1. 2013 Experimental Particle Physics Activities & Future Strategies Jornada Informativa IFCA 2013
Iván Vila Álvarez (+ R. Vilar and L. Scodellaro slides)
Instituto de Física de Cantabria (CSIC-UC)

2. Outline Current activities and results: Short term plans:
initial exploration of the EWSB sector.
Short term plans:
Exploring the new energy frontier (LHC Run2)
Long term strategy on collider physics:
The International Linear Collider and the High Luminosity LHC
Jornada Informativa IFCA Dec 2013

3. LHC and CMS performance
Jornada Informativa IFCA Dec 2013

4. CMS at IFCA Task for the detector
National coordinated funding projects with University of Oviedo and also computing and instrumentation projects with Ciemat and Centro Nacional de Microelectrónica
Contributions to CMS
Central shifts, Core computing, Muon Alignment, TC--‐monitoring, Offline Reconstruction, PPD, analysis activities
Strong contribution in DPG and POG activities
Physics analysis, computing T2&t3, software, upgrade
Recently:
Silicon Tracker upgrades
Data Preservation
People
16 PhDs
4 Doctoral students
(1 Master student)
4 engineers
1 technician
Jornada Informativa IFCA Dec 2013

5. Responsibilities in CMS
DPG and POG
Convener of POG B-­‐tag : Luca Scodellaro (2014-­‐2015)
Expert contact persons from muon POG inside: Higgs (A. Calderon), Top(L. Scodellaro)
Coordination of the DQM project, coordination of the offline Muon certification and data validation: A. Calderon
Coordination of MC releases validation and code development : R. Vilar
Offline JETMET validation code: J. Piedra
CRB computing: F. Matorras
Jornada Informativa IFCA Dec 2013

6. What Physics have we done?
Dilepton signatures:
Work on physics analysis with two charged leptons (ee,mm, em), neutrinos and multi-jets:
Jornada Informativa IFCA Dec 2013

7. Physics analysis: Higgs
Jornada Informativa IFCA Dec 2013

8. Higgs properties
Jornada Informativa IFCA Dec 2013

9. Physics analysis WW/WZ production
Results at 7 TeV ( Thesis of Jordi and Clara)
First Results at 8 TeV published
WW published with partial luminosity (3.2 fb-1)
Working on full luminosity and other properties such as differential cross sections, anomalous couplings, etc (could be indications of new physics).
Expected final publication(legacy paper) spring-summer 2014
Jornada Informativa IFCA Dec 2013

10. Physics analysis: top physics
Publication in Top production cross section at 5.3 fb-1 about to be send it
Working on full luminosity with more properties added (legacy paper).
Expected time summer 2014
Jornada Informativa IFCA Dec 2013

11. Physics analysis: Supersymmetric top
Stop: SUSY (supersymmetry) partner of top
Similar signature as top but with more MET
Publish in summer 2014
Jornada Informativa IFCA Dec 2013

12. What when LHC starts again
States with two leptons, two b-jets and MET:
Re-establish the SM again:
Dibosons, Top
Higgs, and studied deeper details of the properties
Search for new Physics (DM candidates)
SUSY particles: stop, adding new channels the differences in kinematics are small and increase the stat.
~t -> t ~X0 -> bln~X0
~t -> b ~X ->bW ~X0 -> bln~X0
~t -> b ~X -> bln ~X0
~t -> b ~X -> bl~n
~t ->bl~n
If SUSY exists, it provides a natural DM candidate
Direct DM search: monotop
Pp->Top+DM
Jornada Informativa IFCA Dec 2013

13. FUTURE EXPERIMENTS

14. LC 101: Why a e+e- collider?
Historically , hadronic and lepton colliders have been complementary roles in particle physics.
Hadrons are composite objects with a complex and dynamic internal structure. Leptons, to our current levels of resolution, are point­‐like with a well defined initial state previous to the collisions.
Lepton colliders can be tuned to particular constituent energy collisions with very high precision and all particles in the final state are a product of the initial hard collision (full event recons)
Why do we want to build a e+e- linear collider.
Physics case: In the wake of the Higgs-like particle discovery.
Jornada Informativa IFCA Dec 2013

