All-neutral final states in [bar p]p annihilation at rest

Journal Article · Fri May 01 04:00:00 EDT 1992 · Physics of Atomic Nuclei (English Translation); (United States)

OSTI ID:7233397

Peters, K ^[1]

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1. Universitaet Mainz, Mainz (Germany)

Antiproton-proton annihilation at rest is a unique source for the investigation of exotic states. The Crystal Barrel spectrometer is well suited for the detection of neutral annihilation products and is used to study all neutral final states with liquid H[sup 2] and D[sub 2] targets. The author presents annihilations into three neutral pseudoscalars in liquid H[sub 2] and a comparison to liquid D[sub 2], where he was able to confirm the X[sub 2](1515) in the 3[pi][sup 0]n final state, which was first found in a similar channel in [bar p]p reactions. Another interesting result is the first observation of the Pontecorvo-like reactions, [bar p]n[yields][pi][sup 0]n and [eta]n. 9 refs., 10 figs., 1 tab.

• OSTI ID: 7233397
• Journal Information: Physics of Atomic Nuclei (English Translation); (United States), Journal Name: Physics of Atomic Nuclei (English Translation); (United States) Vol. 55:5; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

662340* -- Hadron Interactions-- (1992-)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
BARYON-BARYON INTERACTIONS
BASIC INTERACTIONS
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
EXOTIC RESONANCES
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
NEUTRAL PARTICLES
NUCLEON-ANTINUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PARTICLES
PROTON-ANTIPROTON INTERACTIONS
RESONANCE PARTICLES