Search for $$\Theta^{++}$$ Pentaquarks in the Exclusive Reaction $$\gamma p\to K^+K^-p$$
Journal Article
·
OSTI ID:886879
The reaction {gamma}p {yields} K{sup +}K{sup -}p was studied at Jefferson Lab with photon energies from 1.8 to 3.8 GeV using a tagged photon beam. The goal was to search for a {Theta}{sup ++} pentaquark, a narrow doubly charged baryon state having strangeness S = +1 and isospin I = 1, in the pK{sup +} invariant mass spectrum. No statistically significant evidence of a {Theta}{sup ++} was found. Upper limits on the total and differential production cross section for the reaction {gamma}p {yields} K{sup -}{Theta}{sup ++} were obtained in the mass range from 1.5 to 2.0 GeV/c{sup 2}, with an upper limit of about 0.15 nb, 95% C.L. for a narrow resonance with a mass M{sub {Theta}{sup ++}} = 1.54 GeV/c{sup 2}. This result places a very stringent upper limit on the {Theta}{sup ++} width.
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA
- Sponsoring Organization:
- USDOE - Office of Energy Research (ER)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 886879
- Report Number(s):
- JLAB-PHY-06-496; DOE/ER/40150-3977; hep-ex/0605001
- Country of Publication:
- United States
- Language:
- English
Similar Records
Search for {theta}{sup ++} Pentaquarks in the Exclusive Reaction {gamma}p{yields}K{sup +}K{sup -}p
Search for the $\Theta^+$ pentaquark in the reaction $\gamma d \to p K^- K^+ n$
Search for the Theta+ pentaquark in the reactions gammap-->[overline K]0K+n and gammap-->[overline K]0K0p
Journal Article
·
Fri Sep 08 00:00:00 EDT 2006
· Physical Review Letters
·
OSTI ID:20860779
Search for the $\Theta^+$ pentaquark in the reaction $\gamma d \to p K^- K^+ n$
Journal Article
·
Tue Apr 04 00:00:00 EDT 2006
·
OSTI ID:878472
Search for the Theta+ pentaquark in the reactions gammap-->[overline K]0K+n and gammap-->[overline K]0K0p
Journal Article
·
Wed Nov 15 23:00:00 EST 2006
· Physical Review, D (Particles Fields)
·
OSTI ID:895075