Analysis of Channel 0 0 0 in the 6 Nal State of Pp Annihilation at Rest Technical Report

نویسنده

  • Stefan Spanier
چکیده

The nal state 0 0 0 with 0 ! and 0 ! is reconstructed using the method of side-bin subtraction. The innuence of background from other 6-photon channels is checked by Monte-Carlo simulation and a variation of probabilities of the kinematic t. A partial wave analysis is applied. The plot can be described with the S-wave in the 0 0 subsystem and the a 2 (1320) and the a 0 (1450) decaying into 0 0. The decay strength of the a 0 (1450) into 0 0 in comparison to 0 is compatible with the expectation of SU(3).

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Evidence for a 0 (1450) ! Kk in Pp Annihilation at Rest

We present evidence for a 0 (1450) decaying to KK in pp annihilation at rest in liquid hydrogen in the nal state K L K. This reaction is important for the study of the KK decay mode of scalar resonances, in particular the isovectors a 0 (980) and a 0 (1450). The determination of the a 0 (1450) production also xes the KK coupling of the isoscalar f 0 (1500). We

متن کامل

Higher Order Two Step Mechanisms in Nucleon Antinucleon Annihilation and the OZI Rule

We evaluate three meson doorway mechanisms for nucleon-antinucleon annihilation at rest for the first time. Detailed results are presented for the final state φπ 0 originating from the 3 S 1 initial state and for the φρ channel originating from 1 S 0. The results presented also include the improved contributions from two meson doorway states and from the tree diagrams. For all the channels cons...

متن کامل

2 Meson Spectroscopy at LEAR with the

The CRYSTAL BARREL Collaboration has reported the discovery of the scalar mesons a 0 (1450) 1, 2] and f 0 (1370), together with a relatively narrow f 0 (1500), decaying into 0 0 3], 4], 0 5], K L K L 6] and 4 0 7]. The f 0 (1500) is interpreted as a glueball 8], but its precise KK decay rate has still not been measured precisely 6]. Also, a scalar ss meson decaying mainly into KK is needed to c...

متن کامل

Proton-antiproton Annihilation at 900 Mev=c into 0 0 0 , 0 0 and 0 the Crystal Barrel Collaboration

The three reactions pp ! 0 0 , 0 0 and 0 in proton-antiproton annihilation in ight at 900 MeV=c are used to search for isoscalar 0 and 2 mesons in the mass range 100

متن کامل

–1– THE η(1405), η(1475), f1(1420), AND f1(1510)

The first observation of the η(1440) was made in pp annihilation at rest into η(1440)π+π−, η(1440) → KKπ [1]. This state was reported to decay through a0(980)π and K ∗(892)K with roughly equal contributions. The η(1440) was also observed in radiative J/ψ(1S) decay into KKπ [2–4] and γρ [5]. There is now evidence for the existence of two pseudoscalars in this mass region, the η(1405) and η(1475)...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2007