منابع مشابه
Rescattering Effects and Two-step Process in Kaon Photoproduction on the Deuteron
Kaon photoproduction on the deuteron is investigated by considering Y N and KN rescattering and the two-step process γd → πN N → KY N. A strong enhancement in the total cross section is found from the two-step process. Y N rescattering has remarkable effects in the inclusive and exclusive cross section, while the effect of KN rescattering is much less important.
متن کاملTwo-step synthesis of carbohydrates by selective aldol reactions.
Studies of carbohydrates have been hampered by the lack of chemical strategies for the expeditious construction and coupling of differentially protected monosaccharides. Here, a synthetic route based on aldol coupling of three aldehydes is presented for the de novo production of polyol differentiated hexoses in only two chemical steps. The dimerization of alpha-oxyaldehydes, catalyzed by l-prol...
متن کاملMultiplex gene removal by two-step polymerase chain reactions.
Precise DNA manipulation is critical for molecular biotechnology. Restriction enzyme-based approaches are limited by their requirement of specific enzyme sites. Restriction-free cloning has greatly improved the flexibility and speed of precise DNA assembly. Most of these approaches focus on DNA assembly rather than gene removal. Here we present a polymerase chain reaction (PCR)-based cloning me...
متن کاملPion Rescattering in Two-Pion Decay of Heavy Quarkonia
The role of pion rescattering in ππ decay of radially excited heavy quarkonia modeled in terms of a Qππ coupling, is investigated within the framework of the covariant Blankenbecler-Sugar equation. The effects of pion rescattering (or pion exchange) are shown to be large, unless the coupling of the two-pion system to the heavy quarks is mediated by a fairly light scalar σ meson, which couples t...
متن کاملPion Rescattering in Nuclei
Nuclear corrections are presented for neutrino and electron induced reactions in a pedagogical manner. The formalism is demonstrated with numerical studies and is shown to produce substantial corrections in channels where the pions have the same charge with the exchanged current. Two comparisons with available data show consistency of the model. Additional experimental results along these lines...
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: The European Physical Journal A
سال: 2005
ISSN: 1434-6001,1434-601X
DOI: 10.1140/epjad/s2005-05-015-9