Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-07-15
Phys.Rev.D72:054012,2005
Physics
High Energy Physics
High Energy Physics - Phenomenology
29 pages, 15 figures. A few corrections in introduction and acknowledgment, typo corrections and added reference
Scientific paper
10.1103/PhysRevD.72.054012
We estimate the reaction mechanisms for the photoproduction of the Theta^+(1540) resonance on the nucleon, through K and K^* Regge exchanges. We compare the size of the cross sections for the gamma n -> K^- Theta^+ and gamma p -> K^0 bar Theta^+ reactions, and investigate their sensitivity to the spin-parity assignments J^P = 1/2^\pm, 3/2^\pm for the Theta^+ resonance. The model allows to estimate the cross sections corresponding with a given upper bound on the width of the Theta^+. Within this model, the cross sections on the neutron are found to be around a factor 5 larger than the ones on the proton, due to the presence of charged K exchange for the reaction on a neutron target. Furthermore, the photon asymmetry is found to display a pronounced sensitivity to the parity of the Theta^+, making it a very promising observable to help determining the quantum numbers of the Theta^+ resonance.
Guidal Michel
Kwee Hendra
Polyakov Maxim V.
Vanderhaeghen Marc
No associations
LandOfFree
Photoproduction of the Theta^+ resonance on the nucleon in a Regge model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Photoproduction of the Theta^+ resonance on the nucleon in a Regge model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photoproduction of the Theta^+ resonance on the nucleon in a Regge model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-411511