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4. Production of V0 pairs in the hyperon experiment WA89

Author

Adamovich, M.I., Alexandrov, Yu.A., Baranov, S.P., Barberis, D., Beck, M., Bérat, C., Beusch, W., Boss, M., Brons, S., Brückner, W., Buénerd, M., Busch, C., Büscher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerassimov, S.G., Godbersen, M., Grafström, P., Haller, T., Heidrich, M., Hubbard, E., Hurst, R.B., Königsmann, K., Konorov, I., Kovalenko, S., Keller, N., Martens, K., Martin, P., Masciocchi, S., Michaels, R., Müller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ren, Z., Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H.-W., Simon, A., Smith, V., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Walcher, T., Wälder, G., Werding, R., Wittmann, E., Zavertyaev, M.V., and The WA89 Collaboration

Published
2007
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5. Observation of a resonance in the KSp decay channel at a mass of 1765 MeV/c2

Author

Adamovich, M.I., Alexandrov, Y.A., Baranov, S.P., Barberis, D., Beck, M., Bérat, C., Beusch, W., Boss, M., Brons, S., Brückner, W., Buénerd, M., Busch, C., Büscher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerassimov, S.G., Godbersen, M., Grafström, P., Haller, T., Heidrich, M., Hubbard, E., Hurst, R.B., Königsmann, K., Konorov, I., Keller, N., Martens, K., Martin, P., Masciocchi, S., Michaels, R., Müller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ren, Z., Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H.-W., Simon, A., Smith, V., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Walcher, T., Wälder, G., Werding, R., Wittmann, E., and Zavertyaev, M.V.

Published
2007
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6. Charge asymmetries for D, ${\rm D_s}$ and $\Lambda_{\rm c}$ production in $\sigma^-$ -nucleus interactions at 340 GeV/c

Author

Adamovich, M.I., Alexandrov, Y.A., Barberis, D., Beck, M., Berat, C., Beusch, W., Boss, M., Brons, S., Bruckner, W., Buenerd, M., Busch, C., Buscher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerassimov, S.G., Godbersen, M., Grafstrom, P., Haller, T., Heidrich, M., Hubbard, E., Hurst, R.B., Konigsmann, Kay, Konorov, I., Keller, N., Martens, K., Martin, P., Masciocchi, S., Michaels, R., Muller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ransome, R., Ren, Z., Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H.W., Simon, A., Smith, V.J., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Walcher, T., Walder, G., Werding, R., Wittmann, E., and Zavertyaev, M.V.

Subjects
Quark, Physics, Particle physics, Large Hadron Collider, Physics and Astronomy (miscellaneous), High Energy Physics::Lattice, High Energy Physics::Phenomenology, FOS: Physical sciences, Sigma, Charge (physics), Lambda, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), medicine.anatomical_structure, medicine, Physics::Accelerator Physics, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, Engineering (miscellaneous), Nucleus, Particle Physics - Experiment, Beam (structure)
Abstract

CERN experiment WA89 has studied charmed particles produced by a Sigma^- beam at 340 GeV/c on nuclear targets. Production of particles which have light quarks in common with the beam is compared to production of those which do not. Considerable production asymmetries between D^- and D^p, D_s^ and D_s^+ and Lambda_c and Antilambda_c are observed. The results are compared with pion beam data and with theoretical calculations., LaTeX ; 16 pages including 4 ps figures

Published
1999
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7. Search for the pentaquark candidate theta(1540)(+) in the hyperon beam experiment wa89

Author

Adamovich, M.I., Alexandrov, Yu.A., Baranov, S.P., Barberis, D., Beck, M., Berat, C., Beusch, W., Boss, M., Brons, S., Brueckner, W., Buenerd, M., Busch, C., Buescher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerassimov, S.G., Godbersen, M., Grafstroem, P., Haller, T., Heidrich, M., Hubbard, E., Hurst, R.B., Koenigsmann, K., Konorov, I., Keller, N., Martens, K., Martin, P., Masciocchi, S., Michaels, R., Mueller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ransome, R.D., Ren, Zhuoxiang, Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H.W., Simon, A., Smith, V.J., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Waelcher, T., Waelder, G., Werding, R., Wittmann, E., Zavertyaev, M.V., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), and WA89

