Jet and hadron production in photon-photon collisions
نویسندگان
چکیده
منابع مشابه
Jet and hadron production in photon - photon collisions ∗
∗Heisenberg-Fellow hadronic fluctuations (“resolved”). Direct and resolved interactions can be separated by measuring the fraction xγ of the photon’s momentum participating in the hard interaction for the two photons. In γγ interactions they are labelled xγ for the two photons. Ideally, the direct γγ events with two bare photons are expected to have xγ = 1 and x − γ = 1, whereas for double-reso...
متن کاملJet and Di-Jet production in Photon-Photon collisions
During the past two years different analyses [1,2,3,4] of jet and di-jet production from real photons scattering at LEP have been presented. A unique computation it is available in the literature [5,6] at NLO for this process. This computation is based on the slicing method to cancel analytically virtual and infrared divergences. This technique relies on an approximate treatment of the phase sp...
متن کاملHigh Momentum Particle and Jet Production in Photon-photon Collisions *
Jet and particle production have been studied in collisions of quasi-real photons collected during the LEP2 program. OPAL and DELPHI report good agreement of NLO perturbative QCD with the measured differential di-jet cross sections, which reach a mean transverse energy of the di-jet system of 25GeV. L3, on the other hand, finds drastic disagreement of the same calculation with single jet produc...
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A dual picture between perturbative QCD and resonance production is exploited to describe non-diffractive meson pair production near threshold in 77 annihilation. Submitted to Physical Review Letters * Work supported in part by the Department of Energy, contract DE-AC03-76SF00515. In quantum chromodynamics, hadron production in 77 annihilation is initiated by the coupling of the incident photon...
متن کاملObservation of Exclusive Di-Photon Production in Hadron-Hadron Collisions
We present the first observation and cross section measurement of exclusive photon pair production in proton-antiproton collisions at √ s = 1.96 TeV taken by the Run II Collider Detector at Fer-milab. We select events with two electromagnetic showers, each with transverse energy E T > 2.5 GeV and pseudorapidity |η| < 1.0, with no other particles detected in −7.4 < η < +7.4. The two showers have...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 1999
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(99)00763-x