Published December 1, 1998
| Version v1
Journal article
Induced Proton Polarization for pi0 Electroproduction at Q2 = 0.126 GeV2/c2 Around the Delta(1232) Resonance
Creators
- Glen Warren
- Ricardo Alarcon
- Christopher Armstrong
- Burin Asavapibhop
- David Barkhuff
- William Bertozzi
- Volker Burkert
- Chen, J.
- Jian-Ping Chen
- Joseph Comfort
- Daniel Dale
- George Dodson
- Dolfini, S.
- Dow, K.
- Martin Epstein
- Manouchehr Farkhondeh
- John Finn
- Shalev Gilad
- Ralf Gothe
- Xiaodong Jiang
- Mark Jones
- Kyungseon Joo
- Karabarbounis, A.
- James Kelly
- Stanley Kowalski
- Kunz, C.
- Liu, D.
- Lourie, R.W.
- Richard Madey
- Demetrius Margaziotis
- Pete Markowitz
- Justin McIntyre
- Mertz, C.
- Brian Milbrath
- Rory Miskimen
- Joseph Mitchell
- Mukhopadhyay, S.
- Costas Papanicolas
- Charles Perdrisat
- Vina Punjabi
- Liming Qin
- Paul Rutt
- Adam Sarty
- Jeffrey Shaw
- Soong, S.B.
- Tieger, D.
- Christoph Tschalaer
- William Turchinetz
- Paul Ulmer
- Scott Van Verst
- Vellidis, C.
- Lawrence Weinstein
- Steven Williamson
- Rhett Woo
- Alaen Young
- Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Description
We present a measurement of the induced proton polarization Pn in π0 electroproduction on the proton around the Δ resonance. The measurement was made at a central invariant mass and a squared four-momentum transfer of W = 1231 MeV and Q2 = 0.126 GeV2/c2, respectively. We measured a large induced polarization, Pn = -0.397 ± 0.055 ± 0.009. The data suggest that the scalar background is larger than expected from a recent effective Hamiltonian model
Additional details
Publishing Information
- Journal Title
- Physical Review. C, Nuclear Physics
- Journal Volume
- 58
- Journal Issue
- 6
- Journal Page Range
- [10 p.]
- ISSN
- 0556-2813
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 36009598
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ELECTROPRODUCTION; HAMILTONIANS; POLARIZATION; PROTONS; RESONANCE; SCALARS
- Descriptors DEC
- BARYONS; BASIC INTERACTIONS; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; INTERACTIONS; MATHEMATICAL OPERATORS; NUCLEONS; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; QUANTUM OPERATORS
Optional Information
- Contract/Grant/Project number
- AC--05-84ER40150
- Funding organization
- USDOE Office of Energy Research ER (United States)
- Secondary number(s)
- JLAB-PHY--98-51; DOE/ER--40150-2930; Nucl-ex--9901004