The narrow dip observed at 1.9 GeV/c2 by the Fermilab experiment E687 in diffractive photoproduction of 3pi+3pi− 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.
On the narrow dip structure at 1.9 GeV/c2 in diffractive photoproduction / P.L. Frabetti, H.W.K. Cheung, J.P. Cumalatb, C. Dallapiccola, J.F. Ginkel, W.E. Johns, M.S. Nehring, E.W. Vaandering, J.N. Butler, S. Cihangir, I. Gaines, P.H. Garbincius, L. Garren, S.A. Gourlay, D.J. Harding, P. Kasper, A. Kreymer, P. Lebrun, S. Shukla, M. Vittone, R. Baldini-Ferroli, L. Benussi, M. Bertani, S. Bianco, F.L. Fabbri, S. Pacetti, A. Zallo, C. Cawlfield, R. Culbertson, R.W. Gardner, E. Gottschalk, R. Greene, K. Park, A. Rahimi, J. Wiss, G. Alimonti, G. Bellini, M. Boschini, D. Brambilla, B. Caccianiga, L. Cinquini, M. DiCorato, P. Dini, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, E. Meroni, L. Milazzo, L. Moroni, D. Pedrini, L. Perasso, F. Prelz, A. Sala, S. Sala, D. Torretta, D. Buchholz, D. Claesg, B. Gobbi, B. O'Reilly, J.M. Bishop, N.M. Cason, C.J. Kennedy, G.N. Kim, T.F. Lin, D.L. Puseljic, R.C. Ruchti, W.D. Shephard, J.A. Swiatek, Z.Y. Wu, V. Arena, G. Boca, G. Bonomi, C. Castoldi, G. Gianini, M. Merlo, S.P. Ratti, C. Riccardi, L. Viola, P. Vitulo, A.M. Lopez, L. Mendez, A. Mirles, E. Montiel, D. Olaya, J.E. Ramirez, C. Rivera, Y. Zhang, J.M. Link, V.S. Paolone, P.M. Yager, J.R. Wilson, J. Cao, M. Hosack, P.D. Sheldon, F. Davenport, K. Cho, K. Danyo, T. Handler, B.G. Cheon, Y.S. Chung, J.S. Kang, K.Y. Kim, K.B. Lee, S.S. Myun. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 578:3-4(2004 Jan 08), pp. 290-296. [10.1016/j.physletb.2003.10.071]
On the narrow dip structure at 1.9 GeV/c2 in diffractive photoproduction
G. Alimonti;G. Bellini;B. Caccianiga;M. Dicorato;F. Leveraro;E. Meroni;G. Gianini;
2004
Abstract
The narrow dip observed at 1.9 GeV/c2 by the Fermilab experiment E687 in diffractive photoproduction of 3pi+3pi− 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.
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