Ambiguities in the partial-wave analysis of pseudoscalar-meson photoproduction.

نویسندگان

  • Keaton
  • Workman
چکیده

Ambiguities in the partial-wave analysis of pseudoscalar-meson photoproduction Abstract Ambiguities in pseudoscalar-meson photoproduction, arising from incomplete experimental data, have analogs in pion-nucleon scattering. Amplitude ambiguities have important implications for the problems of amplitude extraction and resonance identification in partial-wave analysis. The effect of these ambiguities on observables is described. We compare our results with those found in earlier studies.

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

N ov 1 99 5 Amplitude ambiguities in pseudoscalar meson photoproduction

We consider the problem of determining amplitudes from observables for the case of pseudoscalar meson photoproduction. We find a number of surprisingly simple constraints which give necessary conditions for a complete set of measurements. These results contradict one of the selection rules derived previously. PACS Numbers: 13.60.Le, 13.88.+e

متن کامل

Negative Parity N ∗ Resonances in an Extended GBE

In this paper, we calculate the masses and mixing angles of L = 1 negative parity N ∗ resonances in an extended GBE (Goldstone-boson-exchange model) with harmonicoscillator wave functions. By using those mixing angles, we get their photoproduction amplitudes, and compare them with experimental data and the results of OPE (onepion-exchange model), OPsE (only pseudoscalar meson exchange model), a...

متن کامل

Photoproduction of η mesons off neutrons from a deuteron target

A formalism is developed for the partial wave analysis of data on meson photoproduction off deuterons and applied to photoproduction of η and π 0 mesons. Different interpretations of a dip-bump structure of the η photoproduction cross section in the 1670 MeV region are presented and discussed. Helicity amplitudes for two low-mass S11 states are determined.

متن کامل

Completeness Rules for Spin Observables in Pseudoscalar Meson Photoproduction

The number and type of measurements needed to ascertain the amplitudes for pseudoscalar meson photoproduction are analyzed in this paper. It is found that 8 carefully selected measurements can determine the four transversity amplitudes without discrete ambiguities. That number of measurements is one less than previously believed. We approach this problem in two distinct ways: (1) solving for th...

متن کامل

v 1 6 O ct 2 00 3 Production of Pseudoscalar Mesons

Experiments that study the hadronic and electromagnetic production of the pseudoscalar mesons – pions, etas and kaons, contribute to our knowledge of the properties of baryon and hyperon resonances. Fixed-target programs at hadronic facilities such as BNL-AGS have been phased out. However, the availability of modern experimental facilities with pseudo-monochromatic or tagged medium-energy photo...

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:
  • Physical review. C, Nuclear physics

دوره 54 3  شماره 

صفحات  -

تاریخ انتشار 1996