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<center>FLAV_01 : *Characterization of the !SuperKEKB beam induced background during the BEAST commissioning of the Belle II experiment* </center>

_Summary_ :<br>

The !SuperKEKB e+e- circular collider is a Super B-factory designed to reach the highest ever achieved instantaneous luminosity of 8×10^35 /cm^2 /s^1. !SuperKEKB intense beams are expected to produce a very high level of background particles, increasing the detector occupancy and the radiation level, with major impact on the 2 innermost layers of the vertex detector.
The present project is about defining a contribution to the characterisation of the !SuperKEKB induced background within the Belle II inner tracker volume, using CMOS pixel sensors developed by the PICSEL group. This background study will be performed during the Belle II experiment commissioning (BEAST) scheduled from end of 2015 to end of 2016. 

_French members_ :<br>
*I. Ripp-Baudot*, J. Baudot, A. Besson, G. Claus, M. Goffe, M. Szelezniak

_Japanese members_ : <br>
*Y. Ushiroda*, H. Nakayama, K. Nakamura, S. Tanaka, 

_References_ :<br>
- A.Nomerotski et al., "PLUME collaboration : Ultra-light ladders for linear collider vertex detector", Nucl.Instr.Meth. A650 (2011) 208-212.<br>
- J. Baudot, talk given at the June 2014 ECFA Detector Panel Review Open Session: "Development of ultra-light pixelated devices based on CPS". https://indico.desy.de/materialDisplay.py?contribId=2&materialId=slides&confId=10026<br>

_website_:<br>
- The Belle II experiment:  http://belle2.kek.jp/<br>
- The PLUME project: http://www.iphc.cnrs.fr/PICSEL.html<br>
- The PICSEL group: http://www.iphc.cnrs.fr/PLUME.html<br>

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<center>FLAV_02 : ** </center>

_Summary_ :<br>
Flavour physics, and B physics in particular, constitutes one of the most promising probes of physics beyond the SM. The CP asymmetry measurements in the Bd and Bs systems as well as the observation of the large number of rare decays, such as B &#8594; Xs &#947; and Bs &#8594; µ+ µ &#8722;, have been studied at B factories as well as at LHCb. These processes are all induced by the loop level diagrams and thus, provide valuable indirect information on physics beyond the SM. Despite of a large expectation, there is no significant deviation from the SM observed so far. The very successful 7-8 !TeV runs of LHC have excluded a large parameter space for many of the new physics models. In this circumstance, the most urgent task is now to re-examine the viability of these models and to determine the new benchmark models and their search strategies for the forthcoming experiments. This project combines two joint efforts towards this goal: i) LHCb-Belle II-theory common discussion towards a global fit of the new physics parameters, ii) contributions to the theory-experiment working group towards Belle II start-up.

_French members_ :<br>
*M-H. Schune*, B.Blossier, E. Kou, F. Le Diberder, B. Moussallam, F. Polci, R. Poeschl, G. Wormser

_Japanese members_ : <br>
*K. Hara*, T. Goto, S. Hashimoto, T. Higuchi, R. Itoh, K. Trabelsi, K. Hayasaka, J. Hisano, T. Iijima, M. Nojiri, Y. Sato

_References_ :<br>
1) Implications of LHCb measurements and future prospects
Published in Eur.Phys.J. C73 (2013) 2373
e-Print: arXiv:1208.3355 <br>
2) !SuperKEKB TDR - Physics Motivation Chapter (2014)
https://belle2.cc.kek.jp/~twiki/pub/Public/B2TIP/SuperKEKBReport.pdf <br>
3) Webpage of Belle II Theory Interface Platform (!B2TiP), an initiative to coordinate a joint theory-experiment effort to study the potential impacts of the Belle II program.
https://belle2.cc.kek.jp/~twiki/bin/view/Public/B2TIP

_website_

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Topic revision: r1 - 2015-06-18 - 15:00:11 - GenevieveGilbert

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