Published September 19, 2006
| Version v1
Report
A Search for Sigma50, N50 and Theta++ Pentaquark States
Creators
- Yi Qiang
- John Annand
- John Arrington
- Yakov Azimov
- William Bertozzi
- Gordon Cates
- Jian-Ping Chen
- Seonho Choi
- Eugene Chudakov
- Francesco Cusanno
- Cornelis De Jager
- Martin Epstein
- Robert Feuerbach
- Franco Garibaldi
- Olivier Gayou
- Ronald Gilman
- Javier Gomez
- David Hamilton
- Jens-ole Hansen
- Douglas Higinbotham
- Timothy Holmstrom
- Mauro Iodice
- Xiaodong Jiang
- Mark Jones
- John LeRose
- Richard Lindgren
- Nilanga Liyanage
- Demetrius Margaziotis
- Pete Markowitz
- Vahe Mamyan
- Robert Michaels
- Zein-Eddine Meziani
- Peter Monaghan
- C. Munoz-Camacho
- Vladimir Nelyubin
- Kent Paschke
- Eliazer Piasetzky
- Igor Rachek
- Paul Reimer
- Joerg Reinhold
- Bodo Reitz
- Rikki Roche
- Arunava Saha
- Adam Sarty
- Elaine Schulte
- Albert Shahinyan
- Ran Sheyor
- I.I. Strakovsky
- Ramesh Subedi
- Riad Suleiman
- V. Sulkovsky
- Bogdan Wojtsekhowski
- Xiaochao Zheng
- Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Description
A high-resolution (σinstr. = 1.5 MeV) search for narrow states (Λ < 10 MeV) with masses of Mx ∼ 1500-1850 MeV in ep → e' K+ X, e' K- X and e' π+ X electroproduction at small angles and low Q2 was performed. These states would be candidate partner states of the reported Θ+(1540) pentaquark. No statistically significant signal was observed in any of the channels at 90% C.L. Upper limits on forward production were determined to be between 0.7% and 4.2% of the Λ(1520) production cross section, depending on the channel and the assumed mass and width of the state.
Additional details
Publishing Information
- Imprint Pagination
- vp.
- Report number
- JLAB-PHY--06-537
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 38005777
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Non-conventional Literature
- Descriptors DEI
- CROSS SECTIONS; DETECTION; ELECTRON-POSITRON COLLISIONS; ELECTROPRODUCTION; LAMBDA-1520 BARYONS; QUARKS
- Descriptors DEC
- BARYONS; BASIC INTERACTIONS; COLLISIONS; ELECTROMAGNETIC INTERACTIONS; ELECTRON COLLISIONS; ELEMENTARY PARTICLES; FERMIONS; HADRONS; HYPERONS; INTERACTIONS; LAMBDA BARYONS; PARTICLE INTERACTIONS; PARTICLE PRODUCTION; POSITRON COLLISIONS; STRANGE PARTICLES
Optional Information
- Contract/Grant/Project number
- Modification No. M175; AC05-84ER40150
- Funding organization
- USDOE - Office of Energy Research ER (United States)
- Secondary number(s)
- DOE/ER--40150-4033; hep-ex--0609025