Baryon quadrupole moment in the 1/Nc expansion of QCD

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Magnetic moment of ∆ baryon in QCD string approach

Magnetic moments (m.m.) of the ∆++ baryons is computed within the new approach based on the QCD string Hamiltonian. The string tension σ is only dimensionful quantity forming m.m. of both nucleon and ∆++, but color Coulomb and spin-spin interactions cancel each other in nucleon m.m. while in ∆++ they add coherently. The result μ∆++ = 4.36μN is in good agreement with experimental data. Recently ...

متن کامل

Intrinsic quadrupole moment of the nucleon

We address the question of the intrinsic quadrupole moment Q0 of the nucleon in various models. All models give a positive intrinsic quadrupole moment for the proton. This corresponds to a prolate deformation. We also calculate the intrinsic quadrupole moment of the ∆(1232). All our models lead to a negative intrinsic quadrupole moment of the ∆ corresponding to an oblate deformation. PACS numbe...

متن کامل

Baryon Axial Currents in QCD

We prove that the 1/Nc corrections to the baryon axial current matrix elements are proportional to their lowest order values. This implies that the first correction to axial current coupling constant ratios vanishes, and that the SU(2Nf ) spin-flavor symmetry relations are only violated at second order in 1/Nc. UCSD/PTH 93-18 hep-ph/9307242 July 1993

متن کامل

Baryon Spectroscopy in Lattice QCD

We review recent developments in the study of excited baryon spectroscopy in lattice QCD. After introducing the basic methods used to extract masses from correlation functions, we discuss various interpolating fields and lattice actions commonly used in the literature. We present a survey of results of recent calculations of excited baryons in quenched QCD, and outline possible future direction...

متن کامل

Baryon Form Factors in QCD

The form factors of baryons have long been studied in electron scattering, and now we are here to discuss new opportunities that can come from an e+e− collider at moderate energies where exclusive cross sections may be measured. One can foresee measurements of the form factors of baryons in the timelike region. The richness of these measurements should be clear. We can in principle measure the ...

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

ژورنال

عنوان ژورنال: Physical Review D

سال: 2020

ISSN: 2470-0010,2470-0029

DOI: 10.1103/physrevd.101.074018