Subjects
hyperon decay, 13.85.Rm, 25.80.Pw, hyperon-nucleus reactions, kaon hadronic decay, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], baryon hadronic decay, hyperon resonances, Particle Physics - Experiment, High Energy Physics - Experiment
Abstract

We report on a high-statistics search for the \t1540 resonance in $\Sigma^-$-nucleus collisions at 340 \gevc1 . No evidence for this resonance was found in our data sample which contains 13 millions $K^0_s \to \pi^+\pi^- $ decays above background. For the decay channel $\Theta^+ \to K^0_s p$ and the kinematic range $x_F>$ 0.05 we find the production cross section to be $BR(\Theta^+ \to K^0_s p)\cdot \sigma_0, Comment: 5 pages, 4 figures

Published
2005
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8. Search for the exotic $\Xi^{--}(1860)$ Resonance in 340GeV/c $\Sigma^-$-Nucleus Interactions

Author

Adamovich, M.I., Alexandrov, Yu.A., Baranov, S.P., Barberis, D., Beck, M., Berat, C., Beusch, W., Boss, M., Brons, S., Bruckner, W., Buenerd, M., Busch, C., Buscher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerassimov, S.G., Godbersen, M., Grafstrom, P., Haller, Th., Heidrich, M., Hubbard, E., Hurst, R.B., Konigsmann, Kay, Konorov, I., Keller, N., Martens, K., Martin, Ph., Masciocchi, S., Michaels, R., Muller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ransome, R., Ren, Z., Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H.-W., Simon, A., Smith, V.J., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Walcher, Th., Walder, G., Werding, R., Wittmann, E., and Zavertyaev, M.V.

Subjects
Particle Physics - Experiment, Nuclear Physics
Abstract

We report on a high statistics search for the $\Xi^{--}(1860)$ resonance in $\Sigma^-$-nucleus collisions at 340GeV/c. No evidence for this resonance is found in our data sample which contains 676000 $\Xi^-$ candidates above background. For the decay channel $\Xi^{--}(1860) \to \Xi^-\pi^-$ and the kinematic range 0.15$

Published
2004

9. Search for the exotic $\Xi^{--}$ (1860) resonance in 340 GeV/c $\Sigma^{-}$-nucleus interactions

Author

Adamovich, M.I., Alexandrov, Yu.A., Baranov, S.P., Barberis, D., Beck, M., Berat, C., Beusch, W., Boss, M., Brons, S., Brueckner, W., Buenerd, M., Busch, C., Buescher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerassimov, S.G., Godbersen, M., Grafstroem, P., Haller, T., Heidrich, M., Hubbard, E., Hurst, R.B., Koenigsmann, K., Konorov, I., Keller, N., Martens, K., Martin, P., Masciocchi, S., Michaels, R., Mueller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ransome, R.D., Ren, Zhuoxiang, Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H.W., Simon, A., Smith, V.J., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Waelcher, T., Waelder, G., Werding, R., Wittmann, E., Zavertyaev, M.V., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), and WA89

Subjects
13.85.Rm, 25.80.Pw, pion production, baryon hadronic decay, nuclei with mass number 59 to 89, hyperon production, hyperon decay, Xi baryons, statistical analysis, nuclei with mass number 6 to 19, hyperon-nucleus reactions, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, hyperon resonances, Nuclear Experiment
Abstract

We report on a high statistics search for the Xi––(1860) resonance in Sigma–-nucleus collisions at 340 GeV/c. No evidence for this resonance is found in our data sample which contains 676000 Xi– candidates above background. For the decay channel Xi––(1860)-->Xi–pi– and the kinematic range 0.15

Published
2004
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10. A measurement of $\Xi^{-}$ polarization in inclusive production by $\Sigma^{-}$ of 340 GeV/c in C and Cu targets

