Pentaquarks: the Latest Experimental Results.

Battaglieri, M. ; De Vita, R. ; Kubarovsky, V.

Technical Information Center Oak Ridge Tennessee

关键词: Pentaquarks;    Deuterium target;    Openings;    Photoproduction;    Protons;   

RP-ID  :  DE2006876013

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

After the claim of the possible discovery of a pentaquark state, many experiments reported positive and negative results opening a discussion about the pentaquark existence. New experiments with high resolution and high statistics are needed in the reaction channels and for the kinematics of the positive results to solve the controversy. Jefferson Lab started a comprehensive program to search for pentaquark in photoproduction at threshold on proton and deuteron targets, collecting more than 10 times the existing statistics. The first experiment on the proton (g11) just finished to analyze the data, and the first results of the pentaquark search are reported here.