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Start Over Author "C. Delfino" Journal physics letters b
3 results on '"C. Delfino"'

1. Additional evidence for B0_B0 mixing

Author

J. R. Johnson, L. J. Rosenberg, M. W. Gettner, L. Lavine, M. Piccolo, J. P. Venuti, R. Messner, H. R. Band, L. J. Moss, G. P. Goderre, I. M. Peruzzi, R. de Sangro, F. Muller, R. Prepost, N. Qi, R. E. Leedy, J. Pyrlik, D. M. Ritson, G. B. Chadwick, M. C. Delfino, D. E. Wiser, Piero Giorgio Verdini, Tiziano Camporesi, H. N. Nelson, E. von Goeler, Roy Weinstein, D. E. Groom, J. C. Sleeman, W. T. Ford, R. W. Zdarko, R. B. Hurst, J. R. Smith, T. Maruyama, and Alexander Lincoln Read

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Annihilation, Value (computer science), Mixing (physics)
Abstract

The rate of like-charge dimuons has been measured with the MAC detector in hardonic events produced in e + e − annihilation at √ s =29 GeV. If the observed excess is attributed to B 0 B 0 mixing, the corresponding value of the mixing parameter χ = Γ (B→ μ − X)/ Γ (B→ μ ± X) is χ =0.21 +0.29 −0.15 and χ >0.02 at 90% CL.

Published
1988

2. A measurement of the forward-backward charge asymmetry at √s=29 GeV

Author

M. W. Gettner, I. M. Peruzzi, R. B. Hurst, J. R. Smith, L. J. Moss, R. de Sangro, F. Muller, R. Prepost, D. M. Ritson, M. C. Delfino, T. Maruyama, R. Messner, M. Piccolo, H. R. Band, R. E. Leedy, Alexander Lincoln Read, G. B. Chadwick, J. P. Venuti, Tiziano Camporesi, L. J. Rosenberg, R. W. Zdarko, J. R. Johnson, D. E. Wiser, H. N. Nelson, G. P. Goderre, N. Qi, T. L. Lavine, J. Pyrlik, Roy Weinstein, D. E. Groom, J. C. Sleeman, W. T. Ford, Piero Giorgio Verdini, and E. von Goeler

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Muon, media_common.quotation_subject, Charge (physics), Forward backward, Asymmetry, Mixing (physics), media_common
Abstract

High p ⊥ inclusive muon events produced in e + e − annihilations at √ s =29 GeV have been analyzed to obtain a measurement of the b b forward-backward charge asymmetry. The result A b =0.034±0.070±0.035 differs from the theoretical expectation (−0.16) unless substantial B 0  B 0 mixing is assumed.

Published
1989

3. Measurements of tau decays to three pions

Author

J. P. Venuti, R. Prepost, Tiziano Camporesi, M. C. Delfino, R. B. Hurst, J.R. Johnson, H. R. Band, F. Muller, D. M. Ritson, R. W. Zdarko, Roy Weinstein, Alexander Lincoln Read, L. J. Moss, J. Pyrlik, Piero Giorgio Verdini, M. W. Gettner, R. Messner, T. Maruyama, E. von Goeler, T. L. Lavine, R. E. Leedy, I. M. Peruzzi, N. Qi, G. B. Chadwick, J. R. Smith, H. N. Nelson, L. J. Rosenberg, G. P. Goderre, R. de Sangro, M. Piccolo, D. E. Groom, J. C. Sleeman, W. T. Ford, and D. E. Wiser

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Pion, Meson, Electron–positron annihilation, Nuclear Theory, Detector, High Energy Physics::Experiment, Nuclear Experiment, Storage ring
Abstract

We reports the result of a study of a tau decays with three pions in the final state (τ±→π±π+π−υτ and τ ±→π±π0π0υτ) from data accumulated with the MAC detector operating at the PEP storage ring. The branching fractions for these modes are measured to be 0.070±0.003±0.007 and, with assumptions discussed in the text, 0.087±0.004±0.011, respectively. Assuming that these final states result from the decay of the a1 meson, we measure the resonant parameters of the a1 with the three charged pion sample to be ma1=1166±18±11 MeV and γa1=405±75±25 MeV, and with the one charged plus two neutral pions sample to be ma1=1164±41±23 MeV and γa1=419±108±57 MeV.

Published
1987

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