Four-fermion heavy quark operators and light current amplitudes in heavy flavor hadrons

We introduce and study the properties of the "color-straight" four-quark operators containing heavy and light quark fields. They are of the form (\bar b\Gamma_b b)(\bar q\Gamma_q q) where both brackets are color singlets. Their expectation values include the bulk of the nonfactorizable contributions to the nonleptonic decay widths of heavy hadrons. The expectation values of the color-straight operators in the heavy hadrons are related to the momentum integrals of the elastic light-quark formfactors of the respective heavy hadron. We calculate the asymptotic behavior of the light-current formfactors of heavy hadrons and show that the actual decrease is 1/(q^2)^3/2 rather than 1/q^4. The two-loop hybrid anomalous dimensions of the four-quark operators and their mixing (absent in the first loop) are obtained. Using plausible models for the elastic formfactors, we estimate the expectation values of the color-straight operators in the heavy mesons and baryons. Improved estimates will be possible in the future with new data on the radiative decays of heavy hadrons. We give the Wilson coefficients of the four-fermion operators in the 1/m_b expansion of the inclusive widths and discuss the numerical predictions. Estimates of the nonfactorizable expectation values are given.Comment: 51 pages. The case of flavor-singlet operators is added for the two-loop anomalous dimension

The ritually disturbed burials of Yakuts (XVII–XVIII сenturies)

Basing on the analysis of the archaeological data on medieval burials of Yakuts we raise the problems of interpretation of graves with traces of an ancient ritual penetration and violation of burial structures and of anatomical integrity of the skeletons of the buried, using ethnographic and folklore data. We give a generalized description of the main types of disturbed graves of the late Middle Ages of Yakutia: secondary burial, embalming, rendering a dangerous dead harmless, desecration, robbery, etc. We provide historical and comparative data from the ancient and medieval cultures of Central Asia, Southern Siberia and the Far East. We examine philosophical ideas about the afterlife, ritual actions of Yakuts against «dangerous» dead and sacred people

Comprehensive study of the early Yakut Sergelyakh burial of the XV — beginning of the XVI centuries

The paper presents a comprehensive study of graves which relate to rare burial sites of the early stage of ethnic history of the Yakuts. The burial belongs to an equestrian warrior. It is confirmed by the findings of the horse harness and fragments of weapons, including a part of a Central Asian composite bow which is unique to the Yakuts, arrowheads and a blade of palma (Siberian pole weapon). The vertebral pathologies and morphological features of femurs also point at riding as a usual way of transportation. Multiple injuries of bones indicate to an aggressive lifestyle. The death of the man was caused by a penetrating injury of the head with a bladed weapon. Craniological characteristics of the man correspond to the South Siberian populations characterized by a combination of Caucasoid and Mongoloid features. In this case, the latter prevails. The ritual funerary complexes correspond to the Ust-Talkin culture, which alongside with cranial features of the man enable us to associate Sergelyakh burial with Turkic part of the Sakha people, which is epically correlated with the legendary Elley Bootur

The woman’s burial of Atlasovskoe-2 of the xvii century in Central Yakutia: results of a complex research

This article presents a complex study of the female burial of the XVII century in Central Yakutia. The burial rite (traces of ritual roasting of the coffin, orientation to the North) and composition of the accompanying inventory (a knife of the non-Yakut origin, a sphero-conical top part of a headdress with a support for a plume, twin overlaid decorative details of the headdress’s crown, a composite pectoral panel picture of sewn-on patches, an earring in the form of a question mark with a biconical bead) determine the peculiarity of the burial, and their nearest parallels can be traced to the Medieval cultures of the Eurasian steppe and forest-steppe nomads, as well as to the population of the Siberian forest and tundra zones of the XVI–XIX centuries. Craniological characteristics of the buried woman draw her closer to the populations of Central Asian and Baikal anthropological types of the North Asian formation