Indiana University High Energy Physics

and Astrophysics Seminars

2007-2008 Academic Year
 

Mondays, 4pm  Refreshments 3:30 pm
Swain West 238

Contact: Mike Berger and Mark Messier
 




 

Fall Semester 2007
 
 
 

 
 
 
Aug. 6:

Special
Seminar
10 am
Search for the Higgs Boson at CDF in the channel ZH -> l- l+ b bbar
Jonathon Efron
Ohio State University


 

 
 
 
Aug. 27: Measurement of the CP asymmetry in semileptonic B decays at CDF
Christopher Marino
U. of Illinois


 

 
 
 
Aug. 28:
Tuesday
Special
Seminar
10 am
Searching for Exotic States at BaBar
Sepehr Saremi
Stanford Linear Accelerator Center


 

 
 
 
Sep. 3:


 

 
 
 
Sep. 10: Organizational Meeting


 

 
 
 
Sep. 17: Topological Phases in Quantum Mechanics
Roman Buniy
Indiana U.


 

 
 
 
Sep. 24: Update on LHC, ATLAS, and TRT
Harold Ogren
Indiana U.


 

 
 
 
Oct. 1: Physics with taus at D0
Serban Protopopescu
BNL


 

 
 
 
Oct. 8: Evidence for Mixing in the D0-D0bar System from Belle
Alan Schwartz
U. Cincinnati

We review searches for mixing and CP violation in the D0-D0bar system, which, until recently, have eluded experimental observation. We present evidence for D0-D0bar mixing recently obtained by the Belle experiment using two different analysis methods: comparing the lifetimes of D0 decays to K-pi+, K+K- and pi+pi- final states, and performing a time-dependent Dalitz-plot analysis of the self-conjugate final state K0 pi+pi-. These analyses yield measurements of the mixing parameters Delta m and Delta gamma; the results obtained differ significantly from zero. These results are then combined with other D0 mixing measurements to search for CP violation in the D0-D0bar system.


 

 
 
 
Oct. 15:


 

 
 
 
Oct. 22:


 

 
 
 
Oct. 29: State of the art detectors and searches for new particles
Daniela Bortoletto
Purdue/CDF

The CDF silicon detector is playing a critical role in the searches for the standard model Higgs. The latest results for the search for the standard model Higgs produced in association with a W and a Z boson at CDF are presented. The results include about 1 to 1.7 fb-1 of data collected by CDF in run II of the Tevatron. I will then discuss the challenges of tracking at the LHC and the importance of pixel detectors. The CMS hybrid pixel detector is located at the core of the CMS tracker and will contribute significantly to track and vertex reconstruction. The detector is subdivided into a three layer barrel, and two end-cap disks on either side of the interaction region. The system operating in the 25 ns beam crossing time of the LHC must be radiation hard, low mass, and robust. The construction of the barrel modules and the forward disks has started after extensive R&D. I will presnet the status of the project.


 

 
 
 
Nov. 5: Neutrino Oscillations, $\theta_{13}$, and the Daya Bay Experiment
Jim Napolitano
RPI

We now know that neutrinos have mass, and that their weak eigenstates mix. However, the pattern of lepton masses and mixing angles is entirely different from that for quarks. For example, the first and second generations are almost completely mixed, as are the second and third. The first and third generations, though, have a mixing angle that is consistent with zero, based on existing measurements. I will briefly review the status of neutrino oscillation measurements and summarize our current knowledge of masses and mixing angles. I will then describe a China/US collaboration mounting an experiment at the Daya Bay nuclear reactor complex, north of Hong Kong. Our goal is to either measure, or set a limit on, the "last" neutrino mixing angle "$\theta_{13}$" at a level of 1%.


 

 
 
 
Nov. 12:


 

 
 
 
Nov. 19: THANKSGIVING


 


 

 
 
 
Nov. 26: Lifetime of a Beautiful and Charming Meson : Semileptonic Bc Decay at D-Zero
Leah Welty-Rieger
Indiana U.


 

 
 
 
Dec. 3:


 

 
 
 
Dec. 10: Post Thesis up date on Measurement of the CP asymmetry in semileptonic B decays at CDF
Chris Marino
U. of Illinois