Published March 1990
| Version v1
Journal article
Search for top quark production at the CERN anti pp collider
Creators
- Akesson, T.1
- Ansari, R.1
- Buskulic, D.1
- Chollet, J.C.1
- Fayard, L.1
- Froidevaux, D.1
- Gaillard, J.M.1
- Merkel, B.1
- Moniez, M.1
- Parrour, G.1
- Petroff, P.1
- Repellin, J.P.1
- Unal, G.1
- Alitti, J.2
- Bareyre, P.2
- Bonamy, P.2
- Magneville, C.2
- Meyer, J.P.2
- Stirling, A.V.2
- Zaccone, H.2
- Ansorge, R.E.3
- Wolf, R.S. de3
- Munday, D.J.3
- Pentney, J.M.3
- Rushbrooke, J.G.3
- Singh, S.L.3
- Wells, P.S.3
- White, T.O.3
- Wotton, S.A.3
- Bagnaia, P.4
- Blaylock, G.4
- Di Lella, L.4
- Egan, G.F.4
- Einsweiler, K.E.4
- Gildemeister, O.4
- Goessling, C.4
- Hansen, J.R.4
- Hellman, S.4
- Hultqvist, K.4
- Incandela, J.4
- Jakobs, K.4
- Jenni, P.4
- Linssen, L.4
- Lubrano, P.4
- Mapelli, L.4
- Meier, K.4
- Onions, C.4
- Parker, M.A.4
- Poppleton, A.4
- Rasmussen, L.4
- Stapnes, S.4
- Tovey, S.N.4
- Weidberg, A.R.4
- Wood, D.R.4
- Bonesini, M.4, 5, 6
- Polesello, G.4, 5, 6
- Borer, K.7
- Federspiel, A.7
- Hara, K.7
- Hugentobler, E.7
- Moning, R.7
- Mueller, L.7
- Schacher, J.7
- Carboni, G.8, 9
- Cavasinni, V.8, 9
- Del Prete, T.8, 9
- Iacopini, E.8, 9
- Lami, S.8, 9
- Morganti, M.8, 9
- Petridou, C.8, 9
- Primavera, M.8, 9
- Valdata-Nappi, M.8, 9
- Cavalli, D.5, 6
- Costa, G.5, 6
- Gianotti, F.5, 6
- Mandelli, L.5, 6
- Mazzanti, M.5, 6
- Perini, L.5, 6
- Cenci, P.10, 11
- Lariccia, P.10, 11
- Pepe, M.10, 11
- Scampoli, P.10, 11
- Conta, C.12, 13
- Dell'Acqua, A.12, 13
- De Lotto, B.12, 13
- Ferrari, R.12, 13
- Fraternali, M.12, 13
- Pastore, F.12, 13
- Pennacchio, E.12, 13
- Rimoldi, A.12, 13
- Costantini, F.4, 8, 9
- Fumagalli, G.12, 13, 4
- Goggi, V.G.12, 13, 4
- Vercesi, V.12, 13, 4
- Gruenendahl, S.14
- Kluge, E.E.14
- Kurz, N.14
- Plothow-Besch, H.14
- Lefebvre, M.4, 3
- UA2 Collaboration
- 1. Paris-11 Univ., 91 - Orsay (France). Lab. de l'Accelerateur Lineaire
- 2. CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)
- 3. Cambridge Univ. (UK). Cavendish Lab.
- 4. European Organization for Nuclear Research, Geneva (Switzerland)
- 5. Istituto Nazionale di Fisica Nucleare, Milan (Italy)
- 6. Milan Univ. (Italy). Dipt. di Fisica
- 7. Bern Univ. (Switzerland). Lab. fuer Hochenergiephysik
- 8. Istituto Nazionale di Fisica Nucleare, Pisa (Italy)
- 9. Pisa Univ. (Italy)
- 10. Istituto Nazionale di Fisica Nucleare, Perugia (Italy)
- 11. Perugia Univ. (Italy). Dipartimento di Fisica
- 12. Istituto Nazionale di Fisica Nucleare, Pavia (Italy)
- 13. Pavia Univ. (Italy)
- 14. Heidelberg Univ. (Germany, F.R.). Inst. fuer Hochenergiephysik
Description
The upgraded UA2 detector has collected data corresponding to a total integrated luminosity of 7.5 pb-1 from anti pp collisions at a centre of mass energy of 630 GeV during 1988 and 1989. A search has been performed for the production and decay of the top quark (t) or a member of a hypothetical fourth family (b'). No evidence has been found for such processes. Using the expected rates for production and decay branching ratios from the Standard Model, this implies that the top quark mass is greater than 69(71) GeV/c2, and that the b' mass is greater than 54(57) GeV/c2, at 95(90)% confidence. (orig.)
Additional details
Publishing Information
- Journal Title
- Zeitschrift fuer Physik, C
- Journal Volume
- 46
- Journal Issue
- 2
- Series
- Z. Phys., C.
- Journal Page Range
- 179-189
- ISSN
- 0170-9739
- CODEN
- ZPCFD
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 21038648
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- EFFECTIVE MASS; ELECTRONS; EXPERIMENTAL DATA; GEV RANGE 100-1000; HADRONS; INCLUSIVE INTERACTIONS; INTEGRAL CROSS SECTIONS; JET MODEL; LIMITING VALUES; MASS SPECTRA; MULTIPLE PRODUCTION; PROTON-ANTIPROTON INTERACTIONS; QUARKS; REST MASS; SEMILEPTONIC DECAY; TOP PARTICLES; TRANSVERSE MOMENTUM
- Descriptors DEC
- BARYON-BARYON INTERACTIONS; CROSS SECTIONS; DATA; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; GEV RANGE; HADRON-HADRON INTERACTIONS; INFORMATION; INTERACTIONS; LEPTONS; LINEAR MOMENTUM; MASS; MATHEMATICAL MODELS; NUCLEON-ANTINUCLEON INTERACTIO; NUMERICAL DATA; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE MODELS; PARTICLE PRODUCTION; POSTULATED PARTICLES; SPECTRA; WEAK PARTICLE DECAY
Optional Information
- Collaborations
- UA2 Collaboration.