Filetype
We discuss the vector meson masses within the context of chiral perturbation theory performing an expansion in terms of the momenta, quark masses and 1/Nc. We extend the previous analysis to include isospin breaking effects and also include up to order p4. We discuss vector meson chiral perturbation theory in some detail and present a derivation from a relativistic Lagrangian. The unknown coeffici
A brief pedagogical introduction to correlation femtoscopy is given. We then focus on the shape of the correlation function and discuss the possible reasons for its departure from the Gaussian form and better reproduction with a Lévy stable distribution. With the help of Monte Carlo simulations based on asymmetric extension of the Blast-Wave model with resonances we demonstrate possible influence
The branching ratio of the K+→π+e+e-e+e- (K+→π+4e) decay is calculated at leading order in the Standard Model. The dominance of the neutral-pion pole determines the overall branching ratio to be B(K+→π+4e)=B(K+→π+π0)B(π0→4e)≈7.0(3)×10-6. The significance of this contribution is very much concentrated in the context of the whole available phase space, throughout most of which the one-photon-exchang
We calculate the decay eta to3 pi at next-to-next-to-leading order or order p6 in Chiral Perturbation Theory. The corrections are somewhat larger than was indicated by dispersive estimates. We present numerical results for the Dalitz plot parameters, the ratio r of the neutral to charged decay and the total decay rate. In addition we derive an inequality between the slope parameters of
The correlation function measured in ultrarelativistic nuclear collisions is strongly non-Gaussian. Using two different models we study which effects can influence its shape and how much. In particular, we focus on the parametrizations expressed with the help of Lévy-stable distributions. We show that the Lévy index may deviate substantially from 2 due to non-critical effects such as resonance dec
I uppsatsen har gällande rätt avseende utomståenderegeln i 57 kap. 5 § IL fram-ställts och analyserats. Utomståenderegeln är en undantagsregel från de särskilda beskattningsreglerna i 3:12-regelverket. Bestämmelsen blir tillämplig om aktie-ägaren visar att utomstående i betydande omfattning äger del i företaget. Syftet med uppsatsen har varit att undersöka om tillämpningen av bestämmelsen är ändamThis bachelor thesis deals with the outsider rule in 57:5 Swedish income tax law (IL). The outsider rule is an exemption clause, and if found applicable the general taxation rules will be applied instead of the special close company rules. The out-sider rule will be applicable if the shareholder shows that outsiders own a signifi-cant amount of the company's shares. The purpose of this thesis
Denna studie syftar till att undersöka hur den visuella kommunikationen i dagens samhälle kan användas som ett strategiskt kommunikativt verktyg. Mer specifikt ämnar undersökningen att bidra med djupare kunskap kring hur unga kvinnors kroppsaktivistiska stillbilder från Instagram kan tolkas i relation till blick-teori samt om dessa bilders visuella kommunikation kan bidra till att motarbeta den maThis study aims to investigate how visual communication in today´s society can be used as as a strategic communicative tool. More specifically, the study aims to contribute with deeper knowledge of how young women's body activist still images from Instagram can be interpreted in relation to gaze theory, and whether their visual communication can contribute to counteracting the male gaze's
Ecoist AB utvecklar en prototyp till en trehjulig elbil för två personer. Två komponenter till fordonet har undersökts: den övre bärarmen i den främre hjulupphängningen och en bussning som sitter i denna bärarm. Målet med examensarbetet har varit att se om det finns några funktionella eller ekonomiska fördelar med att tillverka dessa genom 3D-printing. Olika sätt att framställa komponenterna har u
Att undersöka stjärnor i infrarött är en relativt ny företeelse till skillnad från optisk astronomi (dvs. synligt ljus). Det var först på 60-talet med teleskopet Stratoscope II som man lyckades få spektra från stjärnor i infrarött (våglängder på runt 3 m), och upptäckte förekomsten av vatten i kalla röda jättar. Den bakomliggade problematiken till varför modern infraröd astronomi är så ungt är våThe advent of infrared astronomy, unlike optical astronomy that was developed over centuries, was delayed until the space age due to our own atmosphere acting as an efficient shield towards this radiation. With a lot of molecules (including water) emitting in the infrared region, it was first in the late 1990s that water no longer was deemed special and was observed in many cooler (K-M) giant star
Lunds Civila Ryttarförening, LCR, is one of Sweden’s largest equestrian clubs with its facilities located in between Norra Fäladen to the north and LTH to the south. To the west of the horse facilities is “Smörlyckans Idrottsplats” with football pitches, tennis courts, a Jujutsu club and a Home Guard’s building. The club has approximately 500 weekly riders and offers a wide range of activities wit
Repetitive DNA is quantitatively the main component of telomeres and centromeres, structures responsible for maintenance of the eukaryotic chromosome. The telomere is the specialized nucleoprotein complex that terminates linear chromosomes. In most species the DNA component consists of short repeats which are generated by the enzyme complex telomerase. However, there are important exceptions such
Using kilometric arrays of air Cherenkov telescopes at short wavelengths, intensity interferometry may increase the spatial resolution achieved in optical astronomy by an order of magnitude, enabling images of rapidly rotating hot stars with structures in their circumstellar disks and winds, or mapping out patterns of nonradial pulsations across stellar surfaces. Intensity interferometry (once pio
När en utredare observerar en olycksplats är bevisen de kan hitta viktiga. Bevisen är det som gör att de kan återskapa hur olyckan hände och förstå vad som hände. Men om de inte förstår bevisen, eller använder dom för att återskapa olycksplatsen på fel sätt, kan svaret de får vara fel. Inom partikelfysik kolliderar vi atomkärnor med extrema energier för att se vilka hemligheter universum har. För The purpose of this thesis was to implement an alternative method to calculate the overlap function, which describe to what extent two protons overlap with each other spatially, into PYTHIA8 in order to determine how it affected the average number of multiparton interactions. The new overlap function is based on an explicit impact parameter picture, whereas PYTHIA8s overlap function uses an implic
The purpose of this essay was to illustrate privatisation of health care from various outlooks. I illustrated the effects of privatisation from the perspective of users and employees. At the same time I analysed which possibilities and possible risks, related to privatisation, can be found. The following questions have been the basis of the essay: What is meant by privatisation of health care in S
Context. Elements heavier than Li are produced in the interiors of stars. However, for many elements the exact production sites and the timescales on which they are dispersed into the interstellar medium are unknown. Having a clear picture on the origins of the elements is important for our ability to trace and understand the formation and chemical evolution of the Milky Way and its stellar popula
https://www.iac.lu.se/interview-felicita-brusoni - 2026-05-23
