Amplitude analysis of $\ensuremath{\gamma}n\ensuremath{\rightarrow}{\ensuremath{\pi}}^{\ensuremath{-}}p$ data above 1 GeV

Amplitude analysis of $γ n \to π^{-} p$ data above 1 GeV

W. Chen, H. Gao, W. J. Briscoe, D. Dutta, A. E. Kudryavtsev, M. Mirazita, M. W. Paris, P. Rossi, S. Stepanyan, I. I. Strakovsky, V. E. Tarasov, and R. L. Workman

Phys. Rev. C 86, 015206 – Published 12 July 2012

Abstract

We report an extraction of nucleon resonance couplings using $π^{-}$ photoproduction cross sections on the neutron. The world database for the process $γ n \to π^{-} p$ above 1 GeV has quadrupled with the addition of differential cross sections from the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab in Hall B. Differential cross sections from CLAS have been improved with a final-state interaction determination using a diagrammatic technique taking into account the $N N$ and $π N$ final-state interaction amplitudes. Resonance couplings have been extracted and compared to previous determinations. With the addition of these cross sections significant changes are seen in the high-energy behavior of the Scattering Analysis Interactive Dial-in program cross sections and amplitudes.

Received 22 March 2012

DOI:https://doi.org/10.1103/PhysRevC.86.015206

Authors & Affiliations

W. Chen¹, H. Gao¹, W. J. Briscoe², D. Dutta³, A. E. Kudryavtsev^2,4, M. Mirazita⁵, M. W. Paris^2,6, P. Rossi⁵, S. Stepanyan⁷, I. I. Strakovsky², V. E. Tarasov⁴, and R. L. Workman²

¹Duke University, Durham, North Carolina 27708, USA
²The George Washington University, Washington, DC 20052, USA
³Mississippi State University, Mississippi State, Mississippi 39762, USA
⁴Institute of Theoretical and Experimental Physics, Moscow, 117259 Russia
⁵INFN, Laboratori Nazionali di Frascati, 00044 Frascati, Italy
⁶Theory Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
⁷Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 86, Iss. 1 — July 2012

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Physical Review C

covering nuclear physics

Amplitude analysis of $γ n \to π^{-} p$ data above 1 GeV

W. Chen, H. Gao, W. J. Briscoe, D. Dutta, A. E. Kudryavtsev, M. Mirazita, M. W. Paris, P. Rossi, S. Stepanyan, I. I. Strakovsky, V. E. Tarasov, and R. L. Workman

Phys. Rev. C 86, 015206 – Published 12 July 2012

Abstract

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Physical Review C

covering nuclear physics

Amplitude analysis of γn→π−p data above 1 GeV

W. Chen, H. Gao, W. J. Briscoe, D. Dutta, A. E. Kudryavtsev, M. Mirazita, M. W. Paris, P. Rossi, S. Stepanyan, I. I. Strakovsky, V. E. Tarasov, and R. L. Workman

Phys. Rev. C 86, 015206 – Published 12 July 2012

Abstract

Authors & Affiliations

Article Text (Subscription Required)

References (Subscription Required)

Issue

Access Options

Authorization Required

Other Options

Download & Share

Images

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Log In

Search

Article Lookup

Paste a citation or DOI

Enter a citation

Amplitude analysis of $γ n \to π^{-} p$ data above 1 GeV