arXiv subjects

The SELEX collaboration

Publications and source records attributed to The SELEX collaboration.

2 recordsLinked to original sources

arXiv2001

Radiative decay width of the a2(1320)^- meson

Coherent pi^+pi^-pi^- production in the interactions of a beam of 600 GeV pi^- mesons with C, Cu and Pb nuclei has been studied with the SELEX facility (Experiment E781 at Fermilab). The a2(1320) meson signal has been detected in the Coulomb (low q^2) region. The Primakoff formalism used to extract radiative decay width of this meson yields Gamma=284+/-25+/-25 keV, which is the most precise measurement to date.

hep-ex↗

arXiv2000

Precision measurements of the Lambda_c+ and D0 lifetimes

We report new precision measurements of the lifetimes of the Lambda_c+ and D0 from SELEX, the charm hadro-production experiment at Fermilab. Based upon 1630 Lambda_c+ and 10210 D0 decays we observe lifetimes of tau[Lambda_c+] = 198.1 +- 7.0 +- 5.6 fs and tau[D0] = 407.9 +- 6.0 +- 4.3 fs

hep-ex↗