Supersymmetric QCD corrections to e+e−→tbˉH−e^+e^-\to t\bar{b}H^- and the Bernstein-Tkachov method of loop integration

The discovery of charged Higgs bosons is of particular importance, since their existence is predicted by supersymmetry and they are absent in the Standard Model (SM). If the charged Higgs bosons are too heavy to be produced in pairs at future linear colliders, single production associated with a top and a bottom quark is enhanced in parts of the parameter space. We present the next-to-leading-order calculation in supersymmetric QCD within the minimal supersymmetric SM (MSSM), completing a previous calculation of the SM-QCD corrections. In addition to the usual approach to perform the loop integration analytically, we apply a numerical approach based on the Bernstein-Tkachov theorem. In this framework, we avoid some of the generic problems connected with the analytical method.Comment: 14 pages, 6 figures, accepted for publication in Phys. Rev.

Non-Hodgkin's lymphoma-associated pleural effusion misdiagnosed as tubercular pleural effusion

Adenosine deaminase (ADA) in the pleural fluid has high sensitivity and specificity for diagnosing tubercular pleuritis. ADA level of more than 40 IU/L in a lymphocytic and exudative effusion is suggestive of tubercular etiology in clinical practice. Antitubercular chemotherapy is often instituted without further histopathological or microbiological confirmation, especially in tuberculosis (TB)-endemic countries. Lymphoma is another important cause of elevated ADA levels in pleural fluid. Hence, in the absence of tissue diagnosis, lymphoma is often wrongly labeled as TB based on fluid characteristics. Here, we present a case of non-Hodgkin lymphoma with right-side pleural effusion who was initially misdiagnosed to have TB based on pleural fluid analysis

Ruptured pulmonary hydatid cyst

A 37-year-old male presented with left-sided hydropneumothorax. After drainage of fluid and air from the pleural cavity, chest radiograph and computed tomography of chest showed characteristic radiological image of ruptured hydatid cyst. The diagnosis was supported by positive echinococcal serology