. B (1998)“…The four jet topology is analysed in the ALEPH data taken between November 1995 and October 1997, at centre-of-mass energies ranging from 130 to 184 GeV. While…”
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16
Test of the flavour independence of αs
Published in Physics letters. B (27-07-1995)“…Using about 950000 hadronic events collected during 1991 and 1992 with the ALEPH detector, the ratios r b = α s b α s udsc and r uds = α s uds α s cb have been…”
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17
Search for the standard model Higgs boson at the LEP2 Collider near [formula omitted] GeV
Published in Physics letters. B (01-02-1999)“…During 1997 the ALEPH experiment at LEP gathered 57 pb −1 of data at centre-of-mass energies near 183 GeV. These data are used to look for possible signals…”
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18
Search for the standard model Higgs boson at the LEP2 collider near [formula omitted]
Published in Physics letters. B (01-11-1998)“…During 1997 the ALEPH experiment at LEP gathered 57 pb −1 of data at centre-of-mass energies near 183 GeV . These data are used to look for possible signals…”
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19
A measurement of the gluon splitting rate into [formula omitted] pairs in hadronic Z decays
Published in Physics letters. B (01-08-1998)“…A measurement of the fraction of hadronic Z decays in which a gluon splits into a b b ̄ pair, g b b ̄ , is presented using data collected by ALEPH from 1992 to…”
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20
Search for supersymmetry in the photon(s) plus missing energy channels at [formula omitted] GeV and 172 GeV
Published in Physics letters. B (1998)“…Searches for supersymmetric particles in channels with one or more photons and missing energy have been performed with data collected by the ALEPH detector at…”
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