Antiproton annihilation at rest in nitrogen and deuterium gas

Journal Article · Fri Dec 01 00:00:00 EST 1989 · Physical Review (Section) C: Nuclear Physics; (USA)

DOI:https://doi.org/10.1103/PhysRevC.40.2717· OSTI ID:7163121

Riedlberger, J; Amsler, C; Doser, M; Straumann, U; Truol, P ^[1]; Bailey, D; Barlag, S; Gastaldi, U; Landua, R; Sabev, C ^[2]; Duch, K D; Heel, M; Kalinowsky, H; Kayser, F; Klempt, E; May, B; Schreiber, O; Weidenauer, P; Ziegler, M ^[3]; Dahme, W ; Feld-Dahme, F; Schaefer, U

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1. Physik Institut der Universitaet Zurich, 8001 Zurich, (Switzerland)
2. Counseil Europeen pour la Recherche Nucleaire, 1211 Geneve, (Switzerland)
3. Institut fuer Physik, Johannes-Gutenberg-Universitaet, 6500 Mainz, (Germany, F.R.)

Results on antiproton absorption at rest in gaseous nitrogen and deuterium are presented from an analysis of approximately 10{sup 6} events each taken with a magnetic spectrometer. Inclusive features such as pion and proton multiplicities and spectra are presented. Data relating to absorption modes requiring more than one nucleon, such as the {Lambda} yield, the {Lambda} spectrum, and the exclusive deuterium channels {ital {bar p}d}{r arrow}{pi}{sup {minus}}p, {Lambda}{ital K}{sup +}{pi}{sup {minus}} are discussed. The fully reconstructable channels {ital {bar p}}d{r arrow}{pi}{sup +}{pi}{sup {minus}}{pi}{sup {minus}}{ital p},{pi}{sup +}{pi}{sup +} {pi}{sup {minus}}{pi}{sup {minus}}{pi}{sup {minus}}{ital p} also show a high-energy proton tail unaccounted for by single nucleon rescattering mechanisms.

• OSTI ID: 7163121
• Journal Information: Physical Review (Section) C: Nuclear Physics; (USA), Vol. 40:6; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANTIPROTON REACTIONS
ANNIHILATION
DEUTERIUM TARGET
NITROGEN 14 TARGET
ANTIPROTON-DEUTERON INTERACTIONS
BRANCHING RATIO
INCLUSIVE INTERACTIONS
KAONS
LEAR
MULTIPLICITY
NEUTRON SPECTRA
PARTICLE PRODUCTION
PHASE SPACE
PIONS
PROTON SPECTRA
RESCATTERING
SPECTROMETERS
ANTINUCLEON REACTIONS
BARYON REACTIONS
BARYON-BARYON INTERACTIONS
BASIC INTERACTIONS
BOSONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MATHEMATICAL SPACE
MEASURING INSTRUMENTS
MESONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEON-DEUTERON INTERACTIONS
PARTICLE INTERACTIONS
PSEUDOSCALAR MESONS
SCATTERING
SPACE
SPECTRA
STRANGE MESONS
STRANGE PARTICLES
TARGETS
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