e1-6a run CLAS data
- Spokespersons
- P. Khetarpal, P. Stoler, I. Aznauryan, V. Kubarovsky,
- Year
- 2012
- Abstract
- We report the measurement of near threshold neutral pion electroproduction cross sections on the proton in the kinematic range $Q^2$ from 2 to 4.5 GeV$^2$ and $W$ from 1.08 to 1.16 GeV.
- Comment
- These measurements allow us to access the dominant pion-nucleon s-wave multipoles $E_{0+}$ and $S_{0+}$ in the near-threshold region. In the light-cone sum-rule framework (LCSR), these multipoles are related to the generalized form factors $G_1^{\pi^0 p}(Q^2)$ and $G_2^{\pi^0 p}(Q^2)$.
- Publication
-
- P. Khetarpal, P. Stoler, I. Aznauryan, V. Kubarovsky Near Threshold Neutral Pion Electroproduction at High Momentum Transfers and Generalized Form Factors // Phys. Rev. C 87, 045205 (2013); http://arxiv.org/abs/1211.6460
- Quantities
- d2σ/dcos(θπ)dφπ
Measurements
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ID | Quantity | Beam | Target | Final state |
Q2min, GeV2 |
Q2max, GeV2 |
Wmin, GeV |
Wmax, GeV |
---|---|---|---|---|---|---|---|---|
E136M1 | d2σ/dcos(θπ)dφπ | e | p | π0p | 2.0 | 4.5 | 1.08 | 1.16 |
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