1 / 5

NA49/T2K

NA49/T2K. Introduction to the physics case. Preamble: since I have not myself run any code or simulations of performance what follows aims at bringing out arguments to build up the physics case for the T2K NA49 proposal.

pascal
Download Presentation

NA49/T2K

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. NA49/T2K Introduction to the physics case Preamble: since I have not myself run any code or simulations of performance what follows aims at bringing out arguments to build up the physics case for the T2K NA49 proposal.

  2. philosophy: envisage this experiment as if it would never be done again ==> get from CERN assurance that either we collect a sufficient amount of data in the first couple of years, (preferred solution) or that the apparatus is preserved in a good enough state From HARP experience these measurements are everything but easy. Do the measurement to a quality level that allows sufficient precision to the end of the programme

  3. Standard Oscillation framework --Four different phases/precision levels 1. Precision measurements of disappearance channel --> Atmospheric parameters: Dm223, sin2q23 Here we are mostly concerned about the far/near ratio for CC nmevents useful plots: Far/near for non-oscillated nmand sensitivity to K/pi ratio, Pion average mom., average pT or model. 2. Discovery or confirmation of the nm-> nechannel --> order of magnitude of 13 need good measurement of (at least) the K/pi ratio since this affects the near/far ratio for nebackground and p0background useful plots: Far/near for nebackground and p0background 3. Precise measurement of P(nm-> ne) for comparison with e.g. D-CHOOZ for CP or NOvA for matter effects (statistical error will depend on q13)Useful plots: all of the above +? 4. Ultimate measure: ACP in T2HK or T2KK etc… need a precise measurement of the neutrino and antineutrino fluxes for numu and nue, with perhaps one overall normalization missing. From the HyperK plots 2% systematics already bites into the stat. precision? some antineutrino plots? Non Standard Oscillation: ex: disappearance measurements in the NC channel check serile neutrinos etc… useful plots: Far/near for non-oscillated nm +ne ?

  4. from Hiraide

  5. from Fechner

More Related