نتایج جستجو برای: cross section dependence
تعداد نتایج: 759052 فیلتر نتایج به سال:
We calculate next-to-next-to-leading order soft-gluon corrections to top quark total and differential cross sections in hadron colliders. We increase the accuracy of our previous estimates by including additional subleading terms, including next-to-next-to-next-toleading-logarithmic and some virtual terms. We show that the kinematics dependence of the cross section vanishes near threshold and i...
We discuss in detail the dependence of Gallium Anomaly on detection cross section. provide updated values size and find that its significance is larger than about $5\sigma$ for all section models. assumed value half life ${}^{71}\text{Ge}$, which determines sections transitions from ground state ${}^{71}\text{Ga}$ to ${}^{71}\text{Ge}$. show a ${}^{71}\text{Ge}$ standard one can reduce or even ...
We perform calculations for the production of φ mesons in nuclei at energies just above threshold and study the A dependence of the cross section. We use results for the φ selfenergy in the medium obtained within a chiral unitary approach. We find a strong A dependence which is tied to the distortion of the incident proton and to the absorption of the φ in its way out of the nucleus. The effect...
This paper proposes a novel Lasso-based approach to handle unobserved parameter heterogeneity and cross-section dependence in nonstationary panel models. In particular, penalized principal component (PPC) method is developed estimate group-specific long-run relationships common factors jointly identify the unknown group membership. The PPC estimators are shown be consistent under weakly depende...
The one photon absorption (OPA) cross section of a current carrying two-orbital quantum dot (QD) with strong electron-phonon interaction (polaron regime) is considered. Using the self-consistent non-equilibrium Hartree-Fock (HF) approximation, we determine the dependence of OPA cross section on the applied bias voltage, the strength of effective electron-electron interaction, and level spacing ...
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