15 results on '"B. Pszola"'
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2. Prompt neutrino results from a proton beam dump experiment
- Author
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V. Hepp, Konrad Kleinknecht, W. von Rüden, H. Taureg, Jan Krolikowski, B. Falkenburg, T. Flottmann, P. Perez, Jean-Pierre Merlo, R. W. Williams, R. Turlay, B. Renk, F. Ranjard, Joseph Rothberg, D. Pollmann, H. D. Wahl, P. Berge, John Rander, R. Hagelberg, B. Peyaud, H. Blümer, J. Steinberger, J. De Groot, Claude Guyot, P. Buchholz, R. Belusević, K. Tittel, F. Dydak, P. Debu, F. Eisele, J. P. Schuller, J. Knobloch, C. Geweniger, A. Para, H. Keilwerth, B. Pszola, J. Duda, Jorg Wotschack, and H. Abramowicz
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Physics ,Particle physics ,Physics and Astronomy (miscellaneous) ,Proton ,Physics::Instrumentation and Detectors ,Branching fraction ,Astrophysics::High Energy Astrophysical Phenomena ,High Energy Physics::Phenomenology ,Hadron ,Electron ,law.invention ,Nuclear physics ,law ,Antimatter ,Physics::Accelerator Physics ,High Energy Physics::Experiment ,Beam dump ,Neutrino ,Engineering (miscellaneous) ,Lepton - Abstract
A study of prompt neutrino events from 400 GeV protons on a beam-dump is presented. The ratio of electron- to muon-neutrino rates is 0.86±0.14, in agreement withe−μ universality. The anti-neutrino to neutrino flux ratio is $$\bar v_\mu /v_\mu = 0.81 \pm 0.19$$ . The absolute rates and distributions observed are shown to be in quantitative agreement with the known properties of charmedquark production in hadron collisions.
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- 1992
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3. A measurement of differential cross-sections and nucleon structure functions in charged-current neutrino interactions on iron
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H. Taureg, F. Eisele, J. P. Schuller, Jan Krolikowski, Helmut Burkhardt, Holt Meyer, H. Blümer, H. D. Brummel, R. Turlay, R. W. Williams, B. Renk, R. Geiges, F. Ranjard, E. Müller, H. D. Wahl, T. Alvarez, K. Tittel, Konrad Kleinknecht, B. Kampschulte, P. Buchholz, P. Perez, Claude Guyot, R. Belusević, P. Berge, V. Hepp, F. Perrier, A. Para, B. Vallage, B. Pszola, F. Dydak, A. Lipniacka, J. Wotschack, B. Peyaud, Joseph Rothberg, J. Duda, R. Hagelberg, C. Geweniger, J. Knobloch, P. Debu, P. Palazzi, H. Keilwerth, J. Steinberger, Jean-Pierre Merlo, Halina Abramowicz, B. Falkenburg, and Mieczyslaw Witold Krasny
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Quantum chromodynamics ,Physics ,Particle physics ,Muon ,Physics and Astronomy (miscellaneous) ,Physics::Instrumentation and Detectors ,Astrophysics::High Energy Astrophysical Phenomena ,High Energy Physics::Phenomenology ,Inelastic scattering ,Deep inelastic scattering ,Nuclear physics ,High Energy Physics::Experiment ,Neutrino ,Nuclear Experiment ,Nucleon ,Engineering (miscellaneous) ,Particle Physics - Experiment ,Charged current ,Lepton - Abstract
A high-statistics measurement of the differential cross-sections for neutrino-iron scattering in the wide-band neutrino beam at the CERN SPS is presented. Nucleon structure functions are extracted and theirQ 2 evolution is compared with the predictions of quantum chromodynamics.