Author

Adamovich, M.I., Alexandrov, Yu.A., Baranov, S.P., Barberis, D., Beck, M., Berat, C., Beusch, W., Boss, M., Brons, S., Brueckner, W., Buenerd, M., Busch, C., Buescher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerassimov, S.G., Godbersen, M., Grafstroem, P., Haller, T., Heidrich, M., Hubbard, E., Hurst, R.B., Koenigsmann, K., Konorov, I., Keller, N., Martens, K., Martin, P., Masciocchi, S., Michaels, R., Mueller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ransome, R.D., Ren, Zhuoxiang, Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H.W., Simon, A., Smith, V.J., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Waelcher, T., Waelder, G., Werding, R., Wittmann, E., Zavertyaev, M.V., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), and WA89

Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Abstract

We have measured the polarization of Ξ− hyperons produced inclusively by a Σ− beam of 340 GeV/c momentum in nuclear targets. From a sample of 880000 identified Ξ− decays, polarizations were determined in the range 0 < x F < 0.9 and pt≤1.6 GeV/c. The polarization w.r.t. the production normal is negative for xF≥ 0.3. At fixed values of x F , its magnitude increases with p t to maximum values which reach about 20% at large x F .

Published
2004
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11. V0, anti-Xi+ and Omega- inclusive production cross-sections measured in hyperon experiment WA89 at CERN

Author

Adamovich, M.I., Alexandrov, Y.A., Baranov, S.P., Barberis, D., Beck, M., Bérat, C., Beusch, W., Boss, M., Brons, S., Brückner, W., Buénerd, M., Busch, C., Büscher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, P., Engelfried, J., Faller, F., Fournier, A., Gerassimov, S.G., Godbersen, M., Grafström, P., Haller, T., Heidrich, M., Hubbard, E., Hurst, R.B., Königsmann, K., Konorov, I., Keller, N., Martens, K., Martin, P., Masciocchi, S., Michaels, R., Müller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ransome, R., Ren, Z., Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H.-W., Simon, A., Smith, V., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Walcher, T., Wälder, G., Werding, R., Wittmann, E., Zavertyaev, M.V., and Publica

Abstract

We report on a measurement of the inclusive cross sections of , , Ks0, + and - production by - and - of 345 GeV/c momentum and by neutrons of 260 GeV/c mean momentum in copper and carbon. The differential cross sections as function of pt2 show a distinct non-gaussian behavior above 1.2 (GeV/c)2. A comparison of the xF-dependence of , and K0 production with calculations using PYTHIA and the QGSM model is discussed.

Published
2003

12. Spectra and correlations of $\Lambda$ and $\bar\Lambda$ produced in 340-GeV/c $\Sigma^{-}$ + C and 260-GeV/c n + C interactions

Author

Adamovich, M.I., Alexandrov, Yu.A., Baranov, S.P., Barberis, D., Beck, M., Berat, C., Beusch, W., Boss, M., Brons, S., Brueckner, W., Buenerd, M., Busch, C., Buescher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerassimov, S.G., Godbersen, M., Grafstroem, P., Haller, T., Heidrich, M., Hubbard, E., Hurst, R.B., Koenigsmann, K., Konorov, I., Keller, N., Martens, K., Martin, P., Masciocchi, S., Michaels, R., Mueller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ransome, R.D., Ren, Zhuoxiang, Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H.W., Simon, A., Smith, V.J., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Waelcher, T., Waelder, G., Werding, R., Wittmann, E., Zavertyaev, M.V., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), and WA89

Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment
Abstract

We have measured the production of strange baryons and antibaryons in 340-GeV/c Σ−+C and 260-GeV/c n+C interactions. The single xF distributions show the expected leading particle effect, and the single pt2 distributions show a distinct nonthermal behavior. The xF distributions of Λ-Λ pairs indicate two different phase space distributions for the two coincident baryons. On the other hand two Λ¯’s show identical distributions. Momentum conservation during the formation process may represent a significant source for the observed behavior. (APS)

