Antiproton-proton annihilation at rest into KLKSπ0π0

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, O. Cramer, V. Credé, K. M. Crowe, T. Degener, N. Djaoshvili, S. V. DombrowskiM. Doser, W. Dünnweber, A. Ehmanns, D. Engelhardt, M. A. Faessler, C. Felix, P. Giarritta, R. P. Haddock, F. H. Heinsius, M. Heinzelmann, M. Herz, N. P. Hessey, P. Hidas, C. Hodd, C. Holtzhaußen, D. Jamnik, H. Kalinowsky, B. Kämmle, P. Kammel, J. Kisiel, E. Klempt, H. Koch, C. Kolo, M. Kunze, U. Kurilla, M. Lakata, R. Landua, 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. Ratajcak, C. Regenfus, J. Reißmann, 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, Č Zupančič

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35 Citations (Scopus)

Abstract

The annihilation channel p̄p → KLKSπ0π0 was studied with the Crystal Barrel detector at LEAR. This final state with negative C-parity is dominated by the strange resonances K * (892), K1(1270), K1(1400) and K*0(1430). In addition, a JPC = 1+- state is seen in the K * K decay mode. This state could be the isoscalar, axialvector h′1 seen here with a mass of m = (1440 ± 60) MeV/c2 and a width of Γ = (170 ± 80) MeV/c2.

Original languageEnglish
Pages (from-to)280-288
Number of pages9
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume415
Issue number3
DOIs
Publication statusPublished - Dec 18 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., Cramer, O., Credé, V., Crowe, K. M., Degener, T., Djaoshvili, N., ... Zupančič, Č. (1997). Antiproton-proton annihilation at rest into KLKSπ0π0. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 415(3), 280-288. https://doi.org/10.1016/S0370-2693(97)01268-9