ar X iv : h ep - p h / 06 11 23 8 v 3 2 6 Fe b 20 07 K ∗ - couplings for the antidecuplet excitation
نویسندگان
چکیده
We estimate the coupling of the K∗ vector meson to the N → Θ transition employing unitary symmetry, vector meson dominance, and results from the GRAAL Collaboration for η photoproduction off the neutron. Our small numerical value for the coupling constant is consistent with the nonobservation of the Θ in recent CLAS searches for its photoproduction. We also estimate the K∗coupling for the N → Σ∗ excitation, with Σ∗ being the Σ-like antidecuplet partner of the Θ -baryon.
منابع مشابه
ar X iv : h ep - p h / 06 11 23 8 v 2 2 6 N ov 2 00 6 K ∗ - couplings for the antidecuplet excitation Ya
We estimate the coupling of K∗ vector meson to the N → Θ transition employing the unitary symmetry, vector meson dominance, and results of the GRAAL Collaboration on the η photoproduction off the neutron. Our small numerical value of the coupling confirms that the CLAS Collaboration null results do not contradict to theoretical expectations for the Θ-production. We also estimate the K∗coupling ...
متن کاملar X iv : h ep - p h / 06 11 23 8 v 1 1 7 N ov 2 00 6 K ∗ - couplings for the antidecuplet excitation
We estimate the coupling of K∗ vector meson to the N → Θ transition employing the unitary simmetry, vector meson dominance, and results of the GRAAL Collaboration on the η photoproduction off the neutron. Our small numerical value confirms that the CLAS Collaboration null results do not contradict to theoretical expectations for the Θ-production. We also estimate the K∗-coupling for the N → Σ∗ ...
متن کاملar X iv : h ep - p h / 06 03 00 1 v 1 2 8 Fe b 20 06 NuFact 05 Working Group 2 Summary : Experimental Results in Neutrino Scattering Physics
This paper summarizes the experimental results in neutrino scattering physics as presented in Working Group 2. A summary of the theoretical results is presented in [1].
متن کاملar X iv : h ep - e x / 04 11 06 5 v 2 2 6 Fe b 20 05 BELLE Belle Preprint 2004 - 34 KEK Preprint 2004 - 69 Observation of B + →
We report measurements of radiative B decays with Kηγ final states, using a data sample of 253 fb recorded at the Υ(4S) resonance with the Belle detector at the KEKB e+e− storage ring. We observe B+ → K+ηγ for the first time with a
متن کاملar X iv : h ep - p h / 06 02 06 6 v 1 7 Fe b 20 06 X ( 3872 ) in effective field theory
We consider the implications from the possibility that the recently observed state X(3872) is a meson-antimeson molecule. We write an effective Lagrangian consistent with the heavy-quark and chiral symmetries needed to describe X(3872) and study its properties.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2007