Logo del repository
  1. Home
 
Opzioni

Measurements of the (anti)p-D annihilation at rest

V. G. Ableev
•
M. Agnello
•
F. Balestra
altro
G. Zosi
1995
  • journal article

Periodico
NUCLEAR PHYSICS. A
Abstract
The measurement of different reactions of (p) over bar d annihilation at rest in a gaseous target has been performed using the OBELIX spectrometer at LEAR (CERN). A strong deviation from the OZI-rule prediction was found from the measurement of the ratio R = phi pi/omega pi in two regions of proton momenta, P < 200 MeV/c and P > 400 MeV/c: R(phi pi(-)/omega pi(-)) = (133 +/- 26) x 10(-3) and (113 +/- 30)x 10(-3), respectively. These values are about 30 times greater than the theoretical prediction. For the first time the excitation of the Delta-resonance was observed among the final-state products of (p) over bar d annihilation. The existence of a broad enhancement in the 4 pi invariant mass at m approximate to 1480 MeV, seen in previous experiments, was confirmed. A approximate to 100 MeV downward shift of the bump position, when the proton momentum increased up to P > 400 MeV/c, was also observed, while the positions of omega, rho and f(2)(1270) did not change with the proton momentum.
DOI
10.1016/0375-9474(94)00523-P
WOS
WOS:A1995QP49100001
Archivio
http://hdl.handle.net/11368/2634813
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-0000407235
Diritti
metadata only access
Soggetti
  • MEASURED PHI- OMEGA-P...

  • ABSOLUTE BRANCHING RA...

  • ANTIPROTON ANNIHILATI...

Web of Science© citazioni
44
Data di acquisizione
Mar 28, 2024
google-scholar
Get Involved!
  • Source Code
  • Documentation
  • Slack Channel
Make it your own

DSpace-CRIS can be extensively configured to meet your needs. Decide which information need to be collected and available with fine-grained security. Start updating the theme to match your nstitution's web identity.

Need professional help?

The original creators of DSpace-CRIS at 4Science can take your project to the next level, get in touch!

Realizzato con Software DSpace-CRIS - Estensione mantenuta e ottimizzata da 4Science

  • Impostazioni dei cookie
  • Informativa sulla privacy
  • Accordo con l'utente finale
  • Invia il tuo Feedback