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Your search keyword '"Polverel, M."' showing total 4 results
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4 results on '"Polverel, M."'

1. EXPERIMENTAL-STUDY OF THE EMERGENCE OF 2-JET DOMINANCE IN PBARP COLLISIONS AT SQUARE-ROOT-S = 630 GEV

Author

Appel, Ja, Bagnaia, P, Banner, M, Battiston, R, Bernlohr, K, Borer, K, Borghini, M, Carboni, G, Cavasinni, Vincenzo, Cenci, P, Chollet, Jc, Clark, Ag, Conta, C, Darriulat, P, Delotto, B, Delprete, T, Dilella, L, Dineshansen, J, Einsweiler, K, Engelmann, R, Fayard, L, Fraternali, M, Froidevaux, D, Gaillard, Jm, Gildemeister, O, Goggi, Vg, Gossling, C, Hahn, B, Hanni, H, Hansen, Jr, Hansen, P, Harnew, N, Himel, T, Iconomidoufayard, L, Jenni, P, Kluge, Ee, Kofoedhansen, O, Lancon, E, Livan, M, Loucatos, S, Madsen, B, Mani, P, Mansoulie, B, Mantovani, Gc, Mapelli, L, Meier, K, Merkel, B, Mollerud, R, Moniez, M, Moning, R, Morganti, M, Onions, C, Parker, Ma, Parrour, G, Pastore, F, Pepe, M, Plothowbesch, H, Polverel, M, Repellin, Jp, Rimoldi, A, Rothenberg, Af, Roussarie, A, Ruhlmann, V, Sauvage, G, Schacher, J, Schlotelburg, M, Stocker, F, Swartz, M, Teiger, J, Tovey, Sn, Tsang, Wy, Valdatanappi, M, Vercesi, V, Weidberg, Ar, Wunsch, M, and Zaccone, H.

Subjects
Nuclear Experiment
Abstract

A heuristic model is used to describe data collected by the UA2 experiment at √s = 630 GeV. Distributions of the energy sharing between the leading clusters and the rest of the event are examined. The main features of these distributions can be described by a two-component model with soft, collective interactions dominating at low transverse energy and hard, constituent interactions dominating at high transverse energy. This model provides a simple picture of the emergence of two-jet dominance at SPS pp Collider energies. © 1985.

Published
1985

2. Direct photon production in {Mathematical expression} in collisions at {Mathematical expression} GeV

Author

Ansari, R, Bagnaia, P, Banner, M, Battiston, R, Bernlöhr, K, Booth, C, Borer, K, Borghini, M, Carboni, G, Cavasinni, V, Cenci, P, Chollet, J-C, Clark, AG, Conta, C, Corona, C, Costantini, F, Darriulat, P, De Lotto, B, Del Prete, T, Di Lella, L, Dines Hansen, J, Einsweiler, K, Fayard, L, Ferrari, R, Fraternali, M, Froidevaux, D, Gaillard, J-M, Gildemeister, O, Goggi, VG, Gössling, C, Hahn, B, Hänni, H, Hansen, JR, Hansen, P, Hara, K, Harnew, N, Hugentobler, H, Iacopini, E, Iconomidou-Fayard, L, Jakobs, K, Jenni, P, Kluge, EE, Kofoed-Hansen, O, Lami, S, Lançon, E, Lariccia, P, Livan, M, Loucatos, S, Madsen, B, Mansoulié, B, Mantovani, GC, Mapelli, L, Meier, K, Merkel, B, Møllerud, R, Moniez, M, Moning, R, Morganti, M, Onions, C, Pal, T, Parker, MA, Parrour, G, Pastore, F, Pepe, M, Petridou, C, Plothow-Besch, H, Polverel, M, Rasmussen, L, Repellin, J-P, Roussarie, A, Ruhlmann, V, Sauvage, G, Schacher, J, Stapnes, S, Stocker, F, Swartz, M, Teiger, J, Tsang, WY, Valdata-Nappi, M, Vercesi, V, Weidberg, AR, Wunsch, M, and Zaccone, H

Subjects
Nuclear Experiment
Abstract

A measurement of the direct production of photons with high transverse momentum from {Mathematical expression} collisions at {Mathematical expression} GeV is presented. The structure of events containing a high transverse momentum photon is studied. The results support predictions from QCD theory. © 1988 Springer-Verlag.

