Electromagnetic corrections for the analysis of low energy π−p scattering data

نویسنده

  • A. Gashi
چکیده

We calculate the electromagnetic corrections to the isospin invariant mixing angle and to the two eigenphases for the s-, p1/2and p3/2-partial waves for π −p elastic and charge exchange scattering. These corrections have to be applied to the nuclear quantities in order to obtain the two hadronic phase shifts for each partial wave. The calculation uses relativised Schrödinger equations containing the sum of an electromagnetic potential and an effective hadronic potential. The mass differences between π− and π0 and between p and n are taken into account. We compare our results with those of previous calculations and estimate the uncertainties in the corrections. PACS: 13.75.Gx,25.80.Dj

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

F - 13288 Marseille – Cedex 9 Electromagnetic Corrections to Low - Energy π − π Scattering †

Electromagnetic corrections to the low-energy π+π− → π0π0 scattering amplitude at next-to-leading order in the chiral expansion are reviewed. Their effects on the corresponding scattering lengths are estimated and compared to the two-loop strong interaction contributions. Key-Words: Chiral perturbation theory, Pion, Electromagnetic corrections. Contribution to the Eighth International Symposium...

متن کامل

New light on electromagnetic corrections to the scattering parameters obtained from experiments on pionium

We calculate the electromagnetic corrections needed to obtain isospin invariant hadronic pion-pion s-wave scattering lengths a, a from the elements acc, a0c of the s-wave scattering matrix for the (π+π−, ππ) system at the π+π− threshold. The latter can be extracted from experiments on the π+π− atom (pionium). Our calculation uses energy independent hadronic pion-pion potentials V , V 2 that sat...

متن کامل

Electromagnetic corrections to the hadronic phase shifts in low energy πp elastic scattering

We calculate for the s-, p1/2and p3/2-waves the electromagnetic corrections which must be subtracted from the nuclear phase shifts obtained from the analysis of low energy πp elastic scattering data, in order to obtain hadronic phase shifts. The calculation uses relativised Schrödinger equations containing the sum of an electromagnetic potential and an effective hadronic potential. We compare o...

متن کامل

Determination of the s-wave pion-nucleon threshold scattering parameters from the results of experiments on pionic hydrogen

We give the conversion equations which lead from experimental values of the 3p → 1s transition energy in pionic hydrogen and the total width of the 1s level to values of the s-wave threshold scattering parameters for the processes π−p → π−p and π−p → πn respectively. Using a three-channel potential model, we then calculate the electromagnetic corrections to these quantities, which remove the ef...

متن کامل

Phase shift analysis of low energy π±p scattering data and a comparison with pionic hydrogen data

Using newly calculated electromagnetic corrections [1], [2], we have made a phase shift analysis of the experimental data on πp elastic scattering up to a pion laboratory kinetic energy of 100 MeV. The effective hadronic interaction was assumed to be isospin invariant. The output consists of six hadronic phase shifts in parametrised form: the s-, p1/2and p3/2-waves for total isospin 3/2 and 1/2...

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 1999