Narrow resonances studies with the radiative return method

Journal Article · Sat May 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.094014· OSTI ID:21409938

Czyz, Henryk ^[1]; Grzelinska, Agnieszka ^[2]; Kuehn, Johann H ^[3]

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1. Institute of Physics, University of Silesia, PL-40007 Katowice (Poland)
2. Institute of Nuclear Physics Polish Academy of Sciences, PL-31342 Cracow (Poland)
3. Institut fuer Theoretische Teilchenphysik, Karlsruhe Institute of Technology, D-76128 Karlsruhe (Germany)

Using the radiative return method, experiments at high luminosity electron-positron colliders allow one to explore the kaon and the pion form factors in the timelike region up to fairly high energies. This opens the possibility to study kaon and pion pair production at and around the narrow resonances J/{psi} and {psi}(2S) and to explore the interference between electromagnetic and hadronic amplitudes. Parametrizations of charged and neutral kaon as well as pion form factors are derived, which lead to an improved description of the data in the region of large invariant masses of the meson pair. These form factors are combined with the hadronic couplings of charged and neutral kaons to J/{psi} and {psi}(2S) and implemented into the Monte Carlo generator PHOKHARA, which is now, for the first time, able to simulate the production of narrow resonances and their decay into kaon, pion, and muon pairs.

• OSTI ID: 21409938
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 9; Other Information: DOI: 10.1103/PhysRevD.81.094014; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
COUPLINGS
ELECTRON-POSITRON COLLISIONS
FORM FACTORS
INTERFERENCE
J PSI-3097 MESONS
KAONS NEUTRAL
LUMINOSITY
MASS
MONTE CARLO METHOD
MUON PAIRS
PAIR PRODUCTION
PARTICLE DECAY
PIONS
RESONANCE
BOSONS
CALCULATION METHODS
CHARMONIUM
COLLISIONS
DECAY
DIMENSIONLESS NUMBERS
ELECTRON COLLISIONS
ELEMENTARY PARTICLES
HADRONS
INTERACTIONS
KAONS
MESONS
OPTICAL PROPERTIES
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
POSITRON COLLISIONS
PSEUDOSCALAR MESONS
QUARKONIUM
STRANGE MESONS
STRANGE PARTICLES
VECTOR MESONS