2 v 2 2 7 M ay 2 00 7 Structure of Light Scalar Mesons from D s and D 0 Non - Leptonic Decays

نویسندگان

  • L. Maiani
  • A. D. Polosa
  • V. Riquer
چکیده

Non-leptonic D meson decays may provide a reliable testbed for the multiquark interpretation of light scalar mesons. In this letter we consider D s decay and show that a 4-quark f 0 (980) meson could induce a decay pattern, which is forbidden for a q ¯ q constituent structure. Experimental tests to probe such possibilities are within reach in the near future.

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

ep - p h / 07 03 27 2 v 1 2 6 M ar 2 00 7 Structure of Light Scalar Mesons from D s and D 0 Non - Leptonic Decays

Non-leptonic D meson decays may provide a reliable testbed for the multiquark interpretation of light scalar mesons. In this letter we consider D s decay and show that a 4-quark f 0 (980) meson could induce a decay pattern, which is forbidden for a q ¯ q constituent structure. Experimental tests to probe such possibilities are within reach in the near future.

متن کامل

ar X iv : h ep - p h / 00 05 10 2 v 1 1 1 M ay 2 00 0 1 Semi - Leptonic B Meson Decays to Excited D Mesons in the Covariant Oscillator Quark Model

The spectra and branching ratios of the weak semi-leptonic B meson decays to the first excited D mesons are predicted, taking into account the confined effects of quarks using the covariant oscillator quark model (COQM). In the COQM the same relation between general weak transition form factors as that in HQET is derived, and the concrete form of the IsgurWise function is given with no free par...

متن کامل

3 v 1 1 2 M ay 2 00 6 Study of Scalar Mesons at BES - II

The scalar mesons are one of the most controversial subjects in hadron physics. Below 1.0 GeV, there are two I = 0 saclar candidates, σ (ππ S-Wave), f0(980) and one I = 1/2 Kπ S-wave, κ, in the Particle Data Group (PDG) lists [1]. Between 1.0 GeV and 2.2 GeV, PDG lists the following I = 0 scalar states: f0(1370), f0(1500) f0(1710) and one I = 1/2 scalar state: K ∗ 0 (1430). Scalar mesons have b...

متن کامل

ar X iv : h ep - p h / 93 08 21 0 v 1 3 A ug 1 99 3 TWO BODY NON LEPTONIC DECAYS OF B AND B s MESONS ∗

We perform an analysis of two-body non leptonic decays of B and Bs mesons in the factorization approximation. We make use of the semileptonic decay amplitudes previously calculated on the basis of an effective lagrangian satisfying chiral and heavy quark symmetries and including spin 1 resonances. Exclusive semileptonic D-decay data are used as experimental input. Our results compare favorably ...

متن کامل

/ 02 08 03 9 v 1 2 3 A ug 2 00 2 Light Scalar Mesons σ ( 500 ) , f 0 ( 980 ) and κ in Charm Meson Decays 1

We present recent results on scalar light mesons based on Dalitz plot analyses of charm decays from Fermilab experiment E791. Scalar mesons are found to have large contributions to the decays studied, D + → K − π + π + and D + , D + s → π − π + π +. From the first decay, we find good evidence for the existence of the light and broad κ meson and we measure its mass and width. We find strong evid...

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 2008