Article

Zeitschrift für Physik C Particles and Fields

, Volume 68, Issue 1, pp 47-64

Low-mass lepton-pair production in p-Be collisions at 450 GeV/c

  • T. ÅkessonAffiliated withCERN
  • , S. AlmehedAffiliated withUniversity of Lund
  • , A. L. S. AngelisAffiliated withUniversity College London
  • , J. AntosAffiliated withCERN
  • , H. AthertonAffiliated withCERN
  • , P. AubryAffiliated withUniversity of Montreal
  • , H. W. BartelsAffiliated withUniversity of Heidelberg
  • , G. BeaudoinAffiliated withUniversity of Montreal
  • , J. M. BeaulieuAffiliated withUniversity of Montreal
    • , H. BekerAffiliated withCERN
    • , O. BenaryAffiliated withCERNUniversity of Tel Aviv
    • , D. BettoniAffiliated withCERN
    • , V. BisiAffiliated withCERNUniversity of Turin and INFN
    • , I. BlevisAffiliated withCERN
    • , H. BøggildAffiliated withCERN
    • , W. ClelandAffiliated withCERNUniversity of Pittsburgh
    • , M. ClemenAffiliated withCERNUniversity of Pittsburgh
    • , B. CollickAffiliated withCERNUniversity of Pittsburgh
    • , F. CorriveauAffiliated withCERNMcGill University
    • , S. DaganAffiliated withCERNUniversity of Tel Aviv
    • , K. DederichsAffiliated withCERN
    • , P. DepommierAffiliated withUniversity of Montreal
    • , N. DiGiacomoAffiliated withCERNLos Alamos National Laboratory
    • , S. DiLibertoAffiliated withUniversity of Rome ‘La Sapienza’ and INFN
    • , J. R. DoddAffiliated withUniversity College London
    • , B. DolgosheinAffiliated withInstitute of Physics and EngineeringUniversity of Lund
    • , A. DreesAffiliated withUniversity of Heidelberg
    • , S. EidelmanAffiliated withInstitute of Nuclear PhysicsUniversity of Lund
    • , H. En'yoAffiliated withCERN
    • , B. ErlandssonAffiliated withUniversity of StockholmUniversity of Lund
    • , M. J. EstenAffiliated withUniversity College London
    • , C. W. FabjanAffiliated withCERN
    • , P. FischerAffiliated withUniversity of Heidelberg
    • , A. GaidotAffiliated withDAPNIA, CE SaclayUniversity of Lund
    • , F. Gibrat-DebuAffiliated withDAPNIA, CE SaclayUniversity of Lund
    • , P. GiubellinoAffiliated withCERNUniversity of Turin and INFN
    • , P. GlässelAffiliated withUniversity of Heidelberg
    • , U. GoerlachAffiliated withCERN
    • , Y. GolubkovAffiliated withInstitute of Physics and EngineeringUniversity of Lund
    • , R. HaglundAffiliated withUniversity of Lund
    • , L. A. HamelAffiliated withCERNMcGill University
    • , H. van HeckeAffiliated withCERNLos Alamos National Laboratory
    • , V. HedbergAffiliated withCERN
    • , R. HeifetzAffiliated withCERNUniversity of Tel Aviv
    • , A. HolscherAffiliated withUniversity of Heidelberg
    • , B. JacakAffiliated withCERNLos Alamos National Laboratory
    • , G. JarlskogAffiliated withUniversity of Lund
    • , S. JohannsonAffiliated withUniversity of Lund
    • , H. KranerAffiliated withBrookhaven National LaboratoryUniversity of Lund
    • , V. KrohAffiliated withUniversity of Heidelberg
    • , F. LamarcheAffiliated withCERNMcGill University
    • , C. LeroyAffiliated withCERNMcGill University
    • , D. LissauerAffiliated withBrookhaven National LaboratoryUniversity of Lund
    • , G. LondonAffiliated withDAPNIA, CE SaclayUniversity of Lund
    • , B. LorstadAffiliated withUniversity of Lund
    • , A. LounisAffiliated withUniversity of Montreal
    • , F. MartelliAffiliated withCERNUniversity of Turin and INFN
    • , A. Marzari-ChiesaAffiliated withCERNUniversity of Turin and INFN
    • , M. MaseraAffiliated withCERNUniversity of Turin and INFN
    • , M. A. MazzoniAffiliated withCERN
    • , E. MazzucatoAffiliated withCERNMcGill University
    • , M. L. McCubbinAffiliated withUniversity College London