15. LC 101: A flexible and Staged energy reach
Staged deployment to reach its maximum energy from the Z peak to the multi-TeV energy range.
A possible minimal LC program:
A low energy phase with ECM in the range of GeV, enabling the study of ZH, tt, HHZ and ttH thresholds
A high-energy phase with ECM > 500 GeV allowing a high statistics study of the Higgs boson through the WW fusion process and potential BSM physics.
The ECM energy range for the higher energy phase determined by the BSM physics scale.
Jornada Informativa IFCA Dec 2013

16. Physics Highlights @Linear Collider Model- independent absolute ZH Xsec and BR extraction
250 GeV
DsH/sH = 2.5%
DmH = 30 MeV
Model independent analysis, sensible to invisible Higgs decays.
Reconstructing the invarian mass distribution of the system X recoilling against the identified Z to mumu event -> ABSOLUTE ZH XSEC
Furthermore, a explicit indentification of the final state for the different Z and H decays provides a absolute M-I BR measurement.
Jornada Informativa IFCA Dec 2013
22/11/12

17. A precision game: Higgs couplings
LHC (30/300/1000/3000 fb-1)
LHC (3000 fb-1) ; LC(500GeV/500fb-1)
[D. Zerwas]
[M. Peskin]
LHC (3000 fb-1);LC(HLC/ILC/ILCTeV)
Still very preliminary studies, need for optimization and learning…
Altarelli et al 1989, Yellow Report, final precision reached was
[D. Zerwas]
Jornada Informativa IFCA Dec 2013

18. Do we need such a precision ?
Stability of the SM Vacuum
In the decoupling limit deviation for SM couplings small.
If no NP deciding on SM Vacuum stability needs Dmtop< 200 MeV
Jornada Informativa IFCA Dec 2013

19. vila@ifca.unican.es, Jornada Informativa IFCA Dec 2013

20. R&D Challenges summary:
Vertexing
extremely light and relatively fast and precise tracking
Tracking
Very low material budget and relatively good hit resolution.
Calorimetry
High granularity (tracking calorimetry) for FPA and improved energy resolution.
System wise:
Minimal active cooling → power pulsing
In a nutshell: ILC detectors as ultimate Particle Flow experiment with excellent flavor(b,c) tagging capabilities.
Jornada Informativa IFCA Dec 2013

21. Our contribution to the baseline design of the ILD detector Concept
J. Fuster in ILC TDR editoral team
Nueva slicitud de proyecto plan nacional (ocho instituciones coordinado por ifca)
Jornada Informativa IFCA Dec 2013

22. High Luminosity Upgrade of LHC
Jornada Informativa IFCA Dec 2013

23. 3D sensors for CMS phase-2 vertex detector upgrade

24. 3D Silicon Detectors: Superseding the planar technology
Jornada Informativa IFCA Dec 2013

25. Motivation: Radiation hardness
Strip 3D sensors (285 um thick, 80 um pitch)
25MeV KIT
Alivaba readout.
N-in-P
-40 ºC
Jornada Informativa IFCA Dec 2013

26. Outlook
Actively involved in CMS mainstream analysis (leading role in some Higgs analysis groups)
Important R&D effort tackling state-of-art detector R&D issues for future energy frontier collider experiments
Good international and European networking.
R&D synergies and spin-offs:
Technological Transfer: Nuclear industry
New generation of light sources: Free Electron Lasers and Petawatt laser facilities.
Explore new common projects with other IFCA groups
Jornada Informativa IFCA Dec 2013

27. Spanish LC Community at a Glance
Instituto de Física de Cantabria (IFCA)
Instituto Tecnológico de Aragón (ITA)
Centro Nacional de Microelectrónica de Barcelona (CNM-IMB)
Universidad de Barcelona (UB)
Centro de Investigaciones Medioambientales y Energéticas
Instituto Nacional de Tecnicas Aeronauticas
Instituto de Física Corpuscular (IFIC)
Physics groups
Technological Centers
Jornada Informativa IFCA Dec 2013