LOW-MASS LEPTON-PAIR PRODUCTION IN P-BE COLLISIONS AT 450 GEV C/

Authors
AKESSON T ALMEHED S ANGELIS ALS ANTOS J ATHERTON H AUBRY P BARTELS HW BEAUDOIN G BEAULIEU JM BEKER H BENARY O BETTONI D BISI V BLEVIS I BOGGILD H CLELAND W CLEMEN M COLLICK B CORRIVEAU F DAGAN S DEDERICHS K DEPOMMIER P DIGIACOMO N DILIBERTO S DODD JR DOLGOSHEIN B DREES A EIDELMAN S ENYO H ERLANDSSON B ESTEN MJ FABJAN CW FISCHER P GAIDOT A GIBRATDEBU F GIUBELLINO P GLASSEL P GOERLACH U GOLUBKOV Y HAGLUND R HAMEL LA VANHECKE H HEDBERG V HEIFETZ R HOLSCHER A JACAK B JARLSKOG G JOHANNSON S KRANER H KROH V LAMARCHE F LEROY C LISSAUER D LONDON G LORSTAD B LOUNIS A MARTELLI F MARZARICHIESA A MASERA M MAZZONI MA MAZZUCATO E MCCUBBIN ML MCCUBBIN NA MCGAUGHEY P MEDDI F MJORNMARK U MUCIACCIA MT MURAVIEV S MURRAY M NEUBERT M NEVSKI P NILSSON S OLSEN L OREN Y PANSART JP PARK YM PFEIFFER A PIUZ F POLYCHRONAKOS V POMIANOWSKI P POULARD G PRICE M RAHM D RAMELLO L RICCATI L ROMANO G ROSA G SANDOR L SCHUKRAFT J SEKIMOTO M SEMAN M SHIKONIAN A SHMELEVA A SIDOROV V SIMONE S SIROIS Y SLETTEN H SMIRNOV S SONDHEIM W SPECHT HJ STERN E STUMER I SUMAROKOV A SUNIER JW TCHERNIATIN V THOMPSON J TIKHOMIROV V VANYASHIN A VASSEUR G VEENHOF RJ WIGMANS R WILLIS WJ YEPES P
Citation
T. Akesson et al., LOW-MASS LEPTON-PAIR PRODUCTION IN P-BE COLLISIONS AT 450 GEV C/, Zeitschrift fur Physik. C, Particles and fields, 68(1), 1995, pp. 47-64
Citations number
84
Categorie Soggetti
Physics, Particles & Fields
Journal title
Zeitschrift fur Physik. C, Particles and fields → ACNP
ISSN journal
01709739
Volume
68
Issue
1
Year of publication
1995
Pages
47 - 64
Database
ISI
SICI code
0170-9739(1995)68:1<47:LLPIPC>2.0.ZU;2-V
Abstract
We report on the production of low-mass electron pairs and muon pairs in p-Be collisions at 450 GeV/c at the CERN SPS. For both electron and muon pairs the low-mass spectrum can be explained satisfactorily by l epton pairs from hadronic decays, and there is no need to invoke any ' 'unconventional'' source. The normalisation of the major hadronic sour ces is set by the data. The upper limit, at 90% confidence level, on a ny new source of lepton pairs is similar to 20% of the hadronic decay contribution for muons, and similar to 40% for electrons.