On the narrow dip structure at 1.9 GeV/cp>2p> in diffractive photoproduction

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• 作者：Frabetti ; P.L. ; Cheung ; H.W.K. ; Cumalat ; J.P. ; Dallapiccola ; C. ; Ginkel ; J.F. ; Johns ; W.E. ; Nehring ; M.S. ; et. al.
• 关键词：13.25.Jx ; 13.60.Le ; 14.40.Cs
• 刊名：Physics Letters B
• 出版年：2004
• 出版时间：January 8, 2004
• 年：2004
• 卷：578
• 期：3-4
• 页码：290-296
• 全文大小：259 K

文摘

The narrow dip observed at 1.9 GeV/cp>2p> by the Fermilab experiment E687 in diffractive photoproduction of 3πp>+p>3πp>−p> is examined. The E687 data are refitted, a mechanism is proposed to explain why this resonance appears as a dip, and possible interpretations are discussed.