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- 1991
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4. Total neutrino and antineutrino charged current cross section measurements in 100, 160, and 200 GeV narrow band beams
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M. Fiedler, John Rander, Joseph Rothberg, P. Palazzi, A. Grant, F. Eisele, N. Kurz, R. Belusević, J. P. Schuller, H. D. Brummel, A. Para, R. Geiges, H. Blümer, R. Turlay, B. Renk, H. D. Wahl, R. Hagelberg, Pablo Rodriguez Perez, J. Duda, P. Berge, B. Vallage, F. Ranjard, P. Debu, H. J. Meyer, H. Wachsmuth, P. Buchholz, F. Dydak, H. Taureg, A. Blondel, E. Müller, J. De Groot, Helmut Burkhardt, B. Pszola, B. Kampschulte, P. Böckmann, V. Hepp, H. Abramowicz, C. Geweniger, Jan Krolikowski, R. W. Williams, C. Guyot, Konrad Kleinknecht, B. Falkenburg, H. Keilwerth, Anna Lipniacka, J. P. Merlo, J. Knobloch, Boleslaw Wyslouch, Mieczyslaw Witold Krasny, Elliot Hughes, K. Tittel, J. Steinberger, J. Wotschack, and F. Perrier
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Physics ,Nuclear reaction ,Particle physics ,Antiparticle ,Muon ,Physics and Astronomy (miscellaneous) ,Physics::Instrumentation and Detectors ,Astrophysics::High Energy Astrophysical Phenomena ,Nuclear Theory ,Nuclear physics ,Antimatter ,High Energy Physics::Experiment ,Neutrino ,Nuclear Experiment ,Nucleon ,Engineering (miscellaneous) ,Particle Physics - Experiment ,Charged current ,Lepton - Abstract
Neutrino and antineutrino total charged current cross sections on iron were measured in the 100, 160, and 200 GeV narrow band beams at the CERN SPS in the energy range 10 to 200 GeV. Assuming σ/E to be constant, the values corrected for non-isoscalarity are σv/E = (0.686 ± 0.019) * 10−38 cm2/ (GeV · nucleon) and σv/E = (0.339 ± 0.010) * 10−38 cm2/ (GeV·nucleon). Between 50 and 150 GeV no energy dependence of σ/E was observed within ±3% for neutrino and ±4% for antineutrino interactions.
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- 1987
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5. Experimental study of opposite-sign dimuons produced in neutrino and antineutrino interactions
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Jorg Wotschack, F. Dydak, Joseph Rothberg, W D Schlatter, Jp Schuller, T. Ruan, John Rander, C. Geweniger, F. Ranjard, J. Królikowski, F. Eisele, Claude Guyot, Halina Abramowicz, H. Lierl, J. Knobloch, P. Perez, H. P. Klasen, K. Kleinknecht, H. J. Willutzki, K. Tittel, H. Taureg, B. Renk, A. Para, T. Flottmann, W. Wu, J. Steinberger, P. Palazzi, B. Pszola, J. May, J. He, J. De Groot, Jean-Pierre Merlo, R. Turlay, H. D. Wahl, B. Peyaud, and W. von Rüden
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Physics ,Particle physics ,Muon ,Physics and Astronomy (miscellaneous) ,High Energy Physics::Phenomenology ,Large sample ,Nuclear physics ,Yield (chemistry) ,High Energy Physics::Experiment ,Charm (quantum number) ,Weak current ,Neutrino ,Nuclear Experiment ,Engineering (miscellaneous) ,Particle Physics - Experiment ,Mixing (physics) ,Sign (mathematics) - Abstract
A large sample of opposite-sign dimuons, produced by the interaction of neutrinos and antineutrinos in iron, is analysed. The data agree very well with the hypothesis that the extra muon is the product of charm decay. They yield information on the strength and space-time structure of the charmproducing weak current. The strange-sea structure functionxs(x) is determined. The difference between neutrino and antineutrino dimuon production is analysed to provide a value of the Kobayashi-Maskawa weak mixing angleθ2.
