The ATLAS Pisa group a quick guide through

The ATLAS Pisa group a quick guide through our past/present/future Chiara Roda Universita` and INFN di Pisa On behalf of the ATLAS Pisa group meeting – 29. 1. 2013 C. Roda – ATLAS - Universita` & INFN Pisa 1

Particle physics research in Italy Particle and nuclear physics research in Italy is financed and managed from INFN (Istituto Nazionale per la Ricerca Nucleare). INFN is organized in 20 local sections + 4 National laboratories. The research in divided in 5 branches, named Commisioni Scienttifiche Nazionali (CSN), according to the subject of research: CSN 1 - experimental research with accelerators CSN 2 - experimental research without accelerators CSN 3 - Nuclear Physics CSN 4 - Theoretical physics CSN 5 – R&D projects The INFN Pisa section is one of the largest sections and has activities in all the CSN. Activities in CSN 1 in Pisa are in CMS, , LHCb, NA 62, Belle. II and ATLAS Pisa group meeting – 29. 1. 2013 C. Roda – ATLAS - Universita` & INFN Pisa 2

The ATLAS Pisa group Staff Name Work on: R. Becherle FTK V. Cavasinni Tile/FTK/Analysis G. Chiarelli Qualifying ITK M. Dell’Orso FTK T. Del Prete Tile/Analysis S. Donati FTK P. Giannetti FTK S. Leone Qualifying on Tile M. Piendibene FTK C. Roda Tile/FTK/Analysis F. Scuri Tille ATLAS Pisa group meeting – 29. 1. 2013 Name Position Work on F. Bertolucci Ph. D - Phys Tile/FTK/Analysis S. Citraro Ph. D - El Ing FTK P. Luciano Ph. D – El Ing FTK L. Luongo Ph. D - Com. Sci FTK M. Spalla Ph. D - Physics Tile/Analysis G. Volpi Post. Doc FTK/Analysis T. Kubota U. of Melbourne FTK V. Kazanine Novosibirsk Inst. Tile/FTK The group at the moment consists of 11 Staff and 5 students/post. Docs + 2 part time members. The group has considerably grown in the last 2/3 years thanks to part of the ex-CDF group that has joined ATLAS. C. Roda – ATLAS - Universita` & INFN Pisa 3

The detector activities in the ATLAS Pisa group The group has participated to ATLAS since the Letter of Intent time (1992). The historical group has participated to the R&D, project, construction and operation of the central hadronic calorimeter section Tile. Cal. We have developed a monitoring program for the Tile. Cal TB that has then been exported to the whole ATLAS. With this project we have started a collaboration with the computer science students. About ten years ago the group that has developed the tracking trigger for the inner CDF detector (SVT) has proposed to ATLAS the trigger upgrade FTK and the members of FTK have joined the ATLAS group. After the end of the Tevatron Run part of the CDF group has joined ATLAS. Main expertise on inner detector and top/ewk analysis. The group interest on the detector side are shared on two main items: Tile. Cal and FTK ATLAS Pisa group meeting – 29. 1. 2013 C. Roda – ATLAS - Universita` & INFN Pisa 4

Tile Calorimeter Ext. Barrel 3 barrels, The hadronic calorimeter is 64 wedges composed of 3 systems: 11 m each Tile. Cal cover | | < 1. 7 Principle of operation of TILE 4. 2 m Barrel 2. 3 m Peculiar geometry to obtain high hermiticity Iron plates ( 80%) + Scintillating Tiles ( 20%) 3 Longitudinal samples: 1. 5 + 4 +1. 8 = 0. 1 Signal sampling up to 175 ns Construction: built ¼ of the barrel, characterization of PMT and fibers ATLAS Pisa group meeting – 29. 1. 2013 C. Roda – ATLAS - Universita` & INFN Pisa 5/16

Tile. Cal module production in Pisa 310 1. 2 T components to assemble with few tens of micron precision May 1998: Beginning of the work ATLAS Pisa group meeting – 29. 1. 2013 May 2002: End of the construction in Q. C. - Universita` & INFN Pisa C. Roda – ATLAS 6

