Measurement of the $\Omega_{c}^{0}$ lifetime

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We present the measurement of the lifetime of the Omega_c we have performed using three independent data samples from two different decay modes. Using a Sigma- beam of 340 GeV/c we have obtained clean signals for the Omega_c decaying into Xi- K- pi+ pi+ and Omega- pi+ pi- pi+, avoiding topological c...

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Autores principales: Adamivich, M.I., Albertson, E., Alexandrov, Yu.A., Barberis, D., Beck, M., Bérat, C., Beusch, W., Boss, M., Brons, S., Brückner, W., Buénerd, M., Büscher, C., Charignon, F., Chauvin, J., Chudakov, E., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerassimov, S.G., Godbersen, M., Grafström, P., Haller, Th., Heidrich, M., Hurst, R.B., Königsmann, K., Konorov, I., Martens, K., Martin, Ph., Masciocchi, S., Michaels, R., Müller, U., Paul, S., Povh, B., Ren, Z., Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Schmitt, L., Siebert, H.-W., Simon, A., Smith, V.J., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Walcher, Th., Wälder, G., Werding, R., Wittmann, E., Zavertyaev, M.V., Newaom, C.
Lenguaje:eng
Publicado: 1995
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(95)00979-U
http://cds.cern.ch/record/285166
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author Adamivich, M.I.
Albertson, E.
Alexandrov, Yu.A.
Barberis, D.
Beck, M.
Bérat, C.
Beusch, W.
Boss, M.
Brons, S.
Brückner, W.
Buénerd, M.
Büscher, C.
Charignon, F.
Chauvin, J.
Chudakov, E.
Dropmann, F.
Engelfried, J.
Faller, F.
Fournier, A.
Gerassimov, S.G.
Godbersen, M.
Grafström, P.
Haller, Th.
Heidrich, M.
Hurst, R.B.
Königsmann, K.
Konorov, I.
Martens, K.
Martin, Ph.
Masciocchi, S.
Michaels, R.
Müller, U.
Paul, S.
Povh, B.
Ren, Z.
Rey-Campagnolle, M.
Rosner, G.
Rossi, L.
Rudolph, H.
Schmitt, L.
Siebert, H.-W.
Simon, A.
Smith, V.J.
Thilmann, O.
Trombini, A.
Vesin, E.
Volkemer, B.
Vorwalter, K.
Walcher, Th.
Wälder, G.
Werding, R.
Wittmann, E.
Zavertyaev, M.V.
Newaom, C.
author_facet Adamivich, M.I.
Albertson, E.
Alexandrov, Yu.A.
Barberis, D.
Beck, M.
Bérat, C.
Beusch, W.
Boss, M.
Brons, S.
Brückner, W.
Buénerd, M.
Büscher, C.
Charignon, F.
Chauvin, J.
Chudakov, E.
Dropmann, F.
Engelfried, J.
Faller, F.
Fournier, A.
Gerassimov, S.G.
Godbersen, M.
Grafström, P.
Haller, Th.
Heidrich, M.
Hurst, R.B.
Königsmann, K.
Konorov, I.
Martens, K.
Martin, Ph.
Masciocchi, S.
Michaels, R.
Müller, U.
Paul, S.
Povh, B.
Ren, Z.
Rey-Campagnolle, M.
Rosner, G.
Rossi, L.
Rudolph, H.
Schmitt, L.
Siebert, H.-W.
Simon, A.
Smith, V.J.
Thilmann, O.
Trombini, A.
Vesin, E.
Volkemer, B.
Vorwalter, K.
Walcher, Th.
Wälder, G.
Werding, R.
Wittmann, E.
Zavertyaev, M.V.
Newaom, C.
author_sort Adamivich, M.I.
collection CERN
description We present the measurement of the lifetime of the Omega_c we have performed using three independent data samples from two different decay modes. Using a Sigma- beam of 340 GeV/c we have obtained clean signals for the Omega_c decaying into Xi- K- pi+ pi+ and Omega- pi+ pi- pi+, avoiding topological cuts normally used in charm analysis. The short but measurable lifetime of the Omega_c is demonstrated by a clear enhancement of the signals at short but finite decay lengths. Using a continuous maximum likelihood method we determined the lifetime to be tau(Omega_c) = 55 +13-11(stat) +18-23(syst) fs. This makes the Omega_c the shortest living weakly decaying particle observed so far. The short value of the lifetime confirms the predicted pattern of the charmed baryon lifetimes and demonstrates that the strong interaction plays a vital role in the lifetimes of charmed hadrons.