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- 1982
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6. Measurement of neutrino and antineutrino structure functions in hydrogen and iron
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A. Para, T. Flottmann, V. Hepp, B. Pszola, Claude Guyot, F. Eisele, C. Geweniger, A. Savoy-Navarro, H. Taureg, H. Lierl, R. Turlay, P. Palazzi, H. D. Wahl, Jp Schuller, B. Peyaud, B. Renk, F. Ranjard, J. May, F. Dydak, P. Perez, J. Królikowski, P. Debu, J. Knobloch, K. Tittel, H. Blümer, Jorg Wotschack, J. Steinberger, J. De Groot, P. Buchholz, Konrad Kleinknecht, John Rander, G. Hansl-Kozanecki, J. Duda, Halina Abramowicz, S. Whitaker, D. Schlatter, W. von Rüden, and Jean-Pierre Merlo
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Quark ,Physics ,Particle physics ,Muon ,Physics and Astronomy (miscellaneous) ,Hydrogen ,chemistry.chemical_element ,Parton ,Nuclear physics ,Neutrino detector ,chemistry ,High Energy Physics::Experiment ,Neutrino ,Engineering (miscellaneous) ,Particle Physics - Experiment ,Liquid hydrogen ,Lepton - Abstract
The CDHS neutrino detector has been used to measure events originating in a tank of liquid hydrogen and in the iron of the detector. Total cross-sections, differential cross-sections, and structure functions are given for hydrogen and compared with those in iron. The measurements are in agreement with the expectations of the quark parton model. No significant differences indicative of nuclear binding effects in corresponding structure functions of protons and iron are observed. This may be of special interest in the case of the sea structure functions, since large differences are expected in some models.
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- 1984
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7. Evidence forΨ production by neutrinos via neutral currents
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T. Ruan, A. Para, C. Geweniger, J. P. Schuller, F. Dydak, Claude Guyot, T. Flottmann, S. Loucatos, W. Wu, P. Palazzi, B. Renk, Halina Abramowicz, H. J. Willutzki, J. Steinberger, J. May, J. He, J. Ḱlikowski, J. De Groot, K. Tittel, Konrad Kleinknecht, H. P. Klasen, F. Ranjard, R. Turlay, H. D. Wahl, D. Schlatter, B. Peyaud, J. Wotschack, F. Eisele, W. von Rüden, H. Taureg, John Rander, B. Pszola, Jean-Pierre Merlo, Joseph Rothberg, J. Knobloch, and H. Lierl
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Nuclear physics ,Physics ,Nuclear and High Energy Physics ,Particle physics ,Cross section (physics) ,Neutral current ,Neutrino ,Nucleon - Abstract
Experimental evidence for the diffractive production ofΨmesons in weak neutral current reactions is reported. The spectrum-averaged cross section for this process isσdiff = (4.2±1.5) × 10−41cm2/nucleon, in agreement with gluonfusion models, but at variance with vector dominance calculations.
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- 1982
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8. A search for νμ oscillations in the Δm2 range 0.3–90 eV2
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J. P. Schuller, B. Pszola, P. Perez, J. Steinberger, J. Wotschack, F. Eisele, A. Para, H. Taureg, H. Abramowicz, John Rander, H. Wachsmuth, P. Debu, T. Flottmann, Joseph Rothberg, Holt Meyer, R. Turlay, H. Blümer, J. Duda, H. D. Wahl, Jean-Pierre Merlo, H. Keilwerth, J. De Groot, K. Tittel, Konrad Kleinknecht, Jan Krolikowski, G.J. Feldman, W. von Rüden, B. Falkenburg, C. Geweniger, Peter Buchholz, B. Renk, J. Knobloch, F. Dydak, B. Peyaud, Claude Guyot, and R. Belusević
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Massless particle ,Nuclear reaction ,Nuclear physics ,Physics ,Nuclear and High Energy Physics ,Particle physics ,Muon ,Proton ,Elementary particle ,Neutrino ,Neutrino oscillation ,Lepton - Abstract
We have searched for ν μ oscillations by comparing the rates of ν gm charged-current interactions in two detectors located 130 and 885 m from the target, which was struck by a 9.2 GeV/ c proton beam from the CERN Proton Synchroton. No evidence for ν μ oscillations was found. At the 90% confidence level, Δm 2 values between 0.26 and 90 eV 2 are excluded for maximal mixing. The most restrictive limit on the neutrino mixing-angle parameter sin 2 2 θ is 0.053 at Δm 2 =2.5 eV 2 .
