Exclusive π0p electroproduction off protons in the resonance region at photon virtualities 0.4 GeV2≤Q2≤1 GeV2 EXCLUSIVE π0p ELECTROPRODUCTION off ⋯ N. MARKOV et al.
DOI
10.1103/PhysRevC.101.015208
Document Type
Journal Article
Publication Date
1-21-2020
Publication Title
Physical Review C
Volume
101
Issue
1
ISSN
24699985
Abstract
The exclusive electroproduction process ep→e′p′π0 was measured in the range of photon virtualities Q2=0.4-1.0GeV2 and the invariant mass range of the pπ0 system of W=1.1-1.8 GeV. These kinematics are covered in exclusive π0 electroproduction off the proton with nearly complete angular coverage in the pπ0 center-of-mass system and with high statistical accuracy. Nearly 36 000 cross-section points were measured, and the structure functions σT+ϵσL,σLT, and σTT, were extracted via fitting the φπ0 dependence of the cross section. A Legendre polynomial expansion analysis demonstrates the sensitivity of our data to high-lying N∗ and Δ∗ resonances with M>1.6 GeV. As part of a broad effort to determine the electrocouplings of the N∗ and Δ∗ resonances using both single- and double-pion electroproduction, this dataset is crucial for the reliable extraction of the high-lying resonance electrocouplings from the combined isospin analysis of the Nπ and π+π-p channels.
Open Access
Green Accepted
Preprint
Repository Citation
Markov, N., Joo, K., Burkert, V., Mokeev, V., Smith, L., Ungaro, M., Adhikari, S., Amaryan, M., Angelini, G., Atac, H., Avakian, H., Ayerbe Gayoso, C., Baltzell, N., Barion, L., Battaglieri, M., Bedlinskiy, I., & Bedlinskiy, I. (2020). Exclusive π0p electroproduction off protons in the resonance region at photon virtualities 0.4 GeV2≤Q2≤1 GeV2 EXCLUSIVE π0p ELECTROPRODUCTION off ⋯ N. MARKOV et al.. Physical Review C, 101 (1). https://doi.org/10.1103/PhysRevC.101.015208