PMT and fiber characterizazion in Pisa laboratory 1550 PMT measured and characterized ATLAS Pisa group meeting – 29. 1. 2013 C. Roda – ATLAS - Universita` & INFN Pisa 7

Tile. Cal work today Physics event Tile and fibers Cesium PMT and optics Laser Electronics Charge Injection Calibration systems LASER events used to monitor/calibrate the stability of the PMT gain at 1%. The present system is not as stable as desired development of the LASERII system. The upgrade involves new light monitor system, new read-out electronics and new light distribution system. Pisa is co-responsabile for the development of the new optic distribution. ATLAS Pisa group meeting – 29. 1. 2013 C. Roda – ATLAS - Universita` & INFN Pisa 8

The Fast Trac. Ker project Dec 2010 TP and IDR http: //hep. uchicago. edu/~shochet/TP/FTK_TP_USG. pdf https: //indico. cern. ch/material. Display. py? contrib. Id=2&material. Id=0&conf. Id=72790 June 2011: Endorsement as Upgrade Project in June 2011 CB: https: //indico. cern. ch/get. File. py/access? contrib. Id=8&res. Id=1&material. Id=2&conf. Id=119831 June 2013: TDR made available to LHCC as advanced draft: http: //cds. cern. ch/record/1552953/files/ATLAS-TDR-021. pdf 11 th June 2013: Presentation to LHCC. 21 st June 2013 Collaboration Board Approval of the Fast Trac. Ker (FTK) Technical Design Report 24 th September: Approval from LHCC. Next steps: Performance note, draft to be ready for the ATLAS Week. On the HW side work is ongoing to test the first set-up (part of the barrel) in the first months of 2015 data taking. ATLAS Pisa group meeting – 29. 1. 2013 C. Roda – ATLAS - Universita` & INFN Pisa 9

Activity in Pisa, HW and performance Pisa is the historical proponent of the project works on both HW and on performance studies for tau. More on this from P. Giannetti (deputy PL and Italian FTK coordinator) ATLAS Pisa group meeting – 29. 1. 2013 C. Roda – ATLAS - Universita` & INFN Pisa 10

Activity on analysis only the most recent and the physics analysis ATLAS Pisa group meeting – 29. 1. 2013 C. Roda – ATLAS - Universita` & INFN Pisa 11

Jet cross section studies – the past ar. Xiv: 1112. 6297 v 2 [hep-ex] - Inclusive jet cross section PRD P. Francavilla one of the editors Multi. Jet cross section EPJC Z. Zinonas leading the analysis Gamma-Jet cross section M. Cascella P. Francavilla (Inclusive Jet Cross-Section” best ATLAS thesis prize 2012 Pisa (1 of 3) ATLASTesi Pisa. Dott. group meeting – 29. 1. 2013 C. Roda – ATLAS - Universita` & INFN 12

H τhad H tau is a key channel to measure the couplings to fermions Pisa has been pioneer in the all hadronic final state. Produzione (m. H=125 Ge. V): gg flusion =19. 5 pb VBF = 1. 6 pb VH = 1. 1 pb BR(H tautau) = 6. 2% More on this in the presentation of V. Cavasinni. This is the main physics analysis for the group in 2015 C. Roda and we need- Universita` to potentiate it. Pisa ATLAS Pisa group meeting – 29. 1. 2013 – ATLAS & INFN 13

WV lνjj: cross-section and a. TGC limit Analysis started to verify the CDF anomaly – ATLAS-CONF-2011 -097 Diboson cross-section measurement in semileptonic final states -ATLAS-CONF-2012 -157 The new analysis includes the a. TGC limit. Working toward publication. More on this from F. Bertolucci (Ph. D thesis on this analysis). An effort is now starting to work on 2012 data - M. Spalla (Ph. D thesis on this subject) ATLAS Pisa group meeting – 29. 1. 2013 C. Roda – ATLAS - Universita` & INFN Pisa 14

Summary The activities in the ATLAS Pisa groups are growing both on the detector and analysis side. The role held up to now in the analysis needs for new man-power both the diboson and H tautau analysis Our aim is to do our best to exploit the new power given by the FTK upgrade. ATLAS Pisa group meeting – 29. 1. 2013 C. Roda – ATLAS - Universita` & INFN Pisa 15