Study of charge symmetry breaking in dd collisions with WASA-at-COSY

Journal Article · Mon Oct 24 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3647210· OSTI ID:21608459

Wronska, Aleksandra ^[1]

---

1. Institute of Physics, Jagiellonian University, Cracow, Reymonta 4, 30-059 Cracow (Poland)

Charge symmetry is an approximate symmetry of the strong interaction. Studies of its breaking can yield information on the u and d quark mass difference. A theoretical collaboration is currently working on the description of charge symmetry breaking mechanisms for dd{yields}{alpha}{pi}{sup 0} and np{yields}d{pi}{sup 0} within Chiral Perturbation Theory, using the data from TRI-UMF and IUCF. One of the items in the program of the WASA-at-COSY collaboration is to extend the data base for the dd{yields}{alpha}{pi}{sup 0} reaction to higher energies, which would allow the extraction of the information on the p-wave. Status of the analysis of experimental data along with the preliminary results from the pilot run will be presented here.

• OSTI ID: 21608459
• Journal Information: AIP Conference Proceedings, Vol. 1374, Issue 1; Conference: MENU 2010: 12. international conference on meson-nucleon physics and the structure of the nucleon, Williamsburg, VA (United States), 31 May - 4 Jun 2010; Other Information: DOI: 10.1063/1.3647210; (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

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ALPHA PARTICLES
APPROXIMATIONS
C INVARIANCE
CHIRAL SYMMETRY
CHIRALITY
COSY STORAGE RING
D QUARKS
DEUTERIUM TARGET
DEUTERON REACTIONS
DEUTERONS
MASS DIFFERENCE
MULTIPARTICLE SPECTROMETERS
P WAVES
PARTICLE IDENTIFICATION
PIONS NEUTRAL
REST MASS
STRONG INTERACTIONS
SYMMETRY BREAKING
ACCELERATORS
BASIC INTERACTIONS
BOSONS
CALCULATION METHODS
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CYCLIC ACCELERATORS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
INTERACTIONS
INVARIANCE PRINCIPLES
IONIZING RADIATIONS
MASS
MEASURING INSTRUMENTS
MESONS
NUCLEAR REACTIONS
PARTIAL WAVES
PARTICLE PROPERTIES
PIONS
PSEUDOSCALAR MESONS
QUARKS
RADIATIONS
SPECTROMETERS
STORAGE RINGS
SYMMETRY
SYNCHROTRONS
TARGETS