Published 1988 | Version v1
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Study of quark flavor-dependence in exclusive reactions at large momentum transfers

Creators

Description

The measurement of exclusive reactions at large momentum transfers provides an important testing ground for models of hard quark-quark scattering. We have measured cross sections or set upper limits for 12 meson-bryon (π/sup +-/p → pπ/sup +-/, p/rho//sup +-/, π+Δ/sup +-/, K+Σ/sup +-/, π/sup /minus//p → Λ0/Σ0K0, K/sup +-/p → pK/sup +-/) and 2 baryon-baryon (p/sup +-/p → pp/sup /plus minus/) reactions near 90/degree/ C.M. by studying the flavor-dependence of these 2 exclusive reactions at t = -9(GeV/c)/sup 2/, we have been able to demonstrate in a perturbative QCD picture that the quark-interchange mechanism is dominant over gluon exchange and quark-antiquark annihilation. We will also present preliminary results on many of these reactions at t = -5(GeV/c)/sup 2/ with better resolution and statistical precision. 145 refs., 3 figs

Availability note (English)

Available from NTIS, PC A03/MF A01; 1 as DE88012139.

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Additional details

Publishing Information

Imprint Pagination
10 p.
Report number
BNL--41369

Conference

Title
24. international Rochester conference on high energy physics.
Dates
4-10 Aug 1988.
Place
Munich (Germany, F.R.).

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
19102968
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CROSS SECTIONS; ELASTIC SCATTERING; EXCLUSIVE INTERACTIONS; FLAVOR MODEL; MASS DISTRIBUTION; MOMENTUM TRANSFER; QUARK-QUARK INTERACTIONS; QUARKS
Descriptors DEC
COMPOSITE MODELS; DISTRIBUTION; ELEMENTARY PARTICLES; FERMIONS; INTERACTIONS; MATHEMATICAL MODELS; PARTICLE INTERACTIONS; PARTICLE MODELS; POSTULATED PARTICLES; QUARK MODEL; SCATTERING; SPATIAL DISTRIBUTION

Optional Information

Notes
Portions of this document are illegible in microfiche products.
Secondary number(s)
CONF-880867--1.