Yayın: Experimental study of psi ' decays to K+K- pi(0) and K+K-eta
Dosyalar
Tarih
Kurum Yazarları
Tapan, İlhan
Yazarlar
Ablikim, M.
Achasov, Mikhail N.
Albayrak, Onur
Ambrose, D. J.
An, F. F.
An, Q.
Bai, J. Z.
Ban, Y.
Becker, J.
Bennett, J. V.
Danışman
Dil
Türü
Yayıncı:
Amer Physical
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Özet
Using (106 +/- 4) x 10(6) psi ' events accumulated with the BESIII detector at the BEPCII e(+)e(-) collider, we present measurements of the branching fractions for psi' decays to K+K- pi(0) and K+K- eta. In these final states, the decay psi' -> K-2(*) (1430)(+) K- + 10(-5), is observed for the first time, and its branching fraction is measured to be (7.12 +/- 0: 62(stat)(-0.61)(+1.13) (syst)) x 10(-5), which indicates a violation of the helicity selection rule in psi' decays. The branching fractions of psi' -> K* (892)(+) K- + c.c., phi eta, and phi pi(0) are also measured. The measurements are used to test the QCD predictions on charmonium decays.
Açıklama
Kaynak:
Anahtar Kelimeler:
Konusu
Astronomy & astrophysics, Physics
Alıntı
Ablikim, M. vd. (2012). "Experimental study of psi ' decays to K+K- pi(0) and K+K-eta". Physical Review D, 86(7).