- Published
- 1984
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9. Tests of QCD and non-asymptotically-free theories of the strong interaction by an analysis of the nucleon structure functionsx F 3,F 2, and $$\bar q$$
- Author
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J. Knobloch, John Rander, J. De Groot, J. Królikowski, H. Taureg, H. P. Klasen, F. Dydak, J. Rothberg, W. Wu, J. Steinberger, Halina Abramowicz, Konrad Kleinknecht, J. May, J. He, F. Eisele, B. Pszola, H. J. Willutzki, J. P. Schuller, T. Flottmann, R. Turlay, D. Schlatter, P. Palazzi, H. D. Wahl, W. von Rüden, B. Peyaud, Claude Guyot, Jean-Pierre Merlo, T. Ruan, C. Geweniger, J. Duda, A. Para, K. Tittel, B. Renk, F. Ranjard, and J. Wotschack
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Quantum chromodynamics ,Physics ,Particle physics ,Physics and Astronomy (miscellaneous) ,Neutral current ,High Energy Physics::Lattice ,High Energy Physics::Phenomenology ,Scalar (mathematics) ,Strong interaction ,Hadron ,Gluon ,High Energy Physics::Experiment ,Nucleon ,Engineering (miscellaneous) ,Scaling - Abstract
The scaling violations of the structure functionsF 2,xF 3, and $$\bar q$$ , as measured in deep-inelastic neutrino-nucleon scattering at high hadron massW, have been compared with the predictions of QCD and other candidate field theories of strong interactions. Non-asymptotically free theories with scalar and vector gluons are incompatible with the data. This leaves QCD as the only field theory that gives a consistent description of all the observed scaling violations. The data do not, however, permit a sensitive test of the existence of the gluon self-coupling.
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- 1982
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10. Are there 'prompt' like-sign dimuons?
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J. Krolikowski, T. Ruan, R. Hagelberg, R. Geiges, F. Dydak, C. Geweniger, H. D. Wahl, T. Flottmann, J. May, H. D. Brummel, R. Turlay, H. Abramowicz, K. Tittel, Konrad Kleinknecht, John Rander, H. Burkhardt, D. Schlatter, P. Palazzi, W. M. Wu, H. Taureg, P. Debu, H. Blümer, Mieczyslaw Witold Krasny, V. Hepp, P. Perez, J. Knobloch, B. Kampschulte, J. G. H. DeGroot, B. Pszola, R. Belusević, P. Buchholz, E. Müller, F. Eisele, B. Vallage, C. Guyot, A. Para, H. J. Meyer, J. P. Merlo, B. Renk, B. Falkenburg, F. Ranjard, B. Peyaud, Jp Schuller, J. Duda, Joseph Rothberg, K. Schmitz, F. Perrier, Jorg Wotschack, S. Loucatos, J. Steinberger, J. H. He, and H. Keilwerth
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Physics ,Particle physics ,Muon ,Physics and Astronomy (miscellaneous) ,Branching fraction ,Perturbative QCD ,Nuclear physics ,Pair production ,Antimatter ,High Energy Physics::Experiment ,Neutrino ,Nuclear Experiment ,Engineering (miscellaneous) ,Particle Physics - Experiment ,Charged current ,Lepton - Abstract
From exposures of the CDHS detector at the CERN SPS we have obtained 367μ + μ − events in neutrino beams and 73μ + μ + events in an antineutrino beam. The magnitude of a prompt like-sign signal has been controversial in the past and moreover could not be explained by known production mechanisms. A critical discussion of the experimental situation is given. We have tried to reduce the systematic uncertainties of previous experiments and to get more information on the dependence of the signal with energy and the muon momentum cut-off. This experiment yields a signal of 2.8σ (2.4σ) of prompt like-sign dimuon events in the case of neutrinos (antineutrinos). The rate to charged current events is of the order of 10−4 forp μ 100 GeV. The prompt signal has all the properties expected from the production and decay of charm-anticharm events. The magnitude, however, is substantially higher then the prediction of perturbative QCD but lower than some other experiments.
