Bremsstrahlung in Leptonic Onia Decays: Effects on Mass Spectra

Details Bremsstrahlung in Leptonic Onia Decays: Effects on Mass Spectra Bremsstrahlung in Leptonic Onia Decays: Effects on Mass Spectra

2005-10-28

arxiv.org/abs/hep-ex/0510076v1

Physics

High Energy Physics

High Energy Physics - Experiment

18 pages, 14 figures

Scientific paper

In this note we present a study of the radiative tails in the invariant mass spectra of muon or electron pairs from J/psi, psi(2S) and Upsilon(1S) decays which is due to an additional emission of a photon. An analytic formula for dilepton mass spectra in radiative decays is derived and a Monte Carlo simulation for realistic detector conditions is used to study effects on the spectra. A rather simple parameterisation is given, suitable for the treatment of real data.

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