We have studied the process e+e- → nγ (n ≥ 2) at an average center-of-mass energy of 133 GeV using the L3 detector at LEP. For an integrated luminosity of 4.95 pb−1 we find one γγγγ(γ) final state with only hard photons. The rates of both γγγ and γγ events are consistent with QED expectations. The cross section of the reaction e+e- → γγ(γ) in the polar range 16° < θγ < 164° is measured to be 22.6 ± 2.2 pb. Decays into photons of narrow scalar resonances with masses between 90 and 130 GeV are not observed. The observation of the event with four energetic photons is consistent with QED although the kinematic configuration of the photons is a typical
Single- and multi-photon events with missing energy are selected in 619 pb−1 of data collected by th...
AbstractSingle- and multi-photon events with missing energy are selected in 619 pb−1 of data collect...
The production of final states involving one or more energetic photons from e(+)e(-) collisions at h...
We have studied the process e + e − → nγ ( n ≥ 2) at an average center-of-mass energy of 133 GeV usi...
We have studied the process e+e- → ny (n ≥ 2) at an average center-of-mass energy of 133 GeV using t...
We have studied the process e+e-→nγ (n ≥ 2) at centre-of-mass energies of 161.3 GeV and 172.1 GeV. T...
We have studied the process e + e − → n γ (n ≥ 2) at centre-of-mass energies of 161.3 GeV and 172.1 ...
We have studied the process e⁺e⁻ → nγ (n ≥ 2) at centre-of-mass energies of 161.3 GeV and 172.1 GeV....
The process e+e− →, γγ(γ) is studied using data recorded with the OPAL detector at LEP. The data sam...
The total and differential cross sections of the process e<SUP>+</SUP>e<SUP>-</SUP>→nγ with n≥2 are ...
The production of final states involving one or more energetic photons from e+e- collisions at high ...
We have studied the process e(+)e(-)-->n gamma (n greater than or equal to 2) at centre-of-mass ener...
We have studied the process $e^+e^-{\rightarrow}\rm n {\gamma}$ $(\rm n{\ge}2)$ at centre-of-mass en...
We have studied the process $e^+e^-{\rightarrow}\rm n {\gamma}$ $(\rm n{\ge}2)$ at centre-of-mass en...
Single- and multi-photon events with missing energy are selected in 619 pb−1 of data collected by th...
AbstractSingle- and multi-photon events with missing energy are selected in 619 pb−1 of data collect...
The production of final states involving one or more energetic photons from e(+)e(-) collisions at h...
We have studied the process e + e − → nγ ( n ≥ 2) at an average center-of-mass energy of 133 GeV usi...
We have studied the process e+e- → ny (n ≥ 2) at an average center-of-mass energy of 133 GeV using t...
We have studied the process e+e-→nγ (n ≥ 2) at centre-of-mass energies of 161.3 GeV and 172.1 GeV. T...
We have studied the process e + e − → n γ (n ≥ 2) at centre-of-mass energies of 161.3 GeV and 172.1 ...
We have studied the process e⁺e⁻ → nγ (n ≥ 2) at centre-of-mass energies of 161.3 GeV and 172.1 GeV....
The process e+e− →, γγ(γ) is studied using data recorded with the OPAL detector at LEP. The data sam...
The total and differential cross sections of the process e<SUP>+</SUP>e<SUP>-</SUP>→nγ with n≥2 are ...
The production of final states involving one or more energetic photons from e+e- collisions at high ...
We have studied the process e(+)e(-)-->n gamma (n greater than or equal to 2) at centre-of-mass ener...
We have studied the process $e^+e^-{\rightarrow}\rm n {\gamma}$ $(\rm n{\ge}2)$ at centre-of-mass en...
We have studied the process $e^+e^-{\rightarrow}\rm n {\gamma}$ $(\rm n{\ge}2)$ at centre-of-mass en...
Single- and multi-photon events with missing energy are selected in 619 pb−1 of data collected by th...
AbstractSingle- and multi-photon events with missing energy are selected in 619 pb−1 of data collect...
The production of final states involving one or more energetic photons from e(+)e(-) collisions at h...