LOU Xinchou Experimental Physics Center Institute of High Energy Physics Five Top Priorities P ART I.A : Particle Physics October 22 ， 2013 Program Review, Beijing 1

October 22 ， 2013 Reminder about Development Plan Top priority particle physics programs at IHEP What they are Physics interests and objectives The strategy behind the choices Focuses How they will benefit IHEP’s One Development Strategy The people The challenges Summary Outline Program Review, Beijing 2

October 22 ， 2013 One Development Strategy elevating IHEP to a higher level Three Major Goals ensuring significant scientific outputs or discoveries in near to intermediate terms Five Top Priorities positioning IHEP for prominence in long term 1. Particle Physics (this talk) and Particle Astrophysics (ZHANG S. N.) 2. Accelerator Physics and Technology 3. Major Facilities 4. Multi-disciplinary research 5. Spin-off and technology transfer Program Review, Beijing This presentation will focus on the relevancy to ODS and FTP 3 A reminder about Development Plan and Five Top Priorities

October 22 ， 2013 Program Review, Beijing These projects offer the possibility to extend the physics programs pursued by IHEP to 2030 or beyond (LHC, CEPC+SPPC, ILC) 4 Top Priority particle physics programs pursued by IHEP physicists TypeCurrent or near termFuture High intensity acceleratorInternational collaborations Belle-II, PANDA, COMETILC High energy acceleratorsInternational collaborations ATLAS, CMS Higgs factory  pp collider Underground International collaboration: EXOJUNO experimentsInternational collaboration: Dark matter experiments Jinping underground experiment Theoryhadrons & QCD, flavor physics; gravitation and particle cosmology; Higgs Physics, high p T physics

October 22 ， 2013 Program Review, Beijing 5 Timeline of top priority particle physics programs dates to be verified BELLE II BESIII COMET ATLAS-CMS at LHC ILC CEPE+SPPC EXO

October 22 ， 2013 High Energy Frontier ATLAS/CMS Higgs, SUSY, Top ILCHiggs, precision CEPC-SPPCHiggs, precision, discovery Intensity Frontier BELLE-II at KEKXYZ, ISR, flavor physics PANDA at FAIRhadrons, exotics states, QCD COMET at JPARClepton number violating decays Non-accelerator JUNO neutrino mass hierarchy Projects EXO double beta decays Program Review, Beijing 6 Physics Interests and Objectives forefront physics, strongest impact and training of researchers

October 22 ， 2013 Program Review, Beijing 7 Theoretical Physics IHEP Theory Division development strategy – Research in the frontier of high energy, high precision, and cosmology Keep a close cooperation with the relevant IHEP experiments (charmonia, hadron structure, lattice) Strive for breakthroughs with significant originality and international impact in selected directions (Renowned research in cosmology, CKM, CP, neutrino) Flavor Physics and Strong Interaction Dynamics CHEN Ying, DONG Yubing, HUANG Mei, JIA Yu, LU Caidian, WANG Jianxiong, WANG Ping, XING Zhizhong, ZHANG Zongye, and ZHAO Qiang Theory of Gravitation and Particle Cosmology CHANG Zhe, HUANG Chaoguang, LING Yi, WU Junbao, and ZHANG Xinmin Higgs Physics and New Physics at TeV Scale LI Zhao, LU Caidian, XING Zhizhong, and ZHANG Xinmin

October 22 ， 2013 Program Review, Beijing 8 Theoretical Physics Going forward: strengthen the phenomenological studies in neutrino physics, especially in the topics related to the DayaBay, JUNO experiments  origin of neutrino masses, patterns of the lepton flavor mixing, CP violation dynamics, properties of Majorana neutrinos and lepton number violation  matter-antimatter asymmetry in the universe, and  unification theory for the lepton and quark flavor dynamics Strengthen programs in Higgs and high p T physics; To work closely with the physics themes of LHC, ILC and CEPC-SPPC  recruit top scientists, hire bright postdocs and graduate students  initiative to create an International Center for Future HEP at IHEP to bring in top theorists for visits, to interact with theorists in residence and help physics cases for CEPC-SPPC and CDR-TDR development

