1 Hyperon photo - and electroproduction at CLAS

نویسنده

  • K. Hicks
چکیده

(Received: February 7, 2008) The large acceptance and high multiplicity capabilities of the CLAS detector make it possible to study a wide range of previously unmeasured strange baryon production processes. Studies of the decay angular distributions of electroproduced strange baryons have yielded several interesting new results. The Λ(1520) electroproduction decay angular distributions shed light on the spin projections of the Λ(1520). Analysis of the decay angular distributions of the weakly decaying Λ(1116) have revealed the induced baryon polarization due to unpolarized incident electron beams. In addition to these topics, other features of the CLAS strange baryon program, such as photoproduction and virtual photon L-T decompositions, are also briefly summarized.

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

ar X iv : h ep - p h / 02 12 25 6 v 1 1 7 D ec 2 00 2 η , η ′ photo - and electroproduction off nucleons

The photo-and electroproduction of the η, η ′ mesons on nucleons are investigated within a relativistic chiral unitary approach based on coupled channels. The s-wave potentials for electroproduction and meson-baryon scattering are derived from a chiral effective Lagrangian which includes the η ′ as an explicit degree of freedom and incorporates important features of the underlying QCD Lagrangia...

متن کامل

ar X iv : h ep - p h / 04 02 29 3 v 1 2 7 Fe b 20 04 η , η ′ photoproduction and electroproduction off protons

Photo-and electroproduction of η, η ′ mesons on protons are investigated within a relativistic chiral unitary approach based on coupled channels. The s wave potentials for electroproduction and meson-baryon scattering are derived from a chiral effective Lagrangian which includes the η ′ as an explicit degree of freedom and incorporates important features of the underlying QCD Lagrangian such as...

متن کامل

Multipole approach for photo - and electroproduction of kaon

We have analyzed the experimental data on K + Λ photoproduction by using a multipole approach. In this analysis we use the background amplitudes constructed from appropriate Feynman diagrams in a gauge-invariant and crossing-symmetric fashion. Results of our analysis reveal the problem of mutual consistency between the new SAPHIR and CLAS data. We found that the problem could lead to different ...

متن کامل

Electroproduction of K mesons at CLAS

Quark models predict baryon resonances [1] that have not yet been observed via strong interactions. These resonances could be detected via electroand photoproduction of strange mesons. Of special interest are the nucleon resonances N which some of them could couple strongly to KΛ and KΣ [2]. Moreover, higher mass nucleon resonances could favor decaying into KΣ, near threshold. Using a quark-pai...

متن کامل

Electromagnetic Production of Kaons on the Nucleon

Kaon photo-and electroproduction in all six isospin channels are investigated by means of an isobaric model. It is found that existing models can only partially describe the current experimental data. Moreover, the extracted coupling constants are mostly inconsistent with the prediction of SU(3) symmetry or the information from hadronic reactions. In order to further analyze this problem, we in...

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 2001