Black sphere model for the linewidths of P-state protonium

Journal Article · Sat Dec 31 23:00:00 EST 1977 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.17.215· OSTI ID:5034055

Kaufmann, W B; Pilkuhn, H

The annihilation widths of nP p-barp bound states (protonium) are calculated in the Wentzel-Kramers-Brillouin approximation for a totally absorbing sphere, including the coupling to nn states. It is shown that the annihilation occurs preferentially in one of the two possible isospin eigenstates, and that on the average it is 100 times stronger than the radiative 2P-1S transition. A simple formula for the n dependence of the annihilation widths is also given.

• Research Organization: Arizona State University, Tempe, Arizona 85281
• OSTI ID: 5034055
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 17:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

645101* -- High Energy Physics-- Particle Interactions & Properties-Experimental-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BARYON-BARYON INTERACTIONS
BASIC INTERACTIONS
BOUND STATE
COULOMB FIELD
EIGENSTATES
ELECTRIC FIELDS
ELECTROMAGNETIC INTERACTIONS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
HADRON-HADRON INTERACTIONS
INTERACTIONS
ISOSPIN
LINE WIDTHS
NUCLEON-ANTINUCLEON INTERACTIONS
P STATES
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PROTON-ANTIPROTON INTERACTIONS
PROTONIUM
WKB APPROXIMATION