Published
2002
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13. Determination of the total $c\overline{c}$ production cross section in $340 GeV/c \Sigma^{-}$ - nucleus interactions

Author

Adamovich, M.I., Aleksandrov, Yu.A., Barberis, D., Beck, M., Berat, C., Beusch, W., Boss, M., Brons, S., Brueckner, W., Buenerd, M., Busch, C., Buescher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerasimov, S.G., Godbersen, M., Grafstrom, P., Haller, T., Heidrich, M., Hubbard, E., Hurst, R.B., Konigsmann, K., Konorov, I., Keller, N., Martens, K., Martin, P., Masciocchi, S., Michaels, R., Muller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ransome, R.D., Ren, Zhuoxiang, Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H.W., Simon, A., Smith, V.J., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Walcher, T., Walder, G., Werding, R., Wittmann, E., Zavertyaev, M.V., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), and WA89

Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment
Abstract

The production of charmed particles by Sigma- of 340 Gev/c momentum was studied in the hyperon beam experiment WA89 at the CERN-SPS, using the Omega-spectrometer. In two data-taking periods in 1993 and 1994 an integrated luminosity of 1600 microb^-1 on copper and carbon targets was recorded. From the reconstruction of 930 +- 90 charm particle decays in 10 decay channels production cross sections for D, antiD, Ds and Lambdac were determined in the region xF>0. Assuming an A^1 dependence of the cross section on the nucleon number, we calculate a total ccbar production cross section of sigma(x_F > 0) = 5.3+- 0.4(stat)+-1.0(syst)+1.0(Xi_c) microb per nucleon. The last term is an upper limit on the unknown contribution from charmed-strange baryon production.

Published
2000

14. Determination of the total $c\overline{c}$ production cross section in 340 GeV/c $\Sigma^{-}$ - nucleus interactions

Author

Adamovich, M.I., Alexandrov, Yu.A., Barberis, D., Beck, M., Berat, C., Beusch, W., Boss, M., Brons, S., Bruckner, W., Buenerd, M., Busch, C., Buscher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerassimov, S.G., Godbersen, M., Grafstrom, P., Haller, T., Heidrich, M., Hubbard, E., Hurst, R.B., Konigsmann, Kay, Konorov, I., Keller, N., Martens, K., Martin, P., Masciocchi, S., Michaels, R., Muller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ransome, R., Ren, Z., Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H.W., Simon, A., Smith, V.J., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Walcher, T., Walder, G., Werding, R., Wittmann, E., and Zavertyaev, M.V.

Subjects
High Energy Physics::Experiment, Nuclear Experiment, Particle Physics - Experiment
Abstract