    • , N. A. McCubbinAffiliated withUniversity of LundRutherford Appleton Laboratory
    • , P. McGaugheyAffiliated withCERNLos Alamos National Laboratory
    • , F. MeddiAffiliated withUniversity of Rome ‘La Sapienza’ and INFN
    • , U. MjörnmarkAffiliated withUniversity of Lund
    • , M. T. MuciacciaAffiliated withUniversity of Bari and INFNUniversity of Lund
    • , S. MuravievAffiliated withUniversity of LundLebedev Institute of Physics
    • , M. MurrayAffiliated withCERNUniversity of Pittsburgh
    • , M. NeubertAffiliated withUniversity of Heidelberg
    • , P. NevskiAffiliated withInstitute of Physics and EngineeringUniversity of Lund
    • , S. NilssonAffiliated withUniversity of StockholmUniversity of Lund
    • , L. OlsenAffiliated withBrookhaven National LaboratoryUniversity of Lund
    • , Y. OrenAffiliated withCERNUniversity of Tel Aviv
    • , J. P. PansartAffiliated withDAPNIA, CE SaclayUniversity of Lund
    • , Y. M. ParkAffiliated withCERNUniversity of Pittsburgh
    • , A. PfeifferAffiliated withUniversity of Heidelberg
    • , F. PiuzAffiliated withCERN
    • , V. PolychronakosAffiliated withBrookhaven National LaboratoryUniversity of Lund
    • , P. PomianowskiAffiliated withCERNUniversity of Pittsburgh
    • , G. PoulardAffiliated withCERN
    • , M. PriceAffiliated withCERN
    • , D. RahmAffiliated withBrookhaven National LaboratoryUniversity of Lund
    • , L. RamelloAffiliated withCERNUniversity of Turin and INFN
    • , L. RiccatiAffiliated withCERNUniversity of Turin and INFN
    • , G. RomanoAffiliated withUniversity of LundUniversity of Salerno and INFN
    • , G. RosaAffiliated withUniversity of Rome ‘La Sapienza’ and INFN
    • , L. SandorAffiliated withCERN
    • , J. SchukraftAffiliated withCERN
    • , M. SekimotoAffiliated withCERN
    • , M. SemanAffiliated withCERN
    • , A. ShikonianAffiliated withUniversity of LundLebedev Institute of Physics
    • , A. ShmelevaAffiliated withUniversity of LundLebedev Institute of Physics
    • , V. SidorovAffiliated withInstitute of Nuclear PhysicsUniversity of Lund
    • , S. SimoneAffiliated withUniversity of Bari and INFNUniversity of Lund
    • , Y. SiroisAffiliated withCERNMcGill University
    • , H. SlettenAffiliated withCERN
    • , S. SmirnovAffiliated withInstitute of Physics and EngineeringUniversity of Lund
    • , W. SondheimAffiliated withCERNLos Alamos National Laboratory
    • , H. J. SpechtAffiliated withUniversity of Heidelberg
    • , E. SternAffiliated withCERNUniversity of Pittsburgh
    • , I. StumerAffiliated withBrookhaven National LaboratoryUniversity of Lund
    • , A. SumarokovAffiliated withInstitute of Physics and EngineeringUniversity of Lund
    • , J. W. SunierAffiliated withCERNLos Alamos National Laboratory
    • , V. TcherniatinAffiliated withInstitute of Physics and EngineeringUniversity of Lund
    • , J. ThompsonAffiliated withCERNUniversity of Pittsburgh
    • , V. TikhomirovAffiliated withUniversity of LundLebedev Institute of Physics
    • , A. VanyashinAffiliated withInstitute of Physics and EngineeringUniversity of Lund
    • , G. VasseurAffiliated withDAPNIA, CE SaclayUniversity of Lund
    • , R. J. VeenhofAffiliated withCERN
    • , R. WigmansAffiliated withCERN
    • , W. J. WillisAffiliated withCERN
    • , P. YepesAffiliated withCERNMcGill University

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

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 lepton pairs from hadronic decays, and there is no need to invoke any “unconventional” source. The normalisation of the major hadronic sources is set by the data. The upper limit, at 90% confidence level, on any new source of lepton pairs is ∼20% of the hadronic decay contribution for muons, and ∼40% for electrons.