Particle theory

Abstract:

Since the recent detection of an astrophysical flux of high-energy neutrinos, the question of its origin has not yet fully been answered. Much of what is known about this flux comes from a small event sample of high neutrino purity, good energy resolution, but large angular uncertainties. In searches for point-like sources, on the other hand, the best performance is given by using large statistics and good angular reconstructions. Track-like muon events produced in neutrino interactions satisfy these requirements. We present here the results of searches for point-like sources with neutrinos using data acquired by the IceCube detector over 7 yr from 2008 to 2015. The discovery potential of the analysis in the northern sky is now significantly below E 2 v doφ/dE v = 10 -12 TeV cm -2 s -1 , on average 38% lower than the sensitivity of the previously published analysis of 4 yr exposure. No significant clustering of neutrinos above background expectation was observed, and implications for prominent neutrino source candidates are discussed.

Abstract:

We present up-to-date Standard Model theory predictions for the Higgs transverse-momentum (pâŠ1) distribution. In the region of intermediate values of transverse momenta we present the NNLL+NLO QCD predictions including both top and bottom quark contributions. At very large pâŠ1 2mtwe show the next-to-leading order QCD corrections to the production of the Higgs boson at the LHC.

Abstract:

We present a general method for computing Hodge numbers for Calabi-Yau manifolds realised as discrete quotients of complete intersections in products of projective spaces. The method relies on the computation of equivariant cohomologies and is illustrated for several explicit examples. In this way, we compute the Hodge numbers for all discrete quotients obtained in Braun’s classification.