The production of charmed particles by Sigma- of 340 Gev/c momentum was studied in the hyperon beam experiment WA89 at the CERN-SPS, using the Omega-spectrometer. In two data-taking periods in 1993 and 1994 an integrated luminosity of 1600 microb^-1 on copper and carbon targets was recorded. From the reconstruction of 930 +- 90 charm particle decays in 10 decay channels production cross sections for D, antiD, Ds and Lambdac were determined in the region xF>0. Assuming an A^1 dependence of the cross section on the nucleon number, we calculate a total ccbar production cross section of sigma(x_F > 0) = 5.3+- 0.4(stat)+-1.0(syst)+1.0(Xi_c) microb per nucleon. The last term is an upper limit on the unknown contribution from charmed-strange baryon production. The production of charmed particles by Sigma- of 340 Gev/c momentum was studied in the hyperon beam experiment WA89 at the CERN-SPS, using the Omega-spectrometer. In two data-taking periods in 1993 and 1994 an integrated luminosity of 1600 microb^-1 on copper and carbon targets was recorded. From the reconstruction of 930 +- 90 charm particle decays in 10 decay channels production cross sections for D, antiD, Ds and Lambdac were determined in the region xF>0. Assuming an A^1 dependence of the cross section on the nucleon number, we calculate a total ccbar production cross section of sigma(x_F > 0) = 5.3+- 0.4(stat)+-1.0(syst)+1.0(Xi_c) microb per nucleon. The last term is an upper limit on the unknown contribution from charmed-strange baryon production. The production of charmed particles by Sigma- of 340 Gev/c momentum was studied in the hyperon beam experiment WA89 at the CERN-SPS, using the Omega-spectrometer. In two data-taking periods in 1993 and 1994 an integrated luminosity of 1600 microb^-1 on copper and carbon targets was recorded. From the reconstruction of 930 +- 90 charm particle decays in 10 decay channels production cross sections for D, antiD, Ds and Lambdac were determined in the region xF>0. Assuming an A^1 dependence of the cross section on the nucleon number, we calculate a total ccbar production cross section of sigma(x_F > 0) = 5.3+- 0.4(stat)+-1.0(syst)+1.0(Xi_c) microb per nucleon. The last term is an upper limit on the unknown contribution from charmed-strange baryon production. The production of charmed particles by Sigma- of 340 Gev/c momentum was studied in the hyperon beam experiment WA89 at the CERN-SPS, using the Omega-spectrometer. In two data-taking periods in 1993 and 1994 an integrated luminosity of 1600 microb^-1 on copper and carbon targets was recorded. From the reconstruction of 930 +- 90 charm particle decays in 10 decay channels production cross sections for D, antiD, Ds and Lambdac were determined in the region xF>0. Assuming an A^1 dependence of the cross section on the nucleon number, we calculate a total ccbar production cross section of sigma(x_F > 0) = 5.3+- 0.4(stat)+-1.0(syst)+1.0(Xi_c) microb per nucleon. The last term is an upper limit on the unknown contribution from charmed-strange baryon production.

Published
2000

15. Determination of the total cc production cross section in 340 GeV/c Sigma- nucleus interactions

Author

Adamovich, M.I., Alexandrov, Y.A., Barberis, D., Beck, M., Bérat, C., Beusch, W., Boss, M., Brons, S., Brückner, W., Buénerd, M., Busch, C., Büscher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerassimov, S.G., Godbersen, M., Grafström, P., Haller, T., Heidrich, M., Hubbard, E., Hurst, R.B., Königsmann, K., Konorov, I., Keller, N., Martens, K., Martin, P., Masciocchi, S., Michaels, R., Müller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ransome, R.D., Ren, Z., Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H.-W., Simon, A., Smith, V.J., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Walcher, T., Wälder, G., Werding, R., Wittmann, E., Zavertyaev, M.V., and Publica

Abstract

The production of charmed particles by 340 GeV/c momentum - was studied in the hyperon beam experiment WA89 at the CERN-SPS, using the -spectrometer. In two data-taking periods in 1993 and 1994 an integrated luminosity of 1600 b-1 on copper and carbon targets was recorded. From the reconstruction of 930 ± 90 charm particle decays in 10 decay channels production cross sections for D, D, Ds- and c+ were determined in the region xF > 0. Assuming an A1 dependence of the cross section on the nucleon number, we calculate a total cc production cross section of cc(xF > 0) = 5.3 ± 0.4 (stat) ± 1.0 (syst) + 1.0 (c) b per nucleon. The last term is an upper limit on the unknown contribution from charmed-strange baryon production.

Published
2000

16. Determination of the total c(c)over-bar production cross section in 340 GeV/c Sigma(-)-nucleus interactions

Author

Adamovich, M.I., Alexandrov, Y.A., Barberis, D., Beck, M., Berat, C., Beusch, W., Boss, M., Brons, S., Bruckner, W., Buenerd, M., Busch, C., Buscher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerassimov, S.G., Godbersen, M., Grafstrom, P., Haller, T., Heidrich, M., Hubbard, E., Hurst, R.B., Konigsmann, K., Konorov, I., Keller, N., Martens, K., Martin, P., Masciocchi, S., Michaels, R., Muller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ransome, R.D., Ren, Z., Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H.W., Simon, A., Smith, V.J., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Walcher, T., Walder, G., Werding, R., Wittmann, E., and Zavertyaev, M.V.

