학술논문
Odd and even partial waves of ηπ− and η′π− in π−p→η(′)π−p at 191 GeV/c
Document Type
article
Author
C. Adolph; R. Akhunzyanov; M.G. Alexeev; G.D. Alexeev; A. Amoroso; V. Andrieux; V. Anosov; A. Austregesilo; B. Badełek; F. Balestra; J. Barth; G. Baum; R. Beck; Y. Bedfer; A. Berlin; J. Bernhard; K. Bicker; E.R. Bielert; J. Bieling; R. Birsa; J. Bisplinghoff; M. Bodlak; M. Boer; P. Bordalo; F. Bradamante; C. Braun; A. Bressan; M. Büchele; E. Burtin; L. Capozza; M. Chiosso; S.U. Chung; A. Cicuttin; M.L. Crespo; Q. Curiel; S. Dalla Torre; S.S. Dasgupta; S. Dasgupta; O.Yu. Denisov; S.V. Donskov; N. Doshita; V. Duic; W. Dünnweber; M. Dziewiecki; A. Efremov; C. Elia; P.D. Eversheim; W. Eyrich; M. Faessler; A. Ferrero; M. Finger; M. Finger, Jr.; H. Fischer; C. Franco; N. du Fresne von Hohenesche; J.M. Friedrich; V. Frolov; F. Gautheron; O.P. Gavrichtchouk; S. Gerassimov; R. Geyer; I. Gnesi; B. Gobbo; S. Goertz; M. Gorzellik; S. Grabmüller; A. Grasso; B. Grube; T. Grussenmeyer; A. Guskov; F. Haas; D. von Harrach; D. Hahne; R. Hashimoto; F.H. Heinsius; F. Herrmann; F. Hinterberger; Ch. Höppner; N. Horikawa; N. d'Hose; S. Huber; S. Ishimoto; A. Ivanov; Yu. Ivanshin; T. Iwata; R. Jahn; V. Jary; P. Jasinski; P. Jörg; R. Joosten; E. Kabuß; B. Ketzer; G.V. Khaustov; Yu.A. Khokhlov; Yu. Kisselev; F. Klein; K. Klimaszewski; J.H. Koivuniemi; V.N. Kolosov; K. Kondo; K. Königsmann; I. Konorov; V.F. Konstantinov; A.M. Kotzinian; O. Kouznetsov; M. Krämer; Z.V. Kroumchtein; N. Kuchinski; F. Kunne; K. Kurek; R.P. Kurjata; A.A. Lednev; A. Lehmann; M. Levillain; S. Levorato; J. Lichtenstadt; A. Maggiora; A. Magnon; N. Makke; G.K. Mallot; C. Marchand; A. Martin; J. Marzec; J. Matousek; H. Matsuda; T. Matsuda; G. Meshcheryakov; W. Meyer; T. Michigami; Yu.V. Mikhailov; Y. Miyachi; A. Nagaytsev; T. Nagel; F. Nerling; S. Neubert; D. Neyret; J. Novy; W.-D. Nowak; A.S. Nunes; A.G. Olshevsky; I. Orlov; M. Ostrick; R. Panknin; D. Panzieri; B. Parsamyan; S. Paul; D.V. Peshekhonov; S. Platchkov; J. Pochodzalla; V.A. Polyakov; J. Pretz; M. Quaresma; C. Quintans; S. Ramos; C. Regali; G. Reicherz; E. Rocco; N.S. Rossiyskaya; D.I. Ryabchikov; A. Rychter; V.D. Samoylenko; A. Sandacz; S. Sarkar; I.A. Savin; G. Sbrizzai; P. Schiavon; C. Schill; T. Schlüter; K. Schmidt; H. Schmieden; K. Schönning; S. Schopferer; M. Schott; O.Yu. Shevchenko; L. Silva; L. Sinha; S. Sirtl; M. Slunecka; S. Sosio; F. Sozzi; A. Srnka; L. Steiger; M. Stolarski; M. Sulc; R. Sulej; H. Suzuki; A. Szabelski; T. Szameitat; P. Sznajder; S. Takekawa; J. ter Wolbeek; S. Tessaro; F. Tessarotto; F. Thibaud; S. Uhl; I. Uman; M. Virius; L. Wang; T. Weisrock; M. Wilfert; R. Windmolders; H. Wollny; K. Zaremba; M. Zavertyaev; E. Zemlyanichkina; M. Ziembicki; A. Zink
Source
Physics Letters B, Vol 740, Iss , Pp 303-311 (2015)
Subject
Language
English
ISSN
0370-2693
Abstract
Exclusive production of ηπ− and η′π− has been studied with a 191 GeV/c π− beam impinging on a hydrogen target at COMPASS (CERN). Partial-wave analyses reveal different odd/even angular momentum (L) characteristics in the inspected invariant mass range up to 3 GeV/c2. A striking similarity between the two systems is observed for the L=2,4,6 intensities (scaled by kinematical factors) and the relative phases. The known resonances a2(1320) and a4(2040) are in line with this similarity. In contrast, a strong enhancement of η′π− over ηπ− is found for the L=1,3,5 waves, which carry non-qq¯ quantum numbers. The L=1 intensity peaks at 1.7 GeV/c2 in η′π− and at 1.4 GeV/c2 in ηπ−, the corresponding phase motions with respect to L=2 are different.