Next-to-leading-logarithm threshold resummation for exclusive B meson decays

We extend the threshold resummation of the large logarithms $$\ln x$$ ln x which appear in factorization formulas for exclusive B meson decays, x being a spectator momentum fraction, to the next-to-leading-logarithm (NLL) accuracy. It is shown that the NLL resummation effect provides suppression in the end-point region with $$x\sim 0$$ x ∼ 0 stronger than the leading-logarithm (LL) one, and thus improves perturbative analyses of the above processes. We revisit the $$B\rightarrow K\pi $$ B → K π decays under the NLL resummation in the perturbative QCD approach, and find that it induces up to 20% variation of the direct CP asymmetries in various modes relative to the LL results. Our method to avoid the Landau singularity in the inverse Mellin transformation causes at most 10% theoretical uncertainty.

Scale and isolation sensitivity of diphoton distributions at the LHC

Precision measurements of diphoton distributions at the LHC display some tension with theory predictions, obtained at next-to-next-to-leading order (NNLO) in QCD. We revisit the theoretical uncertainties arising from the approximation of the experimental photon isolation by smooth-cone isolation, and from the choice of functional form for the renormalisation and factorisation scales. We find that the resulting variations are substantial overall, and enhanced in certain regions. We discuss the infrared sensitivity at the cone boundaries in cone-based isolation in related distributions. Finally, we compare predictions made with alternative choices of dynamical scale and isolation prescriptions to experimental data from ATLAS at 8 TeV, observing improved agreement. This contrasts with previous results, highlighting that scale choice and isolation prescription are potential sources of theoretical uncertainty that were previously underestimated.

Negation of Universalist Ontology as the Basis for the Conceptualization of the “Postmarxism” Concept

The article addresses the problem of etymological and theoretical uncertainty of the “postmarxism” concept, which is traced in both domestic and specialized Western studies. The basis for the formation of mental constructs, in the direction of clarifying the specifics of postmarxism, is its setting on “overcoming metaphysics”, which is expressed in an actual refusal to decode social phenomena / processes through the reference to their basic values. The study identifies the main theoretical and methodological contradictions in the understanding of postmarxism, and at the same time, in order to confirm the subject of the work, attention is paid to the avoidance of contradictions and oppositions by postmarxism itself. Because any opposition in postmarxism is questionable, it is a prerequisite for superstructure, which is meaningless itself. Also, a theoretical-comparative and semantic analysis of the "postmarxism” concept is conducted, the historical-political context of the evolution of the concept as a theoretical category and as self-identification is analyzed in order to define its position by some philosophers. The background to its formation is fundamental to explain the denial of universal ontology in postmarxism. Namely, they are decentralization, “breaking up” of structure, derriadian critique of the transcendental meaning, which in postmarxism is expressed as an artificial fixation of meaning and “ideological arrangement”.

KOTO vs. NA62 dark scalar searches

The two kaon factories, KOTO and NA62, are at the cutting edge of the intensity frontier, with an unprecedented numbers of long lived and charged Kaons, ∼ 1013, being measured and analyzed. These experiments have currently a unique opportunity to search for dark sectors. In this paper, we demonstrate that searches done at KOTO and NA62 are complementary, both probing uncharted territories. We consider two qualitatively different physics cases. In the first, we analyze models of axion-like-particles (ALP) which couple to gluons or electroweak gauge bosons. In the second, we introduce a model based on an approximate strange flavor symmetry that leads to a strong violation of the Grossman-Nir bound. For the first scenario, we design a new search strategy for the KOTO experiment, KL→ π0a → 4γ. Its expected sensitivity on the branching ratio is at the level of 10−9. This demonstrates the great potential of KOTO as a discovery machine. In addition, we revisit other bounds on ALPs from Kaon factories, highlighting the main sources of theoretical uncertainty, and collider experiments, and show new projections. For the second scenario, we show that the model may be compatible with the preliminary analysis of the KOTO-data that shows a hint for New Physics.

Ethnography and the Fate of Informal Culture: Rereading Paul Willis’ Learning to Labour

As the increasing discussion over social stratification and mobility indicates, the idea of “education changes destiny” has progressively been brought into question. In his classic study of British working-class boys from 1975, which is widely read in the fields of sociology, anthropology, and education, Paul Willis uncompromisingly revealed that liberal ideology about equal opportunity was only an empty promise and, more importantly, how the counter-cultural cognition and expression adopted the constraints of the structural conditions and at the same time leads to the reproduction of them. Despite the tragic mechanism behind the contradictory counter-culture, Willis remained optimistic about the radical potential in the symbolic works against dominant discourse. His in-depth ethnographic description didn’t only contribute to the endless theoretical debate about Structure and Process, but also provided a methodological approach encouraging extensive fieldwork, in which he believed the “theoretical uncertainty” lies. Ethnography can really “become the intellectual education of those who are governed,” if the scholars are willing to understand and communicate with the informal cultural groups and believe that their fate can be changed.

Pulsating white dwarfs and convection

Convection is a highly turbulent, three dimensional process that is traditionally treated using a simple, local, time independent description. Convection is one of the largest sources of theoretical uncertainty in stellar modeling. We outline recent progress in studies using pulsating white dwarfs to constrain convection and calibrate mixing length theory.

Post-globalization and new contours of the future Modernity

This article is intended to discuss the prospects and the ways of constructing a new model of global development in a situation of factual and theoretical uncertainty indicated in social and political science by the concept of post-globalization. It aims at analyzing the critical and theoretical potential of the concept of post-globalization for understanding the direction of shifting the paradigms of conceptualization of the social future. During the last two decades, the discourse of post-globalization exists as an alternative to the triumphant promotion of globalization as a neoliberal / neoconservative ideal for the world’s future in the context of the “end of history”. The post-globalization concept highlighting the limits of the globalization project serves as a possible heuristic tool for transcending its boundaries. But constructing the positive model of the social future requires a new set of concepts – new language – rooted in the driving forces of now-happening historical reality. This research helps to specify the direction of the further inquiry.