Subjects
High Energy Physics::Experiment, Nuclear Experiment, QC
Abstract

The production of charmed particles by 340 GeV/c momentum Sigma(-) was studied in the hyperon beam experiment WA89 at the CERN-SPSI using the Omega-spectrometer. In two data-taking periods in 1993 and 1994 an integrated luminosity of 1600 mu b(-1) on copper and carbon targets was recorded. From the reconstruction of 930 +/- 90 charm particle decays in 10 decay channels production cross sections for D! D, D-s(-) and Lambda(c)(+) were determined in the region x(F) gt 0. Assuming an Al dependence of the cross section on the nucleon number, we calculate a total c (c) over bar production cross section of sigma(c (c) over bar)(x(F) gt 0) = 5.3 +/- 0.4 (stat) +/- 1.0 (syst) + 1.0 (Xi(c)) mu b per nucleon. The last term is an upper limit on the unknown contribution from charmed-strange baryon production.

Published
2000

17. Production of xi resonances in sigma induced reactions at 345 GeV/c

Author

Adamovich, M.I., Alexandrov, Yu.A., Baranov, S.P., Barberis, D., Beck, M., Berat, C., Beusch, W., Boss, M., Brons, S., Bruckner, W., Buenerd, M., Busch, C., Buscher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerassimov, S.G., Godbersen, M., Grafstrom, P., Haller, T., Heidrich, M., Hubbard, E., Hurst, R.B., Konigsmann, Kay, Konorov, I., Keller, N., Martens, K., Martin, P., Masciocchi, S., Michaels, R., Muller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ransome, R.D., Ren, Z., Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H.W., Simon, A., Smith, V.J., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Walcher, T., Walder, G., Werding, R., Wittmann, E., and Zavertyaev, M.V.

Subjects
Nuclear Experiment, Particle Physics - Experiment
Abstract

We report on a measurement of the differential and total cross sections of inclusive production of Xi resonances in Sigma - nucleus collisions at 345 GeV/c. We report on a measurement of the differential and total cross sections of inclusive production of Xi resonances in Sigma - nucleus collisions at 345 GeV/c.

Published
1999

18. First observation of $\Sigma^{-}-e^{-}$ elastic scattering in the hyperon beam experiment WA89 at CERN

Author

Adamovich, M.I., Aleksandrov, Yu.A., Barberis, D., Beck, M., Berat, C., Beusch, W., Boss, M., Brons, S., Brueckner, W., Buenerd, M., Busch, C., Buescher, C., Charignon, F., Chauvin, J., Chudakov, E.A., Dersch, U., Dropmann, F., Engelfried, J., Faller, F., Fournier, A., Gerasimov, S.G., Godbersen, M., Grafstrom, P., Haller, T., Heidrich, M., Hubbard, E., Hurst, R.B., Konigsmann, K., Konorov, I., Keller, N., Martens, K., Martin, P., Masciocchi, S., Michaels, R., Muller, U., Neeb, H., Newbold, D., Newsom, C., Paul, S., Pochodzalla, J., Potashnikova, I., Povh, B., Ransome, R.D., Ren, Zhuoxiang, Rey-Campagnolle, M., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H.W., Simon, A., Smith, V.J., Thilmann, O., Trombini, A., Vesin, E., Volkemer, B., Vorwalter, K., Walcher, T., Walder, G., Werding, R., Wittmann, E., Zavertyaev, M.V., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), and WA89

Subjects
[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published
1999

19. Measurement of the polarization of $\Lambda^{0}, \bar \Lambda^{0}, \Sigma^{+}$ and $\Xi^{-}$ produced in a $\Sigma^{-}$ beam of 330 GeV/c

