How to Get Involved in SiD Richard Partridge Brown / SLAC LCWS 07

LCWS 2007 SiD Meeting Richard Partridge2 Why Get Involved in SiD Now? u During the next ~3 years, it is imperative for the ILC community to develop two optimized, complementary, and well understood detector designs that demonstrate the ability to carry out a compelling physics program Hard to imagine the ILC can be approved without this u SiD will be one of these two detectors The precision, speed, and robustness of silicon detectors is unmatched by the competing technologies u You can make a significant contribution in shaping the SiD detector design The software tools needed for optimizing the detector design are either in place or well advanced, but the process of using these tools to optimize the detector design has barely started An active detector R&D program is essential to make informed technical choices, develop detailed detector designs, and demonstrate the feasibility of these designs through simulations, prototypes, and test beam studies

LCWS 2007 SiD Meeting Richard Partridge3 How to Get Involved in SiD A 3 step program for getting involved in SiD 1.Identify an area in SiD where you would like to contribute 2.Talk with SiD leadership about your interests and our needs 3.Start attending meetings and begin contributing to SiD

LCWS 2007 SiD Meeting Richard Partridge4 A Tour of SiD for Higgs Bosons u A comprehensive program of precision measurements of Higgs Boson properties is a key reason for building the ILC u Since Higgs Bosons are known to be a demanding lot, they place many requirements on detector performance u Focus on 3 Higgs Boson measurements to illustrate how our physics goals impact detector design and provide opportunities for you to contribute to SiD Branching ratios Search for invisible Higgs decays Triple Higgs coupling

LCWS 2007 SiD Meeting Richard Partridge5 Higgs Branching Ratio u The Standard Model (and many beyond the Standard Models) account for particle masses through couplings to one or more Higgs Bosons Couplings are proportional to m 2 u We can test this hypothesis by measuring the branching ratios of the Higgs to all accessible final states u Particularly challenging to separate bb, cc, and gg decay modes – requires excellent vertex detector performance

LCWS 2007 SiD Meeting Richard Partridge6 Vertex Detector Projects u Pixel sensor development and testing u Mechanical design and testing u Power delivery and signal transmission u Vertex and flavor tagging algorithms u Test beam program Vertex Contacts: Su Dong Ron Lipton Bill Cooper (mechanics)

LCWS 2007 SiD Meeting Richard Partridge7 Search for Invisible Higgs Decays  Look at ZH production with Z   +  - u Higgs events can be identified in the Z recoil mass u Measurement makes no assumptions about Higgs decay, so sensitive to invisible and non-SM decays u Sharpness of the recoil mass peak depends on tracker momentum resolution

LCWS 2007 SiD Meeting Richard Partridge8 Tracker Projects Tracker Contacts: Marcel Demarteau Rich Partridge Bill Cooper (mechanics) u Module design and testing u Mechanical design and testing u Alignment and vibration measurement u Forward tracker design u Tracking algorithms and optimization u Test beam program

LCWS 2007 SiD Meeting Richard Partridge9 Triple Higgs Coupling  Triple Higgs coupling is a consequence of the  4 term in the Higgs potential u SM makes a precise prediction for this coupling u SiD can measure the triple Higgs coupling in the ZHH channel u Small cross section – will need to use multijet final states like qqbbbb u Need good calorimeter performance to identify Higgs mass peaks

LCWS 2007 SiD Meeting Richard Partridge10 Calorimeter Projects u ECal design and testing u HCal design and testing u Mechanical Design u PFA development and studies  Other Simulation studies: ,  0, #, etc. u Test beam program Calorimeter Contacts: Ray Frey (ECal) David Strom (ECal) Jerry Blazey (HCal) Harry Weerts (HCal) Norman Graf (PFA) Steve Magill (PFA)

LCWS 2007 SiD Meeting Richard Partridge11 Muon and Solenoid Projects u Muon system design u Muon tracking algorithms and studies u Punch-through, background studies u Test beam program u Solenoid design Muon/Solenoid Contacts: Henry Band (muon) Gene Fisk (muon) Paul Karchin (muon) Kurt Krempetz (solenoid)

LCWS 2007 SiD Meeting Richard Partridge12 Forward Detector and MDI Projects u LumCal, BeamCal, GamCal design u MDI design u Energy, polarimeter design u Beam pipe design Forward Det. Contacts: Bill Morse (Forward) Phil Burrows (MDI) Tom Markiewicz (MDI) Tauchi Toshiaki (MDI)

LCWS 2007 SiD Meeting Richard Partridge13 Benchmarking Projects u Physics performance studies Benchmarking Contacts: Tim Barklow Aurelio Juste

LCWS 2007 SiD Meeting Richard Partridge14 Simulation Projects u Detailed detector simulation u Algorithm development and detector optimization through simulation Simulation Contact: Norman Graf StdHep Events SLIC LCDD XML LCIO Events Geom Converter Compact XML org.lcsim JAS3 WIRED4 AIDA HepRep XML Conditions Software Package Data Format User Analysis Drivers

LCWS 2007 SiD Meeting Richard Partridge15 Summary u It is a great time to get involved in SiD u Many interesting projects that need your help u More information can be found in the SiD talks in LCWS u Getting started is easy: 1.Identify an area in SiD where you would like to contribute 2.Talk with SiD leadership about your interests and our needs 3.Start attending meetings and begin contributing to SiD See the SiD web page for links to further information: