EXPERIMENTAL ESTIMATION OF THE LIFETIME OF ATOMS FORMED BY PI(-) MESONS() AND PI()

Authors
AFANASYEV LG CHVYROV AS GORCHAKOV OE KARPUKHIN VV KOLOMYICHENKO AV KOMAROV VI KRUGLOV VV KUPTSOV AV NEMENOV LL NIKITIN MV PUSTYLNIK ZP KULIKOV AV TRUSOV SV YAZKOV VV
Citation
Lg. Afanasyev et al., EXPERIMENTAL ESTIMATION OF THE LIFETIME OF ATOMS FORMED BY PI(-) MESONS() AND PI(), Physics letters. Section B, 338(4), 1994, pp. 478-482
Citations number
20
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
338
Issue
4
Year of publication
1994
Pages
478 - 482
Database
ISI
SICI code
0370-2693(1994)338:4<478:EEOTLO>2.0.ZU;2-F
Abstract
Based on observation [L.G. Afanasyev et al., Phys. Lett. B 308 (1993) 200] of 272 +/- 49 atoms formed by pi+ and pi- an estimation of the at om lifetime in the ground (1S) state is obtained: tau1 = (2.9(-2.1)+in finity) . 10(-15) s or tau1 > 0.6 . 10(-15) s at 90% confidence level. Atoms were produced in inclusive p Ta interactions at 70 GeV.