Hadronic cross section of e+e− annihilation at bottomonium energy region

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

On the infrared sensitivity of the longitudinal cross section in ee annihilation

We have calculated the contributions proportional to β 0 α n+1 s to the longitudinal fragmentation function in ee annihilation to all orders of perturbation theory. We use this result to estimate higher-order perturbative corrections and nonperturbative corrections to the longitudinal cross section σL and discuss the prospects of determining αs from σL. The structure of infrared renormalons in ...

متن کامل

Study of ee annihilation at low energies

The recent results of the CMD-2, SND, KLOE, and BABAR experiments on ee annihilation into hadrons at low energies are reviewed.

متن کامل

p̄p low energy parameters from annihilation cross section data

Abstract. The recent experimental data obtained by the OBELIX group on total p̄p annihilation cross section are analysed; the low energy spin averaged parameters of the p̄p scattering amplitude (the imaginary parts of the S-wave scattering length and P-wave scattering volume) are extracted from the data. Their values are found to be equal to Imasc = −0.69±0.01(stat)±0.03(sys) fm, ImAsc = −0.76±0....

متن کامل

Total Hadronic Cross-Section of Photon-Photon Interactions at LEP

The total hadronic cross-section σγγ(W ) for the interaction of real photons, γγ → hadrons, is measured for γγ centre-of-mass energies 10 ≤ W ≤ 110 GeV. The cross-section is extracted from a measurement of the process ee → eeγγ → ee + hadrons, using a luminosity function for the photon flux together with form factors for extrapolating to real photons (Q = 0 GeV). The data were taken with the OP...

متن کامل

Measurement of the total cross section for hadronic production by e(+)e(-) annihilation at energies between 2.6-5 GeV

Using the upgraded Beijing Spectrometer, we have measured the total cross section for e(+)e(-) annihilation into hadronic final states at center-of-mass energies of 2.6, 3.2, 3.4, 3.55, 4.6, and 5.0 GeV. Values of R, sigma(e(+)e(-)-->hadrons)/sigma(e(+)e(-)-->&mgr;(+)&mgr;(-)), are determined.

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: Chinese Physics C

سال: 2020

ISSN: 1674-1137,2058-6132

DOI: 10.1088/1674-1137/44/8/083001