1. Nick Hadley Run II Physics (I) Nick Hadley The University of Maryland New Perspectives 2000 Fermilab - June 28, 2000

2. Nick Hadley New Director redefines Run II Run II just continues... –2 fb -1 by end of 2002 –at most 9 month shutdown install new silicon ~ 15 fb -1 (or more) by 2007 Fermilab schedule slippage –New schedule Fall 1999 vintage –Data taking now begins in March 2001 CDF DØ MI Tevatron

3. Nick Hadley Outline Run II - what is it Brief description of Dzero Upgrade Top Physics W/Z Physics B Physics See Max Chertok’s talk tomorrow for Run II (II) –CDF Upgrades –QCD, New Phenomena, and Higgs

4. Nick Hadley Run I  Run II Subprocess  s Number of Events Run II Run I Increased reach for discovery physics at highest masses Huge statistics for precision physics at low mass scales Formerly rare processes become high statistics processes The Tevatron is a broad-band parton-parton collider Extend the third orthogonal axis: the breadth of our capabilities

5. Nick Hadley Run II Improvements New detector capabilities –displaced vertex b-tagging –much improved muon momentum resolution –tracking triggers –mass reconstruction from charged tracks –forward proton detector Statistics - 100 pb -1 --> 2 fb -1 –Huge statistics at “low” mass scales B-physics, QCD, W-mass –Formerly rare processes enter the precision domain QCD with vector bosons, thousands of top events –rule out or confirm unusual Run I effects the high-E T jet “excess”, the CDF ee  event Increased reach at the highest mass scales SUSY, Higgs, quark compositeness, etc.

6. Nick Hadley Continuing strengths Jets Missing E T m W = 80.450  0.093 GeV DØ electrons EM calorimetry  + X Inclusive jet cross section

7. Nick Hadley New Tools: charged particle tracking vertexing, mass reconstruction

8. Nick Hadley b   W   In Run I only one of these three muons would have been found!

9. Nick Hadley New tools: heavy flavor tagging bb cc  u,d,s ~ 55% at large p T

10. Nick Hadley New tools: new software and computing Full rewrite of online code, level 3 trigger and offline reconstruction in C++ 30 TB of disk + faster processing

11. Nick Hadley Physics Goals of Run II Standard-Model Physics  High-statistics study of the top quark (mass, cross section, rare decays, single top production) –Precision measurement of the W mass (< 50 MeV) –gauge boson pair production and tri-linear couplings b-physics  Targeted program including CP violation in B   K S QCD –Nucleon structure (parton distributions, diffraction) –Jets, photons, Drell-Yan, vector bosons+jets, heavy flavour production Beyond the Standard Model  Supersymmetry  Higgs searches  Technicolor, compositeness, new vector bosons, etc.

12. Nick Hadley B Physics Slides from Rick Jesik, Indiana University

13. Nick Hadley Run II B Physics Topics Spectroscopy –masses, Bc Lifetimes Branching ratios Rare decays CKM measurements

14. Nick Hadley B Physics in the 21st Century Experiments will confront the Standard Model interpretation of CP violation –A and have been measured to a few percent –unitarity condition:

15. Nick Hadley Sin2  Expectations for 2fb -1 –(S/B ~ 0.75) – e D 2 ~ 6.7 % For a time independent analysis: But, since most of the background is at small t’s, a time dependent analysis gives reduced error:  (sin2  ) ~ 0.07 And this is just in the first two years - 2 fb -1. We won’t stop there…...

16. Nick Hadley 2002 - exciting times BaBar and BELLE will have results from their first physics runs (not at design luminosity) –1 - 30 fb -1   (sin2  ~ 0.12 - 0.18 We (and CDF) should have 1.0 - 2.0 fb -1 analyzed –  (sin2  ~ 0.10 - 0.07 –Tevatron could beat the B-factories –everyone combined could signal new physics. The new detector puts us in a great position to do significant B physics measurements in Run II, but we have a lot of hard work ahead of us –getting the detector and triggers ready and working –reconstruction programs for B   J /  s  But hey, look what we did in Run I without an inner tracker.

17. Nick Hadley Standard Model in the New Millennium The Standard Model works at the 10 -3 level All observations are consistent with a single light SM Higgs m H > 95.2 GeV (LEP) and m H < 245 GeV (SM fit, Eidelman & Jegerlehner)

18. Nick Hadley

19. Conclusions The Tevatron is an immensely productive facility –  s from 3 GeV to 1 TeV Run II improves on Run I: –increased detector capabilities: Higher rate capabilities, Heavy quark tagging, charged particle tracking, better trigger and DAQ and computing –increased statistics (x20 or more) for standard model processes –potential discoveries Great Opportunities in top, W/Z, and B Physics –Also New Phenomena, Higgs, QCD - see tomorrow’s talk Please join us!