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Updates from ICHEP: 750 GeV bump (and other things we didn’t find)

9 Aug 2016, 08:33 UTC
Updates from ICHEP: 750 GeV bump (and other things we didn’t find)
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Article: Search for resonant production of high mass photon pairs using 12.9/fb of proton-proton collisions at √s = 13 TeV and combined interpretation of searches at 8 and 13 TeV
Authors: CMS Collaboration
Reference: CERN Document Server (CMS-PAS-EXO-16-027, presented at ICHEP)
In the early morning hours of Friday, August 5th, the particle physics community let our a collective, exasperated sigh. What some knew, others feared, and everyone gossiped about was announced publicly at the 38th International Conference on High Energy Physics: the 750 GeV bump had vanished.
Had it endured, the now-defunct “diphoton bump” would have been the highlight of ICHEP, a biennial meeting of the high energy physics community currently being held in Chicago, Illinois. In light of this, the scheduling of the announcements for a parallel session in the middle of the conference – rather than a specially arranged plenary session – said anything that the rumors had not already: there would be no need for champagne or press releases.
While the exact statistical significance depends upon the width and spin of the resonance in question, meaning that the paper presents multiple p-value plots corresponding to different signal hypotheses, the following plot is a good representative.
Combined background-only ...

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