Electroproduction of the Lambda(1520) Hyperon
Journal Article
·
· Physical Review C
The reaction ep {yields} e{prime}K{sup +} {Lambda}(1520) with {Lambda}(1520) {yields} p{prime}K{sup -} was studied at electron beam energies of 4.05, 4.25, and 4.46 GeV, using the CLAS detector at the Thomas Jefferson National Accelerator Facility. The cos {theta}{sub K{sup +}}, {phi}{sub K{sup +}}, Q{sup 2} and W dependencies of {Lambda}(1520) electroproduction are presented for the kinematic region 0.9 < Q{sup 2} <2.4 GeV{sup 2} and 1.95 < W < 2.65 GeV. 2.65 GeV. Also, the Q{sup 2} dependence of the {Lambda}(1520) decay angular distribution is presented for the first time. The cos {theta}{sub K{sup +}} angular distributions suggest t-channel diagrams dominate the production process. Fits to the {Lambda}(1520) t-channel helicity frame decay angular distributions indicate the m{sub z} = {+-} 1/2 parentage accounts for about 60% of the total yield, which suggests this reaction has a significant contribution from t-channel processes with either K{sup +} exchange or longitudinal coupling to an exchanged K*. The Q{sup 2} dependence of the {Lambda}(1520) production cross section is the same as that observed for {Lambda}(1116) photo- and electroproduction.
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 804868
- Report Number(s):
- JLAB-PHY-01-47; DOE/ER/40150-2385
- Journal Information:
- Physical Review C, Journal Name: Physical Review C Vol. 64
- Country of Publication:
- United States
- Language:
- English
Similar Records
Electroproduction of the {Lambda}(1520) hyperon
A search for {Sigma}{sup 0}{sub 5}, N{sup 0}{sub 5} and {Theta}{sup ++} pentaquark states.
Radiative decays of the Sigma0(1385) and Lambda(1520) hyperons
Journal Article
·
Mon Oct 01 00:00:00 EDT 2001
· Physical Review C
·
OSTI ID:40277180
A search for {Sigma}{sup 0}{sub 5}, N{sup 0}{sub 5} and {Theta}{sup ++} pentaquark states.
Journal Article
·
Sun Dec 31 23:00:00 EST 2006
· Phys. Rev. C
·
OSTI ID:940684
Radiative decays of the Sigma0(1385) and Lambda(1520) hyperons
Journal Article
·
Mon Feb 28 23:00:00 EST 2005
·
OSTI ID:837857