October 22 ， 2013 Program Review, Beijing 9 The ATLAS and CMS Experiments at the LHC IHEP ATLAS Group Physics Interests Higgs – IHEP involved in the ATLAS Higgs boson discovery – Higgs coupling measurement, production mechanism SUSY + top quark + other Hardware projects Pixel detector upgrade (Phase II) People: 6 senior staff, 4 postdocs, 3 graduate students Photon trigger efficiency and photon ID efficiency studies in H  . 2D photon isolation energy fit method to determine the signal number and different background compositions New method on data-driven top pair background study in H  WW. Corrections on missing Et in H  WW. JIN Shan LOU Xinchou OUYANG Qun ZHUANG Xuai FANG Yaquan ZHU Hongbo Seeds for CEPC-SPPC

October 22 ， 2013 Program Review, Beijing 10 The ATLAS and CMS Experiments at the LHC IHEP ATLAS Group plans to participate in the ATLAS Phase II Pixel Detector Upgrade By ~2018 ATLAS inner tracker will be replaced due to radiation damage Inner tracker must be able to handle high rate, high radiation dosage The sizes of the pixels will be smaller  Participate in ATLAS Phase 0 pixel upgrade to gain experience  Establish in-house lab capability cleanroom, equipment, training, staff  Work with domestic foundries to test-production chips  Develop able design team at IHEP  Rad-hard study, simulation of analysis using pixel detector  Design, produce (out source), build pixel detector for light source Develop pixel detector capability for CEPC-SPPC IHEP Pixel Detector Lab

October 22 ， 2013 Program Review, Beijing 11 The ATLAS and CMS Experiments at the LHC IHEP CMS Group Physics Interests Higgs – IHEP involved in the CMS Higgs boson discovery study of irreducible background cross section  identification & reconstruction effect of interference in Higgs analysis – Higgs physics in general SUSY + b physics + new particle search Hardware projects End-cap muon detector CSC (station 4); muon trigger (Phase 1) End-cap ECAL upgrade (Phase 2) People: 7 senior staff, 3 junior staff, 2 postdocs, 5 graduate students CHEN Hesheng CHEN Guoming ZHANG Huaqiao …… CHEN Mingshui

October 22 ， 2013 Program Review, Beijing 12 The BELLE-II Experiment at KEK Belle-II at SuperKEKB will enable a new generation of precision studies in flavor physics. Data taking expected ~2015. IHEP Belle group observed Z c (3900) and Y(4660) with Belle IHEP Belle group contributes to Belle2Link for the full detector, Pixel Detector readout and data reduction electronics, and other areas. Principle IHEP staff participating in Belle-II: Yuan Changzheng (physics), Liu Zhenan (Trigger and DAQ), Liu Huaimin (MC simulation), and Li Weidong (Computing) YUAN Changzheng LIU Zhenan LIU Huaimin LI Weidong

October 22 ， 2013 Program Review, Beijing 13 The PANDA experiment at FAIR PANDA is a key experiment at the Facility for Antiproton and Ion Research (FAIR) IHEP participates in PANDA and plays significant role within the collaboration PANDA physics includes structure of hadrons and the searches for exotic states overlap well with that of BESIII Principle IHEP staff participating in PANDA: Sheng Xiaoyan, Liu Zhenan LIU Zhenan SHEN Xiaoyan  R&D of trigger and DAQ prototype  EM calorimeter: trigger-DAQ integration  Set example for other subsystems Funding: MOST 973; needs add. 10M RMB TDAQ boardTDAQ prototype

October 22 ， 2013 The COMET experiment at JPARC The related techniques, including production target and high intensity muon beam, are also applicable to accelerator-based neutrino physics and muon physics, possibly at CSNS and other future facilities. High expected single-event sensitivity is 3X10 -17, for  -e lepton flavor violation IHEP contributes to CDC electronics, reconstruction and simulation of CDC tracks and physics analysis. Principle IHEP staff: Li Haibo (leader), Li Weiguo, Jiang Xiaoshan, Yuan Ye, Zhang Yao, Wu Chen LI Haibo LI Weiguo JIANG Xiaoshan

