ρ-ω interference in p̄p-annihilation at rest into π+π-η crystal barrel collaboration

A. Abele, J. Adomeit, C. Amsler, C. A. Baker, B. M. Barnett, C. J. Batty, M. Benayoun, A. Berdoz, K. Beuchert, S. Bischoff, P. Blüm, K. Braune, D. V. Bugg, T. Case, A. Cooper, O. Cramer, K. M. Crowe, V. Credé, T. Degener, N. DjaoshviliS. V. Dombrowski, M. Doser, W. Dünnweber, A. Ehmanns, D. Engelhardt, M. A. Faessler, P. Giarritta, R. Hackmann, R. P. Haddock, F. H. Heinsius, M. Heinzelmann, M. Herz, N. P. Hessey, P. Hidas, C. Hodd, C. Holtzhaußen, D. Jamnik, H. Kalinowsky, B. Kalteyer, B. Kämmle, P. Kammel, J. Kisiel, E. Klempt, H. Koch, C. Kolo, U. Kurilla, M. Kunze, M. Lakata, R. Landua, J. Lüdemann, H. Matthäy, R. McCrady, J. Meier, C. A. Meyer, L. Montanet, R. Ouared, F. Ould-Saada, K. Peters, B. Pick, C. Pietra, C. N. Pinder, M. Ratajczak, C. Regenfus, S. Resag, W. Roethel, P. Schmidt, I. Scott, R. Seibert, S. Spanier, H. Stöck, C. Straßburger, U. Strohbusch, M. Suffert, U. Thoma, M. Tischhäuser, C. Völcker, S. Wallis, D. Walther, U. Wiedner, B. S. Zou

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23 Citations (Scopus)

Abstract

The π+π- invariant mass distribution produced in p̄p annihilation at rest and recoiling against η mesons exhibits large interference between the amplitudes for ρη and ωη production. The interference can be quantitatively described within the framework of ρ-ω interference. We find full coherence between the ρη-ωη production amplitudes and a vanishing relative production phase. The implications of this result for pp annihilation dynamics are discussed.

Original languageEnglish
Pages (from-to)354-360
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume411
Issue number3-4
DOIs
Publication statusPublished - Oct 16 1997

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Abele, A., Adomeit, J., Amsler, C., Baker, C. A., Barnett, B. M., Batty, C. J., Benayoun, M., Berdoz, A., Beuchert, K., Bischoff, S., Blüm, P., Braune, K., Bugg, D. V., Case, T., Cooper, A., Cramer, O., Crowe, K. M., Credé, V., Degener, T., ... Zou, B. S. (1997). ρ-ω interference in p̄p-annihilation at rest into π+π-η crystal barrel collaboration. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 411(3-4), 354-360. https://doi.org/10.1016/S0370-2693(97)01032-0