- Published
- 1986
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11. The response and resolution of an iron-scintillator calorimeter for hadronic and electromagnetic showers between 10 GeV and 140 GeV
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T. Flottmann, Konrad Kleinknecht, H. P. Klasen, A. Para, H. Taureg, Jean-Pierre Merlo, J. Knobloch, F. Eisele, J. De Groot, W. Wu, R. Turlay, J. P. Schuller, John Rander, P. Palazzi, H. D. Wahl, J. Steinberger, J. Wotschack, B. Peyaud, B. Renk, J. Królikowski, F. Ranjard, B. Pszola, K. Tittel, W. von Rüden, J. May, J. He, W D Schlatter, Halina Abramowicz, H. J. Willutzki, Claude Guyot, T. Ruan, F. Dydak, C. Geweniger, and Joseph Rothberg
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Physics ,Particle physics ,Meson ,Physics::Instrumentation and Detectors ,Astrophysics::High Energy Astrophysical Phenomena ,Hadron ,General Medicine ,Scintillator ,Particle detector ,Calorimeter ,Nuclear physics ,Pion ,Scintillation counter ,High Energy Physics::Experiment ,Detectors and Experimental Techniques ,Nuclear Experiment ,Absorption (electromagnetic radiation) - Abstract
The energy resolution and response of a segmented iron-scintillator total absorption calorimeter has been measured for pion energies from 10 to 140 GeV and for electron energies up to 50 GeV. A procedure has been found to weight individual counter responses for hadron showers which results in improved energy resolution at high energies and a nearly linear dependence of response on hadron energy above 30 GeV. There is evidence in the data that this weighting procedure compensates for fluctuations in energy deposition due to the electromagnetic component of the hadronic shower. For an iron sampling thickness of 2.5 cm the hadron energy resolution follows a 0.58 E law, while the resolution for electromagnetic showers is 0.23 E .
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- 1981
- Full Text
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12. Neutrino and antineutrino charged-current inclusive scattering in iron in the energy range 20<E v <300 GeV
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R. Turlay, John Rander, F. Eisele, Konrad Kleinknecht, P. Bloch, K. Tittel, Halina Abramowicz, J. De Groot, H. D. Wahl, A. Para, B. Peyaud, J. May, J. He, F. Dydak, P. Buchholz, D. Pollmann, H. Taureg, B. Devaux, W. Wu, Jean-Pierre Merlo, J. Steinberger, Joseph Rothberg, H. P. Klasen, J. Królikowski, J. Knobloch, T. Flottmann, D. Schlatter, A. Savoy-Navarro, H. Lierl, H. J. Willutzki, W. von Rüden, P. Palazzi, B. Pszola, B. Renk, F. Ranjard, T. Ruan, C. Geweniger, Claude Guyot, and J. Wotschack
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Quantum chromodynamics ,Physics ,Range (particle radiation) ,Particle physics ,Physics and Astronomy (miscellaneous) ,Nuclear Theory ,High Energy Physics::Phenomenology ,Elementary particle ,Super Proton Synchrotron ,Gluon ,Nuclear physics ,High Energy Physics::Experiment ,Neutrino ,Nuclear Experiment ,Nucleon ,Engineering (miscellaneous) ,Particle Physics - Experiment ,Charged current - Abstract
Inclusive charged-current interactions of high-energy neutrinos and antineutrinos have been studied with high statistics in a counter experiment at the CERN Super Proton Synchrotron. The energy dependence of the total cross-sections, the longitudinal structure function, and the nucleon structure functionsF2,xF3, and\(\bar q^{\bar v} \) are determined from these data. The analysis of theQ2-dependence of the structure functions is used to test quantum chromodynamics, to determine the scale parameter Λ and the gluon distribution in the nucleon.
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- 1983
- Full Text
- View/download PDF
13. Measurement of the neutral to charged current cross section ratios in neutrino and antineutrino nucleon interactions and determination of the Weinberg angle
- Author
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J. Królikowski, John Rander, K. Tittel, F. Dydak, Joseph Rothberg, Konrad Kleinknecht, E. L. Navarria, J. Knobloch, B. Peyaud, J. Maillard, A. Para, J. Duda, B. Pszola, S. Loucatos, T. Flottmann, J. Wotschack, H. Lierl, B. Renk, F. Ranjard, Jean-Pierre Merlo, Halina Abramowicz, H. Taureg, V. Hepp, J. May, J. He, W. Wu, B. Bloch-Devaux, J. Steinberger, T. Hansl-Kozanecka, H. P. Klasen, P. Bloch, D. Schlatter, W. von Rüden, P. Palazzi, J. De Groot, R. Turlay, H. D. Wahl, D. Pollmann, F. Eisele, A. Savoy-Navarro, H. J. Willutzki, T. Ruan, C. Geweniger, and Claude Guyot
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Physics ,Particle physics ,Physics and Astronomy (miscellaneous) ,Neutral current ,High Energy Physics::Phenomenology ,Electroweak interaction ,Weinberg angle ,Elementary particle ,Standard Model ,Nuclear physics ,High Energy Physics::Experiment ,Neutrino ,Nuclear Experiment ,Nucleon ,Engineering (miscellaneous) ,Charged current - Abstract
The cross section ratios of neutral and charged current interactions induced by neutrinos and antineutrinos in iron have been measured in the 200 GeV narrow-band beam at the CERN SPS. We findRv=0.301±0.007 andRv=0.363±0.015 for a hadron energy cut of 10 GeV. The results are in agreement with the standard model of electroweak interactions. In the\(\overline {MS} \) renormalization scheme at the scale of theW boson mass\(\sin ^2 \hat \theta _W \left( {m_W } \right) = 0.226 \pm 0.012\) is obtained, where the error represents the experimental uncertainty. The theoretical uncertainty is estimated to beΔsin2θW=±0.006.
