Download or read book Search for Multi-photon Signatures of a Higgs Boson in Ppbar Collisions at Sqrt(s) written by Oleksiy Vladimirovich Atramentov and published by . This book was released on 2006 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have performed a search for a fermiophobic Higgs boson in tri-photon events. The study has been performed on 0.83 fb-1 of data collected with the DZero detector at the Tevatron collider, the world's highest energy accelerator. The study was motivated by the recent phenomenological study that suggests that at presently attained energies and statistics new Higgs production mechanisms become experimentally accessible. All backgrounds were estimated from the data in a self consistent manner. We observed zero tri-photon events and expected 0.5 +/-0.2 from the Standard Model processes. Therefore, we set 95% CL upper limit on the higgs production cross-section which is 25.3 fb-1. This is the most stringent limit on the considered class of models today.