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A study of\bar np annihilations between 0.5 and 0.8 GeV/c |
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| Authors: | S Banerjee S N Ganguli A Gurtu P K Malhotra R Raghavan A Subramanian K Sudhakar M M Agarwal T K Chatterjee J M Kohli J P Lamba I S Mittra J B Singh P M Sood Dev Anand P V K S Baba G L Kaul Y Prakash N K Rao G Singh R Hamatsu T Hirose S Kitamura T Yamagata Bombay Collaboration Chandigarh Collaboration Jammu Collaboration Tokyo Collaboration |
| Institution: | 1. Tata Institute of Fundamental Research, Bombay, India 2. Panjab University, Chandigarh, India 3. University of Jammu, Jammu, India 4. Tokyo Metropolitan University, Tokyo, Japan |
| Abstract: | A study of \(\bar np\) annihilations with \(\bar n\) momentum between 0.5 and 0.8 GeV/c is presented. The search fors-channel resonances in \(\bar np\) annihilations reveal possibly two narrow structures in the odd pions final state. Inclusiveρ 0 andf 0 cross sections in \(\bar np\) annihilations have been estimated to be 9.0±0.6 mb and 3.4±0.6 mb respectively. Longitudinal and transverse momentum distributions for inclusiveρ 0 production have been presented. A study of resonance production in exclusive final state revealsρ 0 production to be dominant in the odd pion final states andρ +,ω 0 productions are most important for the even pion final states. Theπ + π ? effective mass spectra in the backward and the forward directions in the \(\bar np\) c.m. system have been examined for a possible ?-ω interference effect. |
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