TY - JOUR

T1 - A study of single and multi-photon production in e+e− collisions at centre-of-mass energies of 130 and 136 GeV

AU - Buskulic, D.

AU - Finch, Alexander

AU - ALEPH Collaboration

PY - 1996

Y1 - 1996

N2 - The production of final states involving one or more energetic photons from e+e− collisions at high energies is studied using data collected by the ALEPH detector at LEP. The data consist of two samples of 2.9 pb−1 each, recorded at centre-of-mass energies of 130 GeV and 136 GeV. The data are in agreement with the predictions of the Standard Model. From an analysis of two-photon final states new limits are placed on the parameters of models involving e+e−γγ contact interactions and excited electrons. The 95% confidence level lower limits on the QED cut-off parameters Λ+ and Λ− are found to be 169 and 132 GeV respectively.

AB - The production of final states involving one or more energetic photons from e+e− collisions at high energies is studied using data collected by the ALEPH detector at LEP. The data consist of two samples of 2.9 pb−1 each, recorded at centre-of-mass energies of 130 GeV and 136 GeV. The data are in agreement with the predictions of the Standard Model. From an analysis of two-photon final states new limits are placed on the parameters of models involving e+e−γγ contact interactions and excited electrons. The 95% confidence level lower limits on the QED cut-off parameters Λ+ and Λ− are found to be 169 and 132 GeV respectively.

U2 - 10.1016/0370-2693(96)00930-6

DO - 10.1016/0370-2693(96)00930-6

M3 - Journal article

VL - 384

SP - 333

EP - 342

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 1-4

ER -