October 22 ， 2013 The EXO Experiment at WIPP EXO: The Enriched Xenon Observatory; liquid xenon TPC as a detector nEXO: next EXO; beyond the 200kg prototype to 5-tone scale experiment 2011, discovered the 2  decay process of 136Xe [PRL 107(2011)212501] 2012, decent limit on  decay half-life [PRL 109(2012)032505] IHEP at EXO-nEXO joined EXO on Sep.14, professor, 2 associate professors, 1 senior engineer Low background data analysis (EXO-200); veto electronics and charge readout, TPC cold electronics R&D (nEXO) 0  decay: N(Z,A)  N(Z+2, A) e- e- The most sensitive probe to the Majorana nature of the neutrino Xe New Mexico, US Principal Scientists: GAO G., JIANG X., WEN L, ZHAO Y.

October 22 ， 2013 Program Review, Beijing 16 The International Linear Collider (ILC) The ILC – More than 20 years in the planning; TDR released in June 2013 Japan announced to host the ILC; operation after 2020 ILC and CLIC united to advance the global development IHEP – Participation in the ILC has been mainly in accelerator technologies Funding (external) requests for ILC have not been successful Supports the ILC and plans to participate in all phases of ILC

October 22 ， 2013 Program Review, Beijing 17 The Circular Electron-Positron Collider as a Higgs Factory (CEPC) The main theme of IHEP future accelerator program Precision study of the Higgs boson Potential at the energy frontier for discovery and exploration Position IHEP for prominence in the long term the people Thinking and discussion

October 22 ， 2013 The Circular Electron-Positron Collider as a Higgs Factory (CEPC) The idea of a circular e + e - collider as a Higgs Factory had been proposed for China at several of the Workshops on Future Accelerator Physics Program in China, during At the September 13, 2012 workshop, an idea to upgrade e + e - collider to a super pp collider adds life and physics potential to the project July 4 th 2012 e + e GeV; pp TeV Qin Qing, HF Workshop at FNAL, Nov , 2012

October 22 ， 2013 The Circular Electron-Positron Collider as a Higgs Factory (CEPC) The LHC Many of the Higgs final states are inaccessible or will be poorly measured due to high backgrounds ILC Sensitivities at nominal luminosity better than LHC High Energy Circular e + e - Collider ~ 250 GeV (e + e -  ZH) Similar precision & physics as ILC(250), at a smaller cost  High precision probe of Higgs gauge couplings & some Yukawa couplings  Does the 125 GeV boson behave differently from the SM Higgs?  can more precisely measure Higgs properties than LHC: mass, JPC, couplings, especially ZZ, bb, ττ, gg couplings, and invisible decays.  Cc can also be measured, which cannot be carried out at LHC  Discriminate new Electroweak Symmetry Breaking Mechanisms from SM Upgradable to TeV pp collisions after the Higgs factory program  Probe Yukawa Couplings of light Fermions.  Discover associated New Heavier States for Fermion Mass Generation.  Discovery any New Heavy States associated with Gauge and  Fermion Sector, from New Gauge Group, SUSY,  Compositeness, Extra- dimension, etc.  More than 1 Higgs boson in nature? Any related New Heavy States?

October 22 ， 2013 The Circular Electron-Positron Collider as a Higgs Factory (CEPC) Standard Model Branching Fractions  e + e - collider offers low QCD background,  precise & adjustable CM energy  recoil mass to study all Higgs final state by tagging the Z boson

October 22 ， 2013 The Circular Electron-Positron Collider as a Higgs Factory (CEPC) The CEPC+SPPC Study Group in China kick-off meeting took place Sept in Beijing; domestic HEP, accelerator and theory physicists organized; IHEP plays leading role To organize first international workshop on high energy circular colliders in the era of the Higgs boson, December 16-17, 2013 at IHEP Need many more scientists: Hiring people with critical skills, training program in China

October 22 ， 2013 The Circular Electron-Positron Collider as a Higgs Factory (CEPC) CEPC Organization – Organization committee: chairman: GAO YuanNing (Tsinghua U); 1 rep. per institution Steering committee: chairman WANG Yifang (IHEP) Project director: LOU Xinchou (IHEP), QIN Qing (IHEP) Working groups:  Theory (Convenor: Hongjia He, Shouhua Zhu)  Accelerator (Convenor: QIN Qing, GAO Jie)  Detector (Convenor : JIN Shan, GAO Yuanning) Hiring people with critical skills, training program in China Plan – CDR ~ May 2015; TDR May 2017 Get the 20 FTE (5 theory, 7 experimentalists, 8 accelerator) needed