- Published
- 1985
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14. A measurement of the ratio of longitudinal and transverse structure functions in neutrino interactions between 30 and 200 GeV
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W. Wu, J. Steinberger, A. Para, T. Flottmann, A. Savoy-Navarro, H. J. Willutzki, J. Wotschack, John Rander, S. Loucatos, K. Tittel, H. Lierl, B. Pszola, Halina Abramowicz, F. Dydak, Joseph Rothberg, P. Bloch, B. Renk, Konrad Kleinknecht, F. Ranjard, J. Knobloch, J. Królikowski, H. P. Klasen, P. Palazzi, J. May, J. He, H. Taureg, Jean-Pierre Merlo, R. Turlay, F. Eisele, H. D. Wahl, B. Peyaud, D. Schlatter, W. von Rüden, J. De Groot, T. Ruan, C. Geweniger, and Claude Guyot
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Physics ,Quantum chromodynamics ,Nuclear and High Energy Physics ,Particle physics ,Astrophysics::High Energy Astrophysical Phenomena ,Structure function ,Function (mathematics) ,Nuclear physics ,Transverse plane ,High Energy Physics::Experiment ,Neutrino ,Scale parameter ,Charged current ,Particle Physics - Experiment - Abstract
A new measurement of the ratio R = σ L / σ T of longitudinal and transverse structure functions in neutrino interactions on iron between 30 and 190 GeV neutrino energy is reported. The result is given as a function of the scale parameter x and the inelasticity ν of the interaction. The average value is R = 0.10 ± 0.07 around ν ≈ 50 GeV and is in accordance with a prediction from the QCD theory.
- Published
- 1981
15. Limit on right handed weak coupling parameters from inelastic neutrino interactions
- Author
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J. Steinberger, H. Taureg, John Rander, W Vonruden, Jt He, Jp Schuller, Hp Klasen, T. Flottmann, P. Buchholz, F. Dydak, R. Turlay, B. Pszola, Wm Wu, Jean-Pierre Merlo, J. Knobloch, F. Eisele, H. D. Wahl, B. Peyaud, J. Królikowski, Hj Willutzki, Konrad Kleinknecht, P. Palazzi, Jorg Wotschack, C. Geweniger, Joseph Rothberg, Claude Guyot, J. May, A. Para, Wd Schlatter, B. Renk, F. Ranjard, Halina Abramowicz, Jgh Degroot, K. Tittel, and Tz Ruan
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Quark ,Physics ,Particle physics ,Muon ,Physics and Astronomy (miscellaneous) ,Scattering ,High Energy Physics::Phenomenology ,Sigma ,Coupling (probability) ,High Energy Physics::Experiment ,Neutrino ,Engineering (miscellaneous) ,Mixing (physics) ,Particle Physics - Experiment ,Lepton - Abstract
Right handed weak quark currents coupled to the usual left handed weak lepton current would be seen in inclusive antineutrino scattering on nuclei as a contribution at largey with the quark (not antiquark) structure function. We do not see such a term, and can therefore put an upper limit on the relative strengths of such right handed currents:\(\varrho ^2 = \frac{{\sigma _R }}{{\sigma _L }}< 0.009\), 90% confidence. This measurement puts limits on the mixing angle of left-right symmetric models. In distinction to similar limits derived from muon decay or β decay, our limits are also valid if the right handed neutrino is heavy.
- Published
- 1981
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