6533b7d8fe1ef96bd1269b75
RESEARCH PRODUCT
Searching for signatures around 1920 MeV of a N-* state of three hadron nature
Eulogi OsetUlf-g. MeißnerUlf-g. MeißnerA. Martínez TorresK. P. Khemchandanisubject
associated production [K+]Nuclear and High Energy PhysicsParticle physicsNuclear TheoryHadronFOS: Physical sciences01 natural sciencesNuclear Theory (nucl-th)photon p --> Sigma0 K+0103 physical sciencesBound stateddc:530angular distributionbound state [K]010306 general physicstotal cross section(nucleon K anti-K) [bound state]Physicspolarizationhadroproduction [Lambda]intermediate state [f0(980)]photon p --> p K+ K-010308 nuclear & particles physicsFísica(1920) [nucleon resonance]Sigmaintermediate state [a0(980)]Polarization (waves)exclusive reaction [photon p]interpretation of experimentsproposed experimentphoton p --> Lambda K+description
We provide a series of arguments which support the idea that the peak seen in the gamma p -> K+ Lambda reaction around 1920 MeV should correspond to the recently predicted state of J(P) = 1/2(+) as a bound state of K(K) over bar N with a mixture of alpha(0)(980)N and f(0)(980)N components. At the same time we propose polarization experiments in that reaction as a further test of the prediction, as well as a study of the total cross-section for gamma p -> K(+)K(-)p at energies close to threshold and of d sigma/dM(inv) for invariant masses close to the two-kaon threshold.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-01-01 |