Studies of Di-proton production at ANKE

Journal Article · Fri Oct 21 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3647466· OSTI ID:21611992

Dymov, Sergey ^[1]

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1. Physikalisches Institut II, Universitaet Erlangen-Nuernberg, 91058 Erlangen (Germany)

The study of NN-interactions with production of {sup 1}S{sub 0} proton pairs (diprotons) provides a new approach to hadron interactions at intermediate energies. The use of the polarised COSY beams and the ANKE polarised internal target allows one to conduct single and double polarization experiments. A number of processes including pd{yields}{l_brace}pp{r_brace}{sub s}n, production of one and two pions in pN collisions, and the pp{yields}{l_brace}pp{r_brace}{sub s}{gamma} process, have been investigated.Information on the near-threshold single pion production with formation of a diproton in the processes pp{yields}{l_brace}pp{r_brace}{sub s}{pi}{sup 0} and pn{yields}{l_brace}pp{r_brace}{sub s}{pi}{sup -} is urgently needed for further development of chiral perturbation theory. The measurements of d{sigma}/d{Omega}, A{sub y} and the spin-correlation coefficients A{sub x,x} and A{sub x,z} will permit an amplitude analysis that should provide a non-trivial test of the {chi}PT predictions. A combined study of these processes will lead to the isolation of the strength parameter d of the four-nucleon-pion contact interaction in {chi}PT. Preliminary ANKE results on d{sigma}/d{Omega} and A{sub y} in these processes are presented, and the future experimental programme is discussed.

• OSTI ID: 21611992
• Journal Information: AIP Conference Proceedings, Vol. 1388, Issue 1; Conference: BARYONS' 10: International conference on the structure of baryons, Osaka (Japan), 7-11 Dec 2010; Other Information: DOI: 10.1063/1.3647466; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHIRALITY
CORRELATIONS
COSY STORAGE RING
DIFFERENTIAL CROSS SECTIONS
DIPROTONS
ELECTRON PAIRS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE PRODUCTION
PERTURBATION THEORY
PIONS
POLARIZATION
POLARIZED BEAMS
POLARIZED TARGETS
SPIN
ACCELERATORS
ANGULAR MOMENTUM
BARYON-BARYON INTERACTIONS
BARYONS
BEAMS
BOSONS
CROSS SECTIONS
CYCLIC ACCELERATORS
DIBARYONS
ELEMENTARY PARTICLES
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MESONS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PROTONS
PSEUDOSCALAR MESONS
STORAGE RINGS
SYNCHROTRONS
TARGETS