Cumulative particle production in p sup 20 Ne interactions at 300 GeV

Journal Article · Wed Jul 01 00:00:00 EDT 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.46.45· OSTI ID:7235143

Yuldashev, B S ^[1]; Alimov, M A; Allaberdin, M L; Artykov, K K; Edgorov, S O; Inogamov, S V; Khaneles, A V; Lutpullaev, S L; Rasulov, N; Rodionova, T P; Turdaliev, K T; Turumov, E; Yuldashev, A A ^[2]; Loveless, R J; Reeder, D D ^[3]

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1. Department of Physics, University of Washington, Seattle, Washington 98195 (United States)
2. Physical Technical Institute, The Uzbek Academy of Sciences, Tashkent 700084 (USSR)
3. Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)

The experimental data on multiplicity, correlations, and inclusive spectra of protons, {pi}{sup {plus minus}} mesons, {gamma}, neutral strange particles, and fast neutrons produced in the backward ({theta}{sub lab}{gt}90{degree}) hemisphere in the laboratory system are presented for {ital p} {sup 20}Ne interactions and compared with predictions generated by the additive quark model, the Lund model, and the dual parton model. Whereas all these models adequately reproduce the {pi} and {gamma} data, only the additive quark model is consistent with the proton data. Strong evidence for the production of backward-emitted isobars is presented and lower limits (corresponding to {theta}{sub lab}{sup {pi}}{gt}90{degree}) are measured to be {sigma}({Delta}{sup ++})=6.6{plus minus}1.1 mb, {sigma}({Delta}{sup 0})=8.1{plus minus}1.0 mb, and {sigma}({ital N}{sup *}(1440))=3.3{plus minus}0.6 mb. These backward isobars are responsible for {similar to}30% of the backward {pi}{sup {plus minus}}. The evidence is much weaker for backward {rho}{sup 0} ({sigma}({rho}{sup 0})=0.81{sub {minus}0.81}{sup +0.21} mb) and {omega}{sup 0} ({sigma}({omega}{sup 0})=0.69{sub {minus}0.69}{sup +0.19} mb) at 95% C.L. Evidence of correlations between backward, cumulative protons and forward protons is presented. Using these correlations we present evidence for absorption of pions by quasi-two-nucleon systems within the neon nucleus: {sigma}({pi}+ {ital b}''{r arrow}{ital pp})=18.6{plus minus}3.0 mb and {sigma}({pi}+ {ital b}''{r arrow}{Delta}{ital p})=2.7{plus minus}1.6 mb.

• OSTI ID: 7235143
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 46:1; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PROTON-NUCLEON INTERACTIONS
PARTICLE PRODUCTION
ANGULAR DISTRIBUTION
EXPERIMENTAL DATA
GEV RANGE 100-1000
INCLUSIVE INTERACTIONS
LIMITING FRAGMENTATION
MULTIPLICITY
NEON 20
PARTON MODEL
PHOTONS
PIONS MINUS
PIONS PLUS
QUARK MODEL
SPACE-TIME
STRANGE PARTICLES
BARYON-BARYON INTERACTIONS
BOSONS
COMPOSITE MODELS
DATA
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
EVEN-EVEN NUCLEI
GEV RANGE
HADRON-HADRON INTERACTIONS
HADRONS
HYPOTHESIS
INFORMATION
INTERACTIONS
ISOTOPES
LIGHT NUCLEI
MASSLESS PARTICLES
MATHEMATICAL MODELS
MESONS
NEON ISOTOPES
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE MODELS
PIONS
PSEUDOSCALAR MESONS
STABLE ISOTOPES
662340* - Hadron Interactions- (1992-)
662240 - Models for Strong Interactions- (1992-)