An experiment has been undertaken at the CERN SPS, using the Omega spectrometer, aimed at confirming the enhancement observed in a ppφ- mass spectrum at 2.95 GeV [1]. With statistics of twelve times the original experiment no signal is seen. In the reaction φ-p→ppφ-p, the upper limit (four standard deviations) for the production of a resonance in the ppφ- system at 2.95 GeV, with a width ≤ 30 MeV, is 50 nb.
A high statistics search for the mass enhancement at 2.95 GeV / T. Armstrong, B. Baccari, M. Belletti, P. Booth, P. Campbell, L. Carroll, G. Costa, R. Donald, D. Edwards, C. Evangelista, D. Frame, B. French, S. Geer, P. Girtler, B. Ghidini, I. Hughes, J. Jackson, E. Königs, J. Lynch, L. Mandelli, P. Mättig, D. Miller, P. Minto, W. Mitaroff, K. Müller, G. Otter, A. Palano, S. Pensotti, L. Perini, J. Pinfold, W. Range, J. Richardson, G. Rudolph, F. Saleemi, L. Scott, H. Schlütter, D. Stewart, M. Tamborini, A. Thompson, R. Turnbull, P. Woodworth, G. Zito. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 85:2-3(1979 Aug 13), pp. 304-307. [10.1016/0370-2693(79)90603-8]
A high statistics search for the mass enhancement at 2.95 GeV
L. Perini;
1979
Abstract
An experiment has been undertaken at the CERN SPS, using the Omega spectrometer, aimed at confirming the enhancement observed in a ppφ- mass spectrum at 2.95 GeV [1]. With statistics of twelve times the original experiment no signal is seen. In the reaction φ-p→ppφ-p, the upper limit (four standard deviations) for the production of a resonance in the ppφ- system at 2.95 GeV, with a width ≤ 30 MeV, is 50 nb.File | Dimensione | Formato | |
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