October 22 ， 2013 The Circular Electron-Positron Collider as a Higgs Factory (CEPC) first CEPC Training workshop On th October 2013, the workshop has been held at IHEP, Beijing. More than 70 participants from 12 institutes, rank from full professor to undergraduate student, have joined this workshop. The center topics of this training are to share the horizon on CEPC physics program, its detector design and to spread the knowledge and skill on software and analysis tools. H  bb event

October 22 ， 2013 Program Review, Beijing 24 The JUNO Neutrino Experiment JUNO : Jiangmen Underground Neutrino Observatory Precision study of neutrino physics and search for new physics Potential to position IHEP for prominence in the long term Yangjiang NPP Taishan NPP Hong Kong Guangzhou 53 km 20 kton LS Approved in 2013, ~300 M$ 53 km Mass hierarchy, Precision measurement of oscillation parameters Supernovae neutrino Geo-neutrino Sterile neutrino Atmospheric neutrinos Solar neutrino Exotic searches etc. Principal Scientists: WANG Yifang, CAO Jun, YANG Changgen, LI Xiaonan, Heng Yuekun, Zhou Li, Zhang Jiawen, etc.

October 22 ， The JUNO Neutrino Experiment Source: CAO Jun

October 22 ， 2013 Program Review, Beijing 26 The JUNO Neutrino Experiment JUNO is the first experimental proposal to measure mass hierarchy using reactor neutrinos  L. Zhan, Y.F. Wang, J. Cao, L.J. Wen, PRD78:111103, 2008 and PRD79:073007, 2009 JUNO will determine mass hierarchy to 4  in 6 years, and measure 3 mixing parameters to sub-percent level  Y.F. Li, J. Cao, Y.F. Wang, L. Zhan, PRD 88, (2013) currentJUNO  m %3%0.6%  m %5%0.6% sin 2  12 6%6%0.7% sin 2  23 20%N/A sin 2  13 14%  4%~ 15% Source: CAO Jun

October 22 ， The JUNO Neutrino Experiment Source: CAO Jun

October 22 ， The JUNO Neutrino Experiment Source: CAO Jun

October 22 ， The JUNO Neutrino Experiment JUNO detector 20 kton Liquid Scintillator detector (20x the current largest) 3%/  E energy resolution (2x the current best) Three major challenges High efficiency PMT (new type PMT R&D led by IHEP) High transparency liquid scintillator (purification R&D) Huge detector (mechanic options) Source: CAO Jun

October 22 ， 2013 Program Review, Beijing 30 Challenges and Possible Solutions CEPC-SPPC Great opportunity as well as real challenge for China Manpower shortage  Hiring talents; training and development  Collaboration with outside institutions including foreign ones Needs the critical technologies or know-hows  R&D programs crucial, international collaborations  Engineering quality control in long term for a large collider High price is an obstacle, though it is much cheaper than the ILC  Optimization of the accelerator design; understand the cost basis  Go beyond scaling up LEP & apply new technologies to be cost effective Requires a new site beyond Beijing campus  Selection of adequate CEPC site jointly with other facilities

October 22 ， 2013 Program Review, Beijing 31 Challenges and Possible Solutions JUNO Manpower shortage  Hiring talents, training and redeployment of IHEP staff;  Collaboration with outside institutions including foreign ones Detector: technology, quality and large size International Collaborations Unstable, insufficient funding for many of these experiments  Get started with available funds & build the momentum  Build a strong team of scientists to compete for funding Make strong impact in a highly competitively environment  Critical mass; increase on-site participation at foreign labs

October 22 ， 2013 IHEP particle physics programs, as part of the top five priorities, are presented These physics programs offer excellent physics opportunities in the long term can propel IHEP to the leading edge of HEP research and prominence flagship experiments (CEPC, JUNO) will attract top talent to China will grow Chinese HEP community We need the strong support from CAS & the national government We need to keep open, international collaboration to do the best science 32 Summary Program Review, Beijing