Search for Direct Gamma Production at Low Transverse Momentum in 63-GeV pp Collisions

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Abstract

We have searched for direct photons of low PT (≤1.0 GeV/c) at θc.m.=90° in pp collisions at √s =63 GeV. We used two independent methods: direct detection in NaI crystals and conversion to e+e− pairs. No signal is observed; the photon spectrum is well described by the decay of hadrons. The result is consistent with a direct low-PT photon signal reported at √s =12 GeV, but excludes a rapid growth of soft-photon production with √s .

Detaljer

Författare
Enheter & grupper
Externa organisationer
  • CERN
  • Lund University
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Subatomär fysik
Originalspråkengelska
Sidor (från-till)2615-2623
TidskriftPhysical Review D
Volym36
Utgåva nummer9
StatusPublished - 1987
PublikationskategoriForskning
Peer review utfördJa