Published November 1977 | Version v1
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Separation of sigmasub(L) and sigmasub(T) in eta-electroproduction at the resonance S11(1535)

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Description

The ratio R = sigmasub(L)/sigmasub(T) of longitudinal and transverse cross sections for the reaction ep → epeta at the resonance S11(1535) was measured at momentum transfers q2 = 0.6 and 1 GeV2. The transverse part dominates the longitudinal part of the cross section. Averaging from W = 1.49 GeV to W = 1.58 GeV we obtain R = 0.15 +- 0.18 at q2 = 0.6 GeV2 and R = -0.06 +- 0.16 at q2 = 1 GeV2. (orig.)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (German)

Fuer die Reaktion ep → epeta wurde bei der Resonanz S11(1535) das Verhaeltnis R = sigmasub(L)/sigmasub(T) der longitudinalen und transversalen Wirkungsquerschnitte bei Inpulsuebertraegen q2 = 0,6 und 1 GeV2 gemessen. Der transversale Anteil ueberwiegt den longitudinalen Anteil des Wirkungsquerschnitts. Wenn wir von W = 1,49 GeV mitteln, erhalten wir R = 0,15 +- 0,18 bei q2 = 0,6 GeV2 und R = - 0,06 +- 0,16 bei q2 = 1 GeV2. (orig.)

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Additional details

Publishing Information

Imprint Pagination
8 p.
Report number
DESY--77/73

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
9381398
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
DIFFERENTIAL CROSS SECTIONS; ELECTRON-PROTON INTERACTIONS; ELECTROPRODUCTION; ETA MESONS; FOUR MOMENTUM TRANSFER; LONGITUDINAL MOMENTUM; MEV RANGE 100-1000; N-1520 RESONANCES; N-1535 RESONANCES; TOTAL CROSS SECTIONS; TRANSVERSE MOMENTUM
Descriptors DEC
BARYON RESONANCES; BARYONS; BASIC INTERACTIONS; BOSONS; CROSS SECTIONS; ELECTROMAGNETIC INTERACTIONS; ELECTRON-NUCLEON INTERACTIONS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; HADRONS; INTERACTIONS; LEPTON-BARYON INTERACTIONS; LEPTON-HADRON INTERACTIONS; LEPTON-NUCLEON INTERACTIONS; LINEAR MOMENTUM; MESONS; MEV RANGE; MOMENTUM TRANSFER; N*RESONANCES; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; PSEUDOSCALAR MESONS; RESONANCE PARTICLES

Optional Information

Notes
6 figs.; 2 tabs.; 12 refs.