Swiss central bank under scrutiny after franc shock

By Alice Baghdjian and Katharina Bart ZURICH (Reuters) - Six weeks after a fateful decision that blasted its currency skywards, Switzerland's central bank is coming under intense scrutiny, with critics calling for changes to its insular policy practices and century-old ownership structure. The shock of the Jan. 15 move by the Swiss National Bank (SNB) to abandon the franc's three-year-old cap against the euro is still reverberating, with politicians stepping up their criticism as the e