ABSTRACT
A search is made for charged Higgs bosons predicted by Two-Higgs-Doublet extensions of the Standard Model (2HDM) using electron-positron collision data collected by the OPAL experiment at [Formula: see text], corresponding to an integrated luminosity of approximately 600 pb-1. Charged Higgs bosons are assumed to be pair-produced and to decay into [Formula: see text], τντ or AW±. No signal is observed. Model-independent limits on the charged Higgs-boson production cross section are derived by combining these results with previous searches at lower energies. Under the assumption [Formula: see text], motivated by general 2HDM type II models, excluded areas on the [Formula: see text] plane are presented and charged Higgs bosons are excluded up to a mass of 76.3 GeV at 95 % confidence level, independent of the branching ratio BR(H±âτντ ). A scan of the 2HDM type I model parameter space is performed and limits on the Higgs-boson masses [Formula: see text] and mA are presented for different choices of tanß.
ABSTRACT
A case of bilateral, isolated, proximal musculocutaneous nerve palsy is reported. Initial physical and electromyographic examinations demonstrated complete denervation of the biceps brachii, brachialis, and coracobrachialis muscles bilaterally. Nerve conduction studies of the musculocutaneous nerves initially revealed no evoked potentials. The patient underwent resection with end-to-end anastomosis on the left and neurolysis without resection on the right. Significant functional recovery was noted bilaterally but was more rapid and complete on the side that underwent neurolysis without resection.
