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11 results on '"Zavertyaev, M.V."'

1. 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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2. 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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3. 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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4. 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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5. 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

6. 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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7. 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

8. 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

9. 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

10. 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

11. 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

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