LIFETIME OF BOUND-STATES OF NEGATIVE PIONS AND NEUTRONS

Authors
GARCILAZO H QUEIJEIRO A
Citation
H. Garcilazo et A. Queijeiro, LIFETIME OF BOUND-STATES OF NEGATIVE PIONS AND NEUTRONS, Physical review. C. Nuclear physics, 56(6), 1997, pp. 3384-3390
Citations number
22
Journal title
Physical review. C. Nuclear physics → ACNP
ISSN journal
05562813
Volume
56
Issue
6
Year of publication
1997
Pages
3384 - 3390
Database
ISI
SICI code
0556-2813(1997)56:6<3384:LOBONP>2.0.ZU;2-7
Abstract
We estimate the lifetime of systems consisting of negative pions and n eutrons (pineuts). We consider the direct decay of the pion as well as second-order diagrams involving the intermediate decay processes n -- > p + e(-) + <(nu)over bar> and pi(-) --> pi(0) + e(-) + <(nu)over bar > by assuming a simple single-particle model. We found that the domina nt process is that with an intermediate neutron decay which leads to a lifetime of around 10(-8) sec.