Antiproton-proton annihilation at rest into $K^{+}K^{-}\pi^{0}$

The annihilation channel pp to K/sup +/K/sup -/ pi /sup 0/ in liquid hydrogen at rest has been studied with the Crystal Barrel detector at LEAR. The measured branching ratio is: BR(pp to K/sup +/K/sup -/ pi /sup 0/)=(2.37+or-0.15)*10/sup -3/. A partial wave analysis shows that this reaction is domin...

Descripción completa

Detalles Bibliográficos
Autores principales: Abele, A, Adomeit, J, Amsler, Claude, Baker, C A, Barnett, B M, Batty, C J, Benayoun, M, Berdoz, A R, Bischoff, S, Blüm, H P, Braune, K, Bugg, D V, Case, T, Cramer, O, Crowe, K M, Degener, T F, Doser, Michael, Dünnweber, W, Engelhardt, D, Faessler, M A, Giarritta, P, Haddock, R P, Heinsius, F H, Heinzelmann, M, Herbstrith, A, Herz, M, Hessey, N P, Hidas, P, Hodd, C, Holtzhaussen, C, Jamnik, D, Kalinowsky, H, Kammel, P, Kisiel, J, Klempt, E, Koch, H, Kunze, M, Kurilla, U, Lakata, M T, Landua, Rolf, Matthäy, H, McCrady, R G, Meier, J, Meyer, C A, Ouared, R, Peters, K, Pick, B, Ratajczak, M, Regenfus, C, Röthel, W, Seibert, R, Spanier, S M, Stöck, H, Strassburger, C, Strohbusch, U, Suffert, Martin, Suh, J S, Thoma, U, Tischhäuser, M, Uman, I, Völcker, C, Wallis-Plachner, S, Walther, D, Wiedner, U, Wittmack, K, Zou Bing Song
Lenguaje:eng
Publicado: 1999
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(99)01191-0
http://cds.cern.ch/record/426211
Descripción
Sumario:The annihilation channel pp to K/sup +/K/sup -/ pi /sup 0/ in liquid hydrogen at rest has been studied with the Crystal Barrel detector at LEAR. The measured branching ratio is: BR(pp to K/sup +/K/sup -/ pi /sup 0/)=(2.37+or-0.15)*10/sup -3/. A partial wave analysis shows that this reaction is dominated by the pi (KK)/sub S/, KK*(892) and pi phi (1020) intermediate states. Weak signals are observed for pi a /sub 2/(1320), pi f/sub 2/(1270), pi f/sub 2/'(1525) and K(K pi )/sub S/. A satisfactory description of the Dalitz plot requires the introduction of pi (KK)/sub P/ intermediate states with at least one pole. (25 refs).

Ejemplares similares