id cern-285166
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1995
record_format invenio
spelling cern-2851662022-01-14T03:08:49Zdoi:10.1016/0370-2693(95)00979-Uhttp://cds.cern.ch/record/285166engAdamivich, M.I.Albertson, E.Alexandrov, Yu.A.Barberis, D.Beck, M.Bérat, C.Beusch, W.Boss, M.Brons, S.Brückner, W.Buénerd, M.Büscher, C.Charignon, F.Chauvin, J.Chudakov, E.Dropmann, F.Engelfried, J.Faller, F.Fournier, A.Gerassimov, S.G.Godbersen, M.Grafström, P.Haller, Th.Heidrich, M.Hurst, R.B.Königsmann, K.Konorov, I.Martens, K.Martin, Ph.Masciocchi, S.Michaels, R.Müller, U.Paul, S.Povh, B.Ren, Z.Rey-Campagnolle, M.Rosner, G.Rossi, L.Rudolph, H.Schmitt, L.Siebert, H.-W.Simon, A.Smith, V.J.Thilmann, O.Trombini, A.Vesin, E.Volkemer, B.Vorwalter, K.Walcher, Th.Wälder, G.Werding, R.Wittmann, E.Zavertyaev, M.V.Newaom, C.Measurement of the $\Omega_{c}^{0}$ lifetimeParticle Physics - ExperimentWe present the measurement of the lifetime of the Omega_c we have performed using three independent data samples from two different decay modes. Using a Sigma- beam of 340 GeV/c we have obtained clean signals for the Omega_c decaying into Xi- K- pi+ pi+ and Omega- pi+ pi- pi+, avoiding topological cuts normally used in charm analysis. The short but measurable lifetime of the Omega_c is demonstrated by a clear enhancement of the signals at short but finite decay lengths. Using a continuous maximum likelihood method we determined the lifetime to be tau(Omega_c) = 55 +13-11(stat) +18-23(syst) fs. This makes the Omega_c the shortest living weakly decaying particle observed so far. The short value of the lifetime confirms the predicted pattern of the charmed baryon lifetimes and demonstrates that the strong interaction plays a vital role in the lifetimes of charmed hadrons.We present the measurement of the lifetime of the Ω c 0 we have performed using three independent data samples from two different decay modes. Using a Σ − beam of 340 GeV c we have obtained clean signals for the Ω c 0 decaying i Ξ − K − π + π + and Ω − π + π − π + , avoiding topological cuts normally used in charm analysis. The short but measurable lifetime of the Ω c 0 is demonstrated by a clear enhancement of the signals at short but finite decay lengths. Using a continuous maximum likelihood method we determined the lifetime to be τ ω c 0 = 55 −11 +13 (stat) −23 +18 (syst) fs. This makes the Ω c 0 the shortest living weakly decaying particle observed so far. The short value of the lifetime comfirms the predicted pattern of the charmed baryon lifetimes and demonstrates that the strong interaction plays a vital role in the lifetimes of charmed hadrons.We present the measurement of the lifetime of the Omega_c we have performed using three independent data samples from two different decay modes. Using a Sigma- beam of 340 GeV/c we have obtained clean signals for the Omega_c decaying into Xi- K- pi+ pi+ and Omega- pi+ pi- pi+, avoiding topological cuts normally used in charm analysis. The short but measurable lifetime of the Omega_c is demonstrated by a clear enhancement of the signals at short but finite decay lengths. Using a continuous maximum likelihood method we determined the lifetime to be tau(Omega_c) = 55 +13-11(stat) +18-23(syst) fs. This makes the Omega_c the shortest living weakly decaying particle observed so far. The short value of the lifetime confirms the predicted pattern of the charmed baryon lifetimes and demonstrates that the strong interaction plays a vital role in the lifetimes of charmed hadrons.hep-ex/9507004MPI-H-V27-1995CERN-PPE-95-105MPI-H-95-V-27oai:cds.cern.ch:2851661995-07-18
spellingShingle Particle Physics - Experiment
Adamivich, M.I.
Albertson, E.
Alexandrov, Yu.A.
Barberis, D.
Beck, M.
Bérat, C.
Beusch, W.
Boss, M.
Brons, S.
Brückner, W.
Buénerd, M.
Büscher, C.
Charignon, F.
Chauvin, J.
Chudakov, E.
Dropmann, F.
Engelfried, J.
Faller, F.
Fournier, A.
Gerassimov, S.G.
Godbersen, M.
Grafström, P.
Haller, Th.
Heidrich, M.
Hurst, R.B.
Königsmann, K.
Konorov, I.
Martens, K.
Martin, Ph.
Masciocchi, S.
Michaels, R.
Müller, U.
Paul, S.
Povh, B.
Ren, Z.
Rey-Campagnolle, M.
Rosner, G.
Rossi, L.
Rudolph, H.
Schmitt, L.
Siebert, H.-W.
Simon, A.
Smith, V.J.
Thilmann, O.
Trombini, A.
Vesin, E.
Volkemer, B.
Vorwalter, K.
Walcher, Th.
Wälder, G.
Werding, R.
Wittmann, E.
Zavertyaev, M.V.
Newaom, C.
Measurement of the $\Omega_{c}^{0}$ lifetime
title Measurement of the $\Omega_{c}^{0}$ lifetime
title_full Measurement of the $\Omega_{c}^{0}$ lifetime
title_fullStr Measurement of the $\Omega_{c}^{0}$ lifetime
title_full_unstemmed Measurement of the $\Omega_{c}^{0}$ lifetime
title_short Measurement of the $\Omega_{c}^{0}$ lifetime
title_sort measurement of the $\omega_{c}^{0}$ lifetime
topic Particle Physics - Experiment
url https://dx.doi.org/10.1016/0370-2693(95)00979-U
http://cds.cern.ch/record/285166
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