Search for Theta+ at CLAS in gamma n ---> Theta+ K-.
Conference
·
OSTI ID:917705
The existence of pentaquarks is being studied in recent experiments at Jefferson Lab. This analysis investigates the reaction gamma d --> Theta^+K^-(p) with the Theta^+ decaying to pK^0. Produced with a tagged photon beam of endpoint energy 3.6 GeV incident on a 24 cm liquid deuterium target, the pK^0_sK^-(p) final state is measured exclusively. With well defined strangeness and no neutral meson background, this channel is an important place to look for the Theta^+. However, it contains large contributions from hyperons produced via gamma n --> Y*K^0, and the effects of mesons are also present in the K^0K^- system. The current focus is on understanding these backgrounds.
- 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:
- 917705
- Report Number(s):
- JLAB-PHY-05-498; DOE/ER/40150-4370
- Country of Publication:
- United States
- Language:
- English
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