Publications
294 results found
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, Search for new physics in energetic single photon production in e(+)e(-) annihilation at the Z resonance, PHYSICS LETTERS B, Vol: 412, Pages: 201-209, ISSN: 0370-2693
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- Citations: 71
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, Study of hadronic events and measurements of alpha(s) between 30 and 91 GeV, PHYSICS LETTERS B, Vol: 411, Pages: 339-353, ISSN: 0370-2693
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- Citations: 29
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, Search for anomalous four-jet events in e(+)e(-) annihilation at root s=130-172 GeV, PHYSICS LETTERS B, Vol: 411, Pages: 330-338, ISSN: 0370-2693
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- Citations: 1
Acciarri M, Adriani O, Aguilar-Benitez M, et al., 1997, Search for anomalous four-jet events in e<sup>+</sup>e<sup>-</sup> annihilation at √s = 130-172 GeV, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol: 411, Pages: 330-338, ISSN: 0370-2693
A study of hadronic events with high jet-multiplicity is performed using the data sample collected by the L3 experiment at LEP at √s = 130-172 GeV. The observed event rates agree with the Standard Model predictions and upper limits are set on the production cross section of pairs of heavy particles that decay hadronically. © 1997 Elsevier Science B.V.
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, Search for the standard model Higgs boson in e(+)e(-) interactions at 161<=root s<=172 GeV, PHYSICS LETTERS B, Vol: 411, Pages: 373-386, ISSN: 0370-2693
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- Citations: 41
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, Cross section of hadron production in gamma gamma collisions at LEP, PHYSICS LETTERS B, Vol: 408, Pages: 450-464, ISSN: 0370-2693
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- Citations: 67
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, Inclusive J, Psi' and Chi(c) production in hadronic Z decays, PHYSICS LETTERS B, Vol: 407, Pages: 351-360, ISSN: 0370-2693
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- Citations: 4
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, Production of e, mu and tau pairs in untagged two-photon collisions at LEP, PHYSICS LETTERS B, Vol: 407, Pages: 341-350, ISSN: 0370-2693
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- Citations: 7
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, Measurement of hadron and lepton-pair production at 161 GeV<root s<172 GeV at LEP, PHYSICS LETTERS B, Vol: 407, Pages: 361-376, ISSN: 0370-2693
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- Citations: 27
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, K-S(0) and Lambda production in quark and gluon jets at LEP, PHYSICS LETTERS B, Vol: 407, Pages: 389-401, ISSN: 0370-2693
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- Citations: 26
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, Measurement of W-pair cross sections in e(+)e(-) interactions at root s=172 GeV and W-decay branching fractions, PHYSICS LETTERS B, Vol: 407, Pages: 419-431, ISSN: 0370-2693
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- Citations: 15
Acciarri M, Adriani O, Aguilar-Benitez M, et al., 1997, QCD studies and determination of α<inf>s</inf> in e<sup>+</sup>e<sup>-</sup> collisions at √s = 161 GeV and 172 GeV L3 Collaboration, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol: 404, Pages: 390-402, ISSN: 0370-2693
We present a study of the structure of hadronic events recorded by the L3 detector at LEP at the center of mass energies of 161 and 172 GeV. The data sample corresponds to an integrated luminosity of 21.25 pb-1 collected during the high energy runs of 1996. The distributions of event shape variables and the energy dependence of their mean values are well reproduced by QCD models. From a comparison of the data with resummed script O sign (α2s) QCD calculations, we determine the strong coupling constant at the two energies. Combining this with our earlier measurements we find that the strong coupling constant decreases with increasing energy as expected in QCD. © 1997 Published by Elsevier Science B.V.