Published
1988

3. MEASUREMENT OF THE SQUARE-ROOTS DEPENDENCE OF JET PRODUCTION AT THE CERN PBARP COLLIDER

Author

Appel, Ja, Bagnaia, Paolo, Banner, M, Battiston, R, Bernlohr, K, Borer, K, Borghini, M, Carboni, G, Cavasinni, V, Cenci, P, Chollet, Jc, Clark, Ag, Codino, A, Conta, C, Darriulat, P, Delotto, B, Delprete, T, Dilella, L, Dineshansen, J, Einsweiler, K, Engelmann, R, Fayard, L, Fraternali, M, Froidevaux, D, Gaillard, Jm, Gildemeister, O, Goggi, Vg, Gossling, C, Hahn, B, Hanni, H, Hansen, Jr, Hansen, P, Harnew, N, Himel, T, Iconomidoufayard, L, Jenni, P, Kluge, Ee, Kofoedhansen, O, Lancon, E, Livan, M, Loucatos, S, Madsen, B, Mani, P, Mansoulie, B, Mantovani, Gc, Mapelli, L, Meier, K, Merkel, B, Mollerud, R, Moniez, M, Moning, R, Morganti, M, Onions, C, Parrour, G, Pastore, F, Pepe, M, Plothowbesch, H, Polverel, M, Putzer, A, Rasmussen, Lo, Repellin, Jp, Rimoldi, A, Rothenberg, Af, Roussarie, A, Ruhlmann, V, Sauvage, G, Schacher, J, Schlotelburg, M, Stocker, F, Swartz, M, Teiger, J, Tittel, K, Tovey, Sn, Tsang, Wy, Valdatanappi, M, Vercesi, V, Weidberg, Ar, Wunsch, M, and Zaccone, H.

Subjects
High Energy Physics::Experiment, Nuclear Experiment
Abstract

The production of very large transverse momentum (pT) hadron jets has been measured in the UA2 experiment at the CERN pp Collider for s=630 GeV. The inclusive jet production cross sections exhibit a pT-dependent increase with respect to the s=546 GeV data from previous Collider runs. This increase can be described both by QCD calculations and by approximate xT=2pT/√s scaling. No significant deviation of the data from QCD predictions is observed at very large pT, placing a lower limit on the characteristic scale Λc of a hypothetical superstrong contact interaction responsible for the binding of preons in the quark (Λc>370 GeV at 95% CL). © 1985.

Published
1985

4. STUDY OF ELECTRON PAIRS BELOW THE Z0 MASS PRODUCED IN PBARP COLLISIONS AT SQUARE-ROOT-S=540 GEV

Author

Bagnaia, Paolo, Banner, M, Battiston, R, Bloch, P, Borer, K, Borghini, M, Burger, J, Cenci, P, Chollet, Jc, Clark, Ag, Conta, C, Darriulat, P, Dilella, L, Dineshansen, J, Engelmann, R, Fayard, L, Fraternali, M, Froidevaux, D, Gaillard, Jm, Gildemeister, O, Goggi, Vg, Gossling, C, Hahn, B, Hanni, H, Hansen, Jr, Hansen, P, Harnew, N, Himel, T, Jenni, P, Kofoedhansen, O, Lancon, E, Livan, M, Loucatos, S, Madsen, B, Mani, P, Mansoulie, B, Mantovani, Gc, Mapelli, L, Merkel, B, Mollerud, R, Onions, C, Parrour, G, Pastore, F, Plothowbesch, H, Polverel, M, Repellin, Jp, Rothenberg, A, Roussarie, A, Sauvage, G, Schacher, J, Siegrist, Jl, Stimpfl, G, Stocker, F, Swartz, M, Teiger, J, Tovey, S, Vercesi, V, Weidberg, Ar, Zaccone, H, Zakrzewski, Ja, and Zeller, W.

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

From an integrated luminosity of ∫Ldt = 116 nb-1, 10events are found which contain an electron pair of mass in the range 12 < Mee < 26 GeV c2 and electron transverse momenta pTe > 5 GeV c. THe sample are described, as well as some featruyres of the The production characteristics of this sample are described, as well as some features of the estimated to be 2.2±0.6 events. The production characteristics of this sample are described, as well as some features of the associated event topology. Comparisons are made with the expectations for such electron pair production from the Drell-Yan mechanism and from the semi-leptonic decay of heavy flavours. © 1985.

Published
1985

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