Fermilab TodayThursday, September 25, 2003  
Calendar
Thursday, September 25
2:30 pm Theoretical Physics Seminar - Curia II
Speaker: M. Jamin, Heidelberg University
Title: A Novel Route to Vus
3:30 pm Director's Coffee Break - 2nd Flr X-Over
THERE WILL BE NO ACCELERATOR PHYSICS AND TECHNOLOGY SEMINAR TODAY

Friday, September 26
3:30 pm Wine & Cheese - 2nd Flr X-Over
4:00 pm Joint Experimental Theoretical Physics Seminar - 1 West
Speaker: M. Ramsey-Musolf, California Institute of Technology/U. Connecticut
Title: Sub-Z SUSY
8:00 pm Fermilab International Film Society - Auditorium
Tickets: Adults $4
Title: One Day in September

Cafeteria
Thursday, September 25
Wild mushroom bisque
Tuna casserole $3.50
Roasted pork loin $4.75
Turkey and Swiss on a pretzel roll $4.75
Jack crab quesadilla $4.75
Sushi

Eurest Dining Center Weekly Menu
Chez Leon
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WeatherSunny 62º/42º

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Local Junior High Students Kick Off Fermilab's Season for Field Trips in the Prairie
Students from Jefferson Junior High in Naperville study organisms living in water near the Lederman Science Center.
Students from Jefferson Junior High in Naperville study organisms living in water near the Lederman Science Center.
Yesterday an army of 7th graders invaded the terrain surrounding Wilson Hall, looking for tadpoles and examining prairie insects. This group, led by Karen Doughty of Jefferson Junior High in Naperville, spent half the morning studying organisms living in the water near the Lederman Science Center. Their explorations fit into a larger "ecological interactions unit" that involves a week of preparations and ends with group presentations in science classes and reaction journals in language arts.

Fermilab hosts local school groups five days a week, and Boy Scouts on weekends. (Teachers must attend a multi-day Fermilab workshop before bringing their students.) The activities, ranging in focus from bison to particle physics, depend on the season and the age of the kids. The trips are so popular that some schools book almost a year in advance. Last year, 7,000 students came to study the prairie in September and October alone. Doughty says, "They absolutely love it. Rain or shine we come. There's nothing like field study."

Accelerator Update
September 22 - September 24
- Main Injector vacuum causes problems for the Recycler
- TeV Hydrostatic Level System (HLS) installation

View the current accelerator update
View the Tevatron Luminosity Charts

In the News
From Internet News, September 23, 2003
Berners-Lee Talks Up Semantic Web
By Thor Olavsrud
Tim Berners-Lee (Photo courtesy CERN)
Tim Berners-Lee (Photo courtesy CERN)
What if the World Wide Web were one giant database, linking both human readable documents and machine readable data in a way useful to both mankind and machine?

It would be the future of the Web espoused by Tim Berners-Lee, father of the World Wide Web and director of the World Wide Web Consortium (W3C). Since Berners-Lee and a few other leaders at the W3C first mentioned it in May 2001, that vision has increasingly become a leading focus of the W3C's work. They call it the Semantic Web.
read more

Fermilab Result of the Week
DZero: Hunting for Higgs Has Begun
Higgs to WW production rate excluded with the current DZero data (and LEP experiments), along with the expectations from various models
Higgs to WW production
rate excluded with the
current DZero data (blue)
and LEP experiments (red),
along with the expectations
from various models
One of the most fundamental questions addressed by particle physicists today is the origin of mass. Theory holds that particles acquire mass by interacting with a field which permeates space. The unstable massive Higgs particle associated with this field can be produced in particle collisions at the Tevatron.

If the mass of the Higgs particle is in the range of 135 to 200 GeV, it
Suyong Choi is responsible for the reconstruction software that the scientists use to analyze their results.
Postdoc Suyong Choi
(UC Riverside)
is responsible for the
reconstruction software
that all the scientists
use to analyze
their results.
will predominantly decay to W pairs. We observe the W particles from their decay into charged electron, muons, and neutrinos. DZero has used Tevatron Run II data to search for the Higgs in this decay mode. So far, no evidence for the elusive particle has been found. The plot shows the DZero limits on the production rate of the Higgs as a function of mass (blue) and compares that to the limits set at LEP (red) and the predictions of various models.

Highlighting the international spirit of today's high energy physics experiments, most of this analysis work was conducted in Germany at the Universities of Munich and Mainz.
Graduate student Johannes Elmsheuser is working on Higgs searches. Graduate student Marc Hohlfeld is working on Higgs searches
Graduate students Johannes Elmsheuser, Univ. Munich (left) and Marc Hohlfeld, Univ. Mainz are working on Higgs searches.

Announcements
International Workshop on Future Hadron Colliders
Fermilab invites scientists to participate in the International Workshop on Future Hadron Colliders, which will be held at Fermilab on October 16-18, 2003. There is no registration fee for attending this meeting.
Detailed program and online registration

Strength Training Classes
Join the strength training classes at the recreation facility. Tuesdays and Thursdays 5:30 p.m.-6:30 p.m.
- October 14-November 6 - four week class for $32.00
- November 13-December 18 - five week class for $40.00
more information

Fermilab Today