Yayın: Precision measurements of branching fractions for psi ' -> pi(0)J/psi and eta J/Psi
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
We present a precision study of the psi' -> pi(0)J/Psi and eta J/Psi decay modes. The measurements are obtained using 106 x 10(6) psi' events accumulated with the BESIII detector at the BEPCII e(+)e(-) collider operating at a center-of-mass energy corresponding to the psi' mass. We obtain B(psi' -> pi(0)J/Psi) = (1.26 +/- 0.02(stat) +/- 0.03(syst)) x 10(-3) and B(psi' -> eta J/Psi) = (33.75 +/- 0.17(stat) +/- 0.86(syst)) x 10(-3). The branching fraction ratio R = B(psi'->pi(0)J/psi)/B(psi'->eta J/psi) is determined to be (3.74 +/- 0.06(stat) +/- 0.04(syst)) x 10(-2). The precision of these measurements of B(Psi' -> pi(0)J/Psi) and R represent a significant improvement over previously published values.
Açıklama
Kaynak:
Anahtar Kelimeler:
Konusu
Astronomy & astrophysics, Physics
Alıntı
Ablikim, M. vd. (2012). "Precision measurements of branching fractions for psi ' -> pi(0)J/psi and eta J/Psi". Physical Review D, 86(9), 1-17.