First observation of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>ψ</mml:mi><mml:mo stretchy="false">(</mml:mo><mml:mn>2</mml:mn><mml:mi>S</mml:mi><mml:mo stretchy="false">)</mml:mo><mml:mo>→</mml:mo><mml:mi>p</mml:mi><mml:mover accent="true"><mml:mi>n</mml:mi><mml:mo>¯</mml:mo></mml:mover><mml:msup><mml:mi>π</mml:mi><mml:mo>−</mml:mo></mml:msup><mml:mo>+</mml:mo><mml:mi>c</mml:mi><mml:mo>.</mml:mo><mml:mi>c</mml:mi><mml:mo>.</mml:mo></mml:math>

F. De Mori, J.Z. Bai, Y. Ban, J. G. Bian, X. Cai, H. F. Chen, H. S. Chen, H. X. Chen, Jiahui Chen, Jin Chen

Abstract

Using 14×106 ψ(2S) events collected with the Beijing Spectrometer (BESII) at the Beijing Electron-Positron Collider, the branching fractions of ψ(2S) decays to pn¯π− and p¯nπ+ and the branching fractions of the main background channels ψ(2S)→pn¯π−π0, ψ(2S)→γχc0→γpn¯π−, ψ(2S)→γχc2→γpn¯π−, and ψ(2S)→γχcJ→γpn¯π−π0 are determined. The contributions of the N* resonances in ψ(2S)→pn¯π−+c.c. are also discussed.1 MoreReceived 11 May 2006DOI:https://doi.org/10.1103/PhysRevD.74.012004©2006 American Physical Society

Locations

• Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology - View
• arXiv (Cornell University) - View - PDF
• DataCite API - View