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Measurement E15M78

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Experiment: E99-105, 2002

Spokespersons: M. Garçon, M. Guidal, E. S. Smith

Measurement comment: Omega spin matrix elements from method of moments, background unsubtracted. Data were integrated up to t' =  t0 - t < 0.5 GeV2. The abscissa (arguments n = 1 - 15) corresponds to the following list of matrix elements: r0004, Re r1004, r1-104, r001, r111, Re r101, r1-11, Im r102, Im r1-12, r005, r115, Re r105, r1-15, Im r106, Im r1-16. Virtual photon polarization parameter ε = 0.735. Mandelstam variable –t = 0.906 GeV2. Errors include systematics, added in quadrature.

Publication:

Quantity measured: r, dimensionless
Spin matrix element.
Beam: e, polarization: none
Target: p (Z=1, A=1), polarization: none
Final state: ω p, polarization: none

Q2 : 2.534 GeV2
W : 1.957 GeV
xb : 0.463
ε : 0.735

Observable quantity measured (Y axis): r, dimensionless
Plot measurement data

Parameter (X axis): n, number of argument from the list

Click here to get data in text file, delimited with tabs.

Measured data:

n,
number of argument from the list
r,
dimensionless
Data errors,
dimensionless
1 0.42 0.06
2 0.06 0.04
3 -0.09 0.05
4 -0.16 0.13
5 0 0.08
6 -0.17 0.07
7 -0.09 0.1
8 -0.12 0.07
9 -0.06 0.1
10 0.11 0.07
11 -0.04 0.04
12 0.06 0.04
13 0.01 0.05
14 0.03 0.04
15 -0.05 0.05