Squark production in R-symmetric SUSY with Dirac gluinos: NLO corrections

R-symmetry leads to a distinct realisation of SUSY with a significantly modified coloured sector featuring a Dirac gluino and a scalar colour octet (sgluon). We present the impact of R-symmetry on squark production at the 13 TeV LHC. We study the total cross sections and their NLO corrections from all strongly interacting states, their dependence on the Dirac gluino mass and sgluon mass as well as their systematics for selected benchmark points. We find that tree-level cross sections in the R-symmetric model are reduced compared to the MSSM but the NLO K-factors are generally larger in the order of ten to twenty per cent. In the course of this work we derive the required DREG $\to$ DRED transition counterterms and necessary on-shell renormalisation constants. The real corrections are treated using FKS subtraction, with results cross checked against an independent calculation employing the two cut phase space slicing method.Comment: 46 pages, 15 figures; updated to match published versio

Two-loop correction to the Higgs boson mass in the MRSSM

We present the impact of two-loop corrections on the mass of the lightest Higgs boson in the Minimal R-symmetric Supersymmetric Standard Model (MRSSM). These shift the Higgs boson mass up by typically 5 GeV or more. The dominant corrections arise from strong interactions, from the gluon and its N=2 superpartners, the sgluon and Dirac gluino, and these corrections further increase with large Dirac gluino mass. The two-loop contributions governed purely by Yukawa couplings and the MRSSM $\lambda,\Lambda$ parameters are smaller. We also update an earlier analysis [Diessner:2014ksa], which showed that the MRSSM can accommodate the measured Higgs and W boson masses. Including the two-loop corrections increases the parameter space where the theory prediction agrees with the measurement.Comment: To be submitted to "Supersymmetry beyond the NMSSM", Advances in High Energy Physic

Higgs boson mass and electroweak observables in the MRSSM

R-symmetry is a fundamental symmetry which can solve the SUSY flavor problem and relax the search limits on SUSY masses. Here we provide a complete next-to-leading order computation and discussion of the lightest Higgs boson mass, the W boson mass and muon decay in the minimal R-symmetric SUSY model (MRSSM). This model contains non-MSSM particles including a Higgs triplet, Dirac gauginos and higgsinos, and leads to significant new tree-level and one-loop contributions to these observables. We show that the model can accommodate the measured values of the observables for interesting regions of parameter space with stop masses of order 1 TeV in spite of the absence of stop mixing. We characterize these regions and provide typical benchmark points, which are also checked against further experimental constraints. A detailed exposition of the model, its mass matrices and its Feynman rules relevant for computations in this paper is also provided.Comment: added references, matches the published versio

Anaplastic thyroid cancer with life-threatening symptoms in an older female - a case report

Introduction: Anaplastic thyroid cancer, also called undifferentiated, is an uncommon and highly aggressive thyroid neoplasm that usually occurs in patients above 60 years of age (mean 65 years). Incidence is about 1-2 cases per million persons a year. [11] It accounts for 1-2% of thyroid cancer cases and probably develops from previously differentiated thyroid neoplasms. [1] Mutations of TP53 gene are most common and exist in 17-80% of patients. Other frequently mutated genes are RAS, BRAF and β-catenin. [3] The metastatic spread tends to occur through hematogenous and lymphatic pathways. The neoplasm presents as a rapidly enlarging neck mass that can cause compression on the neck structures giving symptoms such as dysphagia and dyspnea. Patients with established diagnosis of anaplastic thyroid cancer have very poor prognosis. Mean survival time of patients after confirmed diagnosis is 3 to 6 months and 5-year survival rate is estimated to be 5-14%. [2] Aim: The aim of this study is to portray the clinical presentation, course and complications of a patient suffering from anaplastic thyroid cancer. This case report includes performed procedures and implemented treatment. Description of the case: We present a case of an 87-year-old female that was admitted to the hospital with a large thyroid mass, symptoms of dysphagia, dyspnea and significant weight loss. Clinical picture was suspicious of anaplastic thyroid cancer. Further workup included laboratory testing, imaging and FNA biopsy. Surgical procedure of tracheostomy was conducted due to life-threatening dyspnea with consecutive patient’s monitoring in Intensive Care Unit. After achieving clinically stable state the patient was transferred to Clinical Department of Radiotherapy where palliative radiotherapy was initiated

Gastrointestinal tract carcinoid with carcinoid syndrome in 63-year-old diver – a case report

Introduction: Carcinoid is a tumor that originates from neuroendocrine cells.[1] It was primarily named and described in 1907 by Siegfried Oberndorfer to characterize neoplasms located in GIST with a relatively indolent course.[2] Term “carcinoid” is now used to describe. neuroendocrine neoplasms, a subset of rare tumors, mostly sporadic, which are typically located in gastrointestinal tract but they may also appear beyond it (e.g. in thymus or lungs).[2,3] NET’s are highly differentiated and usually hormonally active. Biochemical proof of their presence can consist of a measurement of the released substances – serotonin, bradykinin, histamine, etc. [3]Carcinoid tumors derive from serotonin-producing enterochromaffin cells.[1] They contain high quantities of tryptophane that is transformed later into serotonin. This biogenic amine is responsible for occurrence of so called- carcinoid syndrome. It manifests with hot flushes, diarrhea, tachycardia, vertigo and excessive sweating.[3] The attacks usually last from 0,5 minutes up to half an hour and they can be triggered by food or alcohol consumption, liver palpation or general anesthesia. Due to excessive serotonin production, long lasting carcinoid might lead to right endocardial fibrosis with tricuspid valve and pulmonary valve dysfunction. [4] Description of the case: The following case describes the clinical history, diagnostic process, imaging studies and treatment applied to 63-year-old male professional diver who was admitted to University Hospital of Zielona Góra with a clinical picture that resembled carcinoid syndrome. The final diagnosis- carcinoid originating from the ileum- was settled after performing multiple studies. The patient was referred to the department of Endocrinology and Neuroendocrine Tumors in Silesian University Center in Katowice. He initiated therapy with Somatuline Autogel. The Tumor Board was conducted in order to determine the optimal treatment for the patient

The investigation of the Bayesian rough set model

AbstractThe original Rough Set model is concerned primarily with algebraic properties of approximately defined sets. The Variable Precision Rough Set (VPRS) model extends the basic rough set theory to incorporate probabilistic information. The article presents a non-parametric modification of the VPRS model called the Bayesian Rough Set (BRS) model, where the set approximations are defined by using the prior probability as a reference. Mathematical properties of BRS are investigated. It is shown that the quality of BRS models can be evaluated using probabilistic gain function, which is suitable for identification and elimination of redundant attributes

The investigation of the Bayesian rough set model

AbstractThe original Rough Set model is concerned primarily with algebraic properties of approximately defined sets. The Variable Precision Rough Set (VPRS) model extends the basic rough set theory to incorporate probabilistic information. The article presents a non-parametric modification of the VPRS model called the Bayesian Rough Set (BRS) model, where the set approximations are defined by using the prior probability as a reference. Mathematical properties of BRS are investigated. It is shown that the quality of BRS models can be evaluated using probabilistic gain function, which is suitable for identification and elimination of redundant attributes

SAMPLE ALLOCATION IN ESTIMATION OF PROPORTION IN A FINITE POPULATION DIVIDED AMONG TWO STRATA

The problem of estimating a proportion of objects with a particular attribute in a finite population is considered. The classical estimator is compared with the estimator, which uses the information that the population is divided among two strata. Theoretical results are illustrated with a numerical example