πNNCoupling from High PrecisionnpCharge Exchange at 162 MeV
نویسندگان
چکیده
منابع مشابه
Comment on “ πNN Coupling from High Precision np Charge Exchange at 162 MeV ”
In this updated and expanded version of our delayed Comment we show that the np backward cross section, as presented by the Uppsala group[1], is seriously flawed (more than 25 sd.). The main reason is the incorrect normalization of the data. We also show that their extrapolation method, used to determine the charged πNN coupling constant, is a factor of about 10 less accurate than claimed by Er...
متن کاملREACTION AT 198 MeV
The reaction 45Sc(n, P)45Ca has been studied at an energy of 198 MeV with energy resolution of about 1 MeV. Measurements were carried out at nominal angles 0°, 3°, 6®, 9®, 12°, 15°, 18" and spectra obtained up to -40 MeV excitation energy in 45Ca . Significant Gamow-Teller strength is observed at an excitation energy of about 7 MeV, somewhat higher than predicted by shell-model calculations . T...
متن کاملDifferential cross sections for pion charge exchange on the proton at 27 . 5 MeV
We have measured pion single charge exchange differential cross sections on the proton at 27.5 MeV incident π kinetic energy in the center of momentum angular range between 0 and 55. The extracted cross sections are compared with predictions of the standard pion-nucleon partial wave analysis and found to be in excellent agreement. Typeset using REVTEX
متن کاملNonthermal Flare Emission from MeV - energy Electrons at
We present analyses of two solar ares observed with high spatial resolution at 86 GHz with the BIMA millimeter{wavelength telescope and at 17 and 34 GHz with the Nobeyama radioheliograph. In both events there is evidence for a simple bipolar structure in the radio source: in one case two distinct sources are clearly spatially resolved, while in the second the polarization image at 17 GHz sugges...
متن کاملNeutron-induced deuteron production from light nuclei at 800 MeV
The deuteron sepctra from {n,d) reactions at 800 MeV near 0' are characterized by a high energy quasielastic scattering peak, and at lower momentum, a quasifree scattering peak. The ratio of the quasifree to quasielastic cross sections is approximately 10:1.Both cross sections exhibit an A '" mass dependence over the range of target nuclei studied. Comparisons are made with corresponding proton...
متن کاملذخیره 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 Letters
سال: 1995
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.75.1046