Probe of anomalous neutrino couplings to W and Z in medium energy setup of a beta-beam facility

Capability of medium energy setup of a beta beam experiment to probe new physics contributions to neutrino-W and neutrino-Z couplings are investigated. We employ the effective lagrangian approach of Buchmuller and Wyler and obtain 95% confidence level limits on neutrino couplings to these gauge bosons without assuming the flavor universality of the coupling of neutrinos. We show that a beta beam facility can place 3 to 20 times more restrictive limits than present ones on the deviations from the electron neutrino couplings in the Standard Model.Comment: 22 pages, 10 figure

Probe of unparticles at the LHC in exclusive two lepton and two photon production via photon-photon fusion

The exclusive production pp->pXp is known to be one of the most clean channels at the LHC. We investigate the potential of processes pp -> p l-l+ p and pp-> p gamma gamma p to probe scalar and tensor unparticles by considering three different forward detector acceptances; 0.0015<xi<0.15, 0.0015<xi<0.5 and 0.1<xi<0.5. We obtain 95% confidence level sensitivity limits on the unparticle couplings for various integrated luminosities.Comment: 27 pages, 17 figure

Do analysts understand accruals’ persistence? Evidence revisited

We revisit the question of whether analysts anticipate accruals’ predicted reversals (or persistence) of future earnings. Prior evidence shows that analysts are over optimistic with respect to working capital (WC) accruals which is interpreted as their inability to understand accruals’ persistence. Using total accruals (TACC) that in addition to WC accruals cover non-current operating and financing accruals, we show that analysts’ forecast errors are uncorrelated with accruals. We show that analysts’ optimism with respect to accruals is due to the use of an incomplete accrual measure, which does not necessarily indicate analysts’ lack of sophistication. Our results imply that traditional accrual definition should be revised in future studies. The main implication of our finding is that analysts seem to exhibit the necessary sophistication in understanding accruals persistence contrary to suggestions in prior research. Our findings are in line with the idea that any anomalous stock price behaviour related to accruals is not due to analysts’ forecasts, i.e., analysts' earnings forecasts and recommendations should not be considered as the originating source of stock price underreaction or overreaction with respect to accruals