Author

Adamovich, M I., Albertson, E., Alexandrov Yu, A., Barberis, D., Berat, C., Beusch, W., Brenzinger, K.H., Brons, S., Brueckner, W., Brunengo, A., Buenerd, M., Charignon, F., Chauvin, J., Chudakov, E A., Dameri, M., Dropmann, F., Engelfried, J., Faller, F., French, B.R., Gerassimov, S.G., Godbersen, M., Grafstroem, P., Hostachy, J.Y., Hurst, R.B., Kallakowsky, Th., Kluth, S., Lauber, H.M., Lennert, P., Ljungfelt, S., Martens, K., Martin, P., Michaels, R., Mueller, U., Newsom, C., Osculati, B., Paul, S., Povh, B., Rey-Campagnolle, M., Rieseberg, H., Roehrich, K., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H W., Simon, A., Trombini, A., Touillon, R., Volkemer, B., Walcher, T., Waelder, G., Wenzel, A., Zavertyaev, M.V., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), and WA89

Subjects
school library, documentalist, information storage, secondary education, ComputingMilieux_COMPUTERSANDEDUCATION, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], librarian, information retrieval, computer network, research method
Abstract

Internet at the school change the way to see the documentation and the role of the school libraries. If the practices of the school librarian always dependent on multiple factors could be controlled - before the Web - today it is necessary to think the organization of documentation and its actors in a more complex way in order to deliver practices in response to new stakes of the « information society ».

Published
1995

20. New physics results from the hyperon beam experiment WA89

Author

Adamovich, M I., Albertson, E., Alexandrov Yu, A., Barberis, D., Berat, C., Beusch, W., Brenzinger, K.H., Brons, S., Brueckner, W., Brunengo, A., Buenerd, M., Charignon, F., Chauvin, J., Chudakov, E A., Dameri, M., Dropmann, F., Engelfried, J., Faller, F., French, B.R., Gerassimov, S.G., Godbersen, M., Grafstroem, P., Hostachy, J.Y., Hurst, R.B., Kallakowsky, Th., Kluth, S., Lauber, H.M., Lennert, P., Ljungfelt, S., Martens, K., Martin, P., Michaels, R., Mueller, U., Newsom, C., Osculati, B., Paul, S., Povh, B., Rey-Campagnolle, M., Rieseberg, H., Roehrich, K., Rosner, G., Rossi, L., Rudolph, H., Scheel, C., Schmitt, L., Siebert, H W., Simon, A., Trombini, A., Touillon, R., Volkemer, B., Walcher, T., Waelder, G., Wenzel, A., Zavertyaev, M.V., Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), WA89, and bibliotheque, LPSC

Subjects
[PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]
Published
1994

21. Measurement of the lifetime

Author

Adamivich, M.I., primary, Albertson, E., additional, Alexandrov, Yu.A., additional, Barberis, D., additional, Beck, M., additional, Bérat, C., additional, Beusch, W., additional, Boss, M., additional, Brons, S., additional, Brückner, W., additional, Buénerd, M., additional, Büscher, C., additional, Charignon, F., additional, Chauvin, J., additional, Chudakov, E., additional, Dropmann, F., additional, Engelfried, J., additional, Faller, F., additional, Fournier, A., additional, Gerassimov, S.G., additional, Godbersen, M., additional, Grafström, P., additional, Haller, Th., additional, Heidrich, M., additional, Hurst, R.B., additional, Königsmann, K., additional, Konorov, I., additional, Martens, K., additional, Martin, Ph., additional, Masciocchi, S., additional, Michaels, R., additional, Müller, U., additional, Paul, S., additional, Povh, B., additional, Ren, Z., additional, Rey-Campagnolle, M., additional, Rosner, G., additional, Rossi, L., additional, Rudolph, H., additional, Schmitt, L., additional, Siebert, H.-W., additional, Simon, A., additional, Smith, V.J., additional, Thilmann, O., additional, Trombini, A., additional, Vesin, E., additional, Volkemer, B., additional, Vorwalter, K., additional, Walcher, Th., additional, Wälder, G., additional, Werding, R., additional, Wittmann, E., additional, Zavertyaev, M.V., additional, and Newaom, C., additional

Published
1995
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