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Titolo:
SEARCH FOR A NEW GAUGE BOSON IN PI(0) DECAYS
Autore:
ALTEGOER J; ASTIER P; AUTIERO D; BALDISSERI A; BALDOCEOLIN M; BALLOCCHI G; BANNER M; BASA S; BASSOMPIERRE G; BENSLAMA K; BESSON N; BIRD I; BLUMENFELD B; BOBISUT F; BOUCHEZ J; BOYD S; BUENO A; BUNYATOV S; CAMILLERI L; CARDINI A; CASTERA A; CATTANEO PW; CAVASINNI V; CERVERAVILLANUEVA A; COLLAZUOL GM; CONFORTO G; CONTA C; CONTALBRIGO M; COUSINS R; DANIELS D; DESANTO A; DELPRETE T; DIGNAN T; DILELLA L; SILVA EDE; DONNELLY IJ; DUMARCHEZ J; FAZIO T; FELDMAN GJ; FERRARI R; FERRERE D; FLAMINIO V; FRATERNALI M; GAILLARD JM; GALUMIAN P; GANGLER E; GEISER A; GEPPERT D; GIBIN D; GNINENKO SN; GOMEZCADENAS JJ; GOSSET J; GOSSLING CC; GOUANERE M; GRANT A; GRAZIANI G; GUGLIELMI A; HAGNER C; HERNANDO J; HUBBARD D; HURST P; HYETT N; IACOPINI E; JOSEPH C; KEKEZ D; KHOMENKO B; KIRSANOV MM; KLIMOV O; KOKKONEN J; KOVZELEV AV; KUZNETSOV V; LACAPRARA S; LANZA A; LAROTONDA L; LAVEDER M; LETESSIERSELVON A; LEVY JM; LINSSEN L; LJUBICIC A; LONG J; LUPI A; MANOLAPOGGIOLI E; MARCHIONNI A; MARTELLI F; MECHAIN X; MENDIBURU JP; MEYER JP; MEZZETTO M; MISHRA SR; MOORHEAD GF; MOSSUZ L; NEDELEC P; NEFEDOV Y; NGUYENMAU C; ORESTANO D; PASTORE F; PEAK LS; PENNACCHIO E; PERROUD JP; PESSARD H; PETTI R; PLACCI A; PLOTHOWBESCH H; PLUQUET A; POLESELLO G; POLLMANN D; POPE BG; POPOV B; POULSEN C; RATHOUIT P; RODA C; RUBBIA A; SALVATORE F; SCANNICCHIO D; SCHAHMANECHE K; SCHMIDT B; SCONZA A; SERRANO M; SEVIOR ME; SILLOU D; SOLER FJP; SOZZI G; STEELE D; STEFFEN P; STEININGER M; STIEGLER U; STIPCEVIC M; STOLARCZYK T; TAREBREYES M; TAYLOR GN; TERESHCHENKO S; TOROPIN AN; TOUCHARD AM; TOVEY SN; TRAN MT; TSESMELIS E; ULRICHS J; UROS V; VALDATANAPPI M; VALUEV V; VANNUCCI F; VARVELL KE; VELTRI M; VERCESI V; VERKINDT D; VIEIRA JM; VINOGRADOVA T; VO MK; VOLKOV SA; WEBER F; WEISSE T; WERLEN M; WILSON F; WINTON LJ; YABSLEY BD; ZACCONE H;
Indirizzi:
UNIV DORTMUND DORTMUND GERMANY UNIV MASSACHUSETTS AMHERST MA 01003 LAPP ANNECY LE VIEUX FRANCE JOHNS HOPKINS UNIV BALTIMORE MD 00000 HARVARD UNIV CAMBRIDGE MA 02138 INFN COSENZA ITALY UNIV CALABRIA I-87036 COSENZA ITALY JINR DUBNA DUBNA RUSSIA UNIV FLORENCE FLORENCE ITALY IST NAZL FIS NUCL I-50125 FLORENCE ITALY CERN GENEVA SWITZERLAND UNIV LAUSANNE LAUSANNE SWITZERLAND UNIV CALIF LOS ANGELES LOS ANGELES CA 00000 UNIV MELBOURNE MELBOURNE VIC AUSTRALIA NUCL RES INST MOSCOW RUSSIA UNIV PADUA PADUA ITALY IST NAZL FIS NUCL PADUA ITALY UNIV PARIS,LPNHE F-75252 PARIS FRANCE UNIV PARIS 07,LPNHE PARIS FRANCE UNIV PARIS 06,LPNHE PARIS FRANCE UNIV PAVIA I-27100 PAVIA ITALY IST NAZL FIS NUCL I-27100 PAVIA ITALY UNIV PISA PISA ITALY IST NAZL FIS NUCL PISA ITALY UNIV ROMA 3 ROME ITALY UNIV SYDNEY SYDNEY NSW 2006 AUSTRALIA ANSTO SYDNEY MENAI NSW AUSTRALIA IST NAZL FIS NUCL I-50125 FLORENCE ITALY UNIV URBINO I-61029 URBINO ITALY RUDJER BOSKOVIC INST ZAGREB CROATIA
Titolo Testata:
Physics letters. Section B
fascicolo: 1-2, volume: 428, anno: 1998,
pagine: 197 - 205
SICI:
0370-2693(1998)428:1-2<197:SFANGB>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
PSEUDOSCALAR MESONS; ETA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
24
Recensione:
Indirizzi per estratti:
Citazione:
J. Altegoer et al., "SEARCH FOR A NEW GAUGE BOSON IN PI(0) DECAYS", Physics letters. Section B, 428(1-2), 1998, pp. 197-205

Abstract

A search was made for a new light gauge boson X which might be produced in pi(0) -->, gamma + X decay from neutral pions generated by 450 GeV protons in the CERN SPS neutrino target. The X's would penetrate the downstream shielding and be observed in the NOMAD detector via the Primakoff effect, in the process of X --> pi(0) conversion in the external Coulomb field of a nucleus. With 1.45 x 10(18) protons on target, 20 candidate events with energy between 8 and 140 GeV were found from the analysis of neutrino data. This number is in agreement with the expectation of 18.1 +/- 2.8 background events from standard neutrino processes. A new 90% C.L. upper limit on the branching ratio Br(pi(0) -->Y + X)< (3.3 to 1.9)X 10(-5) for X masses ranging from 0 to 120 MeV/c(2) is obtained. (C) 1998 Elsevier Science B.V. All rights reserved.

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Documento generato il 24/11/20 alle ore 08:27:29