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, QCD studies and determination of alpha(s) in e(+)e(-) collisions at root s=161 GeV and 172 GeV, PHYSICS LETTERS B, Vol: 404, Pages: 390-402, ISSN: 0370-2693
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- Citations: 55
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, Production of single W bosons at LEP, PHYSICS LETTERS B, Vol: 403, Pages: 168-176, ISSN: 0370-2693
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- Citations: 26
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, Search for excited leptons in e(+)e(-) annihilation at root s=161 GeV, PHYSICS LETTERS B, Vol: 401, Pages: 139-149, ISSN: 0370-2693
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- Citations: 19
Acciarri M, Adriani O, Aguilar-Benitez M, et al., 1997, Search for excited leptons in e<sup>+</sup>e<sup>-</sup> annihilation at √s = 161 GeV, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol: 401, Pages: 139-149, ISSN: 0370-2693
A search for excited leptons e*, μ*, τ* and ν*e in e+e- collisions at √s = 161 GeV is performed using the 10.8 pb-1 of data collected by the L3 detector at LEP. No evidence has been found for their existence. From an analysis of the expected ℓ*ℓ* pair production in the channels eeγγ, μμγγ, ττγγ, eeWW, and ννγγ, the lower mass limits at 95% C.L. are 79.7 GeV for e*, 79.9 GeV for μ*, 79.3 GeV for τ* and 71.2 GeV for ν*e assuming the same couplings as for standard leptons. From an analysis of the expected ℓℓ* single production in channels eeγ, μμγγ, τγγ, νeeW and ννγ, the upper limits on the couplings λ/mℓ* up to mℓ* = 161 GeV are determined. © 1997 Published by Elsevier Science B.V.
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, Pair-production of W bosons in e(+)e(-) interactions at root s=161 GeV, PHYSICS LETTERS B, Vol: 398, Pages: 223-238, ISSN: 0370-2693
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- Citations: 63
Acciarri M, Adrian O, Aguilar-Benitez M, et al., 1997, Measurement of D<sup>-</sup><inf>s</inf> → τ<sup>-</sup> v̄<inf>τ</inf> and a new limit for B<sup>-</sup> → τ<sup>-</sup>v̄<inf>τ</inf>, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol: 396, Pages: 327-337, ISSN: 0370-2693
Using a data sample of 1 475000 Z → qq̄(γ) events collected during 1994 with the L3 detector at LEP, we have studied the purely leptonic decays of heavy flavour mesons, D-s → τ-v̄τ and B- → τ-v̄τ. A signal is observed in the invariant mass distribution M(γD-s) corresponding to the decay sequence D*-s → γD-s, D-s → τ-v̄τ, τ- → l-v̄lvτ. The branching fraction for D-s → τ-v̄τ decays is measured to be B(D-s → τ-v̄τ) = 0.074 ± 0.028(stat) ± 0.016(syst) ± 0.018(norm). No signal of B- → τ-v̄τ decays is observed in the data, corresponding to an upper limit on the branching fraction B (B- → τ-v̄τ) < 5.7 × 10-4 at 90% CL. © 1997 Elsevier Science B.V.
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, Measurement of D-s(-)->tau(-)(nu)over-bar(tau) and a new limit for B-->tau(-)(nu)over-bar(tau center dot), PHYSICS LETTERS B, Vol: 396, Pages: 327-337, ISSN: 0370-2693
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- Citations: 71
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, Measurement of inclusive omega and eta' production in hadronic Z decays, PHYSICS LETTERS B, Vol: 393, Pages: 465-476, ISSN: 0370-2693
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- Citations: 18
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, Study of the weak charged hadronic current in b decays, PHYSICS LETTERS B, Vol: 393, Pages: 477-486, ISSN: 0370-2693
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, Search for neutral B meson decays to two charged leptons, PHYSICS LETTERS B, Vol: 391, Pages: 474-480, ISSN: 0370-2693
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- Citations: 14
Acciarri M, Adriani O, AguilarBenitez M, et al., 1997, Search for exclusive B decays to J and eta or pi(0) with the L3 detector, PHYSICS LETTERS B, Vol: 391, Pages: 481-490, ISSN: 0370-2693
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- Citations: 6
Acciarri M, Adriani O, AguilarBenitez M, et al., 1996, Measurement of the lifetime of the tau lepton, PHYSICS LETTERS B, Vol: 389, Pages: 187-196, ISSN: 0370-2693
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- Citations: 6
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