# Presentation: 409738

## Progress in Experimental Aspect of Higgs and SUSY Physics with  CMS at LHC

**U. of Maryland**
**Shuichi Kunori**
**12-Apr-2001**
**LHC and CMS**
**SM Higgs**
**MSSM Higgs**
**Conclusions**

## LHC Schedule

**31-Dec-05****      **
**       ****Ring Closed and cold**
**01-Jan-06 to 31-Mar-06 **
**       ****Machine commissioning**
**01-Apr-06 to 30-Apr-06**** **
**        ****First collision, pilot run**
**             ****L=5x10****33**** to 2x10****33****, <1 fb****-1**
**        ****Detector commissioning**
**             ****~105 Z->ll, W->l********, tt events**
**1-May-06 to 31-Jul-06 **
**        ****Shut down:**
**              ****Continue det. Installation**
**1-Aug-06 to 28-Feb-07**** **
**        ****Physics run        **
**              ****L=2x10****33****, 10 fb****-1**
**Design luminosity : **
**       ****L=10****34 ****cm****-1****s****-1****,  100 fb****-1****  2008 ?**

**The magnet transport robot with**
**First preseries dipole (08-Feb-01)**

**7+7 TeV**

## CMS

**1****st**** iron yoke wheel extracted (Oct’00)**

**Reception of HB1 at Felguera, Spain (Oct’00)**

**Surface buildings and shaft at Point 5**

## SM Higgs

- gg  fusion

- WW/ZZ fusion

- associated

- associated WH, ZH

**production**

**decay**

## gg -> HSM

**1 iso. lepton         ****(PT>10GeV)**** **
**6 jets**** (*****4 b tag*****)    ****(ET>20GeV)**
**   ****-> max. likelihood **
**     ****(b likeliness, W mass, top mass ...)**

**M****H****=115 ****GeV**

**Bg:**
**   ****ttbb, ttjj, ttZ****0**

**Mass(jj)**

**M****H**

**5**

**30fb****-1**

**mistagging probability (%)**

********

******m/m=3.8% (stat)**

**bb**

**1 iso. lepton (e,********)     ****(P****T****>20GeV)**
**only 2 jets (b-tag)     ****(E****T****>30GeV)**
**M****T****(W)**
**   ****-> events in higgs mass window**

**M****H****=115 ****GeV**

**Bg:**
**  ****Wjj, tt, tb**

**5**

**300fb****-1**

**bb**

## Couplings

## VB Fusion / Forward Jet Tag

**qqH ******** ZZ ******** ll********          400-1000GeV**
**qqH ******** WW ******** l********jj         400-1000GeV**
**qqH ******** ************ (****l********)(****j********)          100-150GeV**
**qqH ******** WW ******** (****l********l********        115-190GeV ****(1)**
**qqH****SUSY ******** invisible          110-400GeV ****(2)**

**1) N.Kauer, T.Plehn, D.Rainwater, D.Zeppenfeld hep-ph 0012351**
**       ****5******** signal with 35fb-1 for M****H****~115 GeV**
**2) O.J.Eboil and D.Zeppenfeld, hep-ph 009158**
**       ****limit:   BR(invisible) 13% **
**                   ****Mass 480GeV (for BR~100%) with 10fb****-1**
**        **** ******** ****forward jet trigger**

**Typical selection for forward jets **
**       ****E****t****(q) > 40GeV, |********q)|<5.0**
**       ****|********q1q2)|>4.4, M(q1q2) >1TeV**
**       ********(q1)*********(q2)<0**

****** ****~ 10% of gg-fusion **
**     ****at smaller M****H**

## qqH, H -> 2 -> (l)(j)

**Event selection:**
**   ****E****t****(e,********) > 15GeV, |********e,********)|<2.4**
**   ****E****t****(******** > 30GeV, |********|<2.4**
**   ****E****t****(q) > 40GeV, |********q)|<5.0**
**   ****|********q1q2)|>4.4, M(q1q2) >1TeV**
**   ****mini-jet veto**

**Bg:**
**   ****Zjj, Wjj, bbjj**

****

** ****Trigger:**
**      ****1 lepton**
**      ****1 tau-jet**

## Higgs Couplings

## bbHSUSY -> 

**M****A****=200GeV**

**M****A****=500GeV**

**M(********)**

**M(********)**

**0**

**400**

**800**

**400**

**800**

**b-tag**

**- b tagging**

**- ********-jet trigger at Level 1- 3**
**     ****calo: narrow jet,    pixel: 1 charged track**
-            See A.Nikitenko’s talk at Higgs & SUSY at Orsey
-            http://www.lal.in2p3.fr/actualite/conferences/higgs2001/index.html

## H+ -> ->-jet  in tbH 

**bg:**
** ****tt, Wtb, Wjj**

******             ****- tau-jet**
******              ****- missingET**

** ****t********Wb      ****- W, top mass window**

**b             ****- b tagging**

****** ****mode is**
**cleaner than**
**tb**** mode!**

## polarization & cut

**p********/E********-jet**

**p********/E********-jet**

**Tau polarization in H****+**** decay**
**          ****(pointed out by D.P.Roy)**

******60****o**** cut**

**cut**
**0.8**

**60****o**

## Mass and Discovery potential

**5s significance countours**

**0**

**400**

**0**

**300**

**200**

**200**

**M****A****=200GeV, 30fb****-1**

**5s significance contours**** **

**bg**

**4 iso. Lept (Pt<80GeV)**
**20 < MissEt < 130GeV**
**ET jet <100 GeV**

**Mass(4 leptons) GeV**

**400**

**0**

## Conclusions

**LHC and CMS**
**Many components have been already built and assembled.**
**First physics run: Aug.2006 –Feb.2007 for 10fb****-1****.**
**SM Higgs**
**Full mass range is covered for 5******** discovery.**
**MSSM Higgs**
**Whole parameter space will be covered with 30fb-1, except ‘void’ around M****A****~200, tan********~8 (which requires higher luminosity or improved acceptance or new channels.)**
**On going/future studies**
**Focus has been shifted from ‘discovery’ to ‘measurement of Higgs/SUSY parameters’.**
- Adding new channels: e.g.
**WBF (qqH) channels: H************, WW(l********l********), invisible.... more**
- Improving/developing new algorithms (low  high luminosity)
**trigger and identification – tau, forward-jet, b-jet**
**resolution and energy scale - jets and missingEt**