Fermilab TodayThursday, April 1, 2004  
Thursday, April 1
11:00 a.m. Special Joint Experimental Theoretical Physics Seminar - Curia II (NOTE LOCATION) Speaker: S. Kettell, Brookhaven National Laboratory
Title: First Results from AGS E949 on K-plus Decays to pi-plus, Neutrino and Anti-Neutrino
2:30 p.m. Theoretical Physics Seminar - Curia II
Speaker: H. Murayama, Institute for Advanced Study
Title: World Domination Plan by Anomaly Mediation
3:30 p.m. DIRECTOR'S COFFEE BREAK - 2nd Flr X-Over

Friday, April 2
9:00 a.m. Presentations to the Physics Advisory Committee - Curia II
3:30 p.m. DIRECTOR'S COFFEE BREAK - 2nd Flr X-Over
4:00 p.m. Joint Experimental Theoretical Physics Seminar - 1 West
Speaker: S. Rolli, Tufts University
Title: Recent Results on Top Quark, Electroweak and New Physics Searches from CDF

Thursday, April 1
Old Fashioned Tomato soup
Strip steak smothered w/onions w/your choice of one side $4.75
Lemon pepper catfish w/wild rice $3.50
Grilled chicken Caesar wrap served w/a homemade side salad $4.75
Double patty burger w/Thousand Island, shredded lettuce, pickles, onions and cheese w/fries or small soup $4.75
Homestyle tuna salad over fresh mixed greens $2.50
Hand rolled Hanabi sushi

Eurest Dining Center Weekly Menu
Chez Leon
Weather Partly Cloudy 48º/31º

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April Fool!
Don't believe everything you read in the 9:00 a.m. edition of Fermilab Today. Here is the real thing. (No kidding.)

Dorm Two Receives Updated Look
Dorm 2
The newly renovated Dorm 2 in Fermilab's Village. (Click on image for larger version.)
On January 1 of this year, residents of Dorm Two were temporarily relocated to clear the way for the building's first renovations in many years. Several outside contractors and a few Fermilab employees carried out the renovations, which were completed in mid-February. Dorm Two now boasts new floors and carpeting, freshly painted interior walls, new and renovated bathrooms and a new laundry center. Furniture in the common areas was changed, and last year the dorm was equipped with wireless Internet access.

"The residents really like the fresh look. They have given us very positive feedback," said the Housing Office's Linda Olson-Roach.

Dorm Two, originally five separate houses joined together to serve as offices, has 19 rooms and can hold up to 26 residents. Fermilab's seven dorms provide temporary and long-term housing for up to 115 laboratory users and employees with term appointments.

Accelerator Update
March 29 - March 31
- During this period Operations established one store. That store with an existing store, provided the experiments with approximately 35 hours and 14 minutes of luminosity to the experiments.
- Quadrupole problems trouble the Tevatron
- Switchyard Septa vacuum work begins

View the current accelerator update
View the Tevatron Luminosity Charts

In the News
From Nature, March 25, 2004
Partners fail to find common ground for fusion project
by Declan Butler
[PARIS] Iter means 'the way' in Latin but 'lost its way' might be a more apt description of the international fusion project that bears the name.

A technical assessment intended to break a stalemate over where to site the facility has itself ended in deadlock, with the six partners blaming each other for the lack of progress.

Negotiations over ITER's site have been stalled since a ministerial meeting in Washington last December, when the United States and South Korea backed the Japanese site at Rokkasho, and China and Russia supported the European Union's site at Cadarache in France. The US$5-billion project seeks to show that heating plasma in a magnetic field can produce fusion energy.
read more

Fermilab Result of the Week
DZero: Looking for New Physics With Photons
DZero Result of the Week
A three-dimensional representation of a DZero event with two photons (red arrows), an electron (purple arrow), and a significant misbalance of transverse energy (blue arrow). Large missing transverse energy is typically associated with production of neutrinos but could also signal the presence of particles responsible for cosmological dark matter. (Click on image for larger version.)
Today, more than thirty years after Supersymmetry was proposed, it remains one of the most attractive ways of extending the Standard Model and unifying the forces. It predicts that each known fermion has a boson superpartner; and each known boson, a fermion superpartner. In fact, these superparticles could be the dark matter that pervades the universe. Supersymmetry has not yet been observed and there are a variety of models that attempt to explain why this is so. One class of models predicts events with two isolated photons and large missing energy that could be observed at the Tevatron.

DZero Result of the Week
Yuri Gershtein (left) and Stilianos Kesisogou of Brown University performed the search for new physics in the diphoton channel. (Click on image for larger version.)
In Run II, the DZero collaboration is continuing the search for such events. The event in the figure has two photons with transverse energy of 69 and 27 GeV, an electron of 24 GeV and missing transverse energy of 63 GeV. While an interesting event, the collaboration must first understand what background processes could give rise to such an event. This could be an event with a W boson and two jets where the jets are misidentified as photons. The analysis team is now carefully estimating all Standard Model sources of background and is on the lookout for more unusual events in the growing data sample.

Using data acquired prior to the event pictured, the collaboration has set the best current limits on such processes. These models predict new particles called gauginos and DZero can say that if a charged gaugino exists, it must be at least 180 times more massive than a proton. Limits such as this give important constraints on our understanding of the universe.

DZero Result of the Week
Oleksiy Atramentov (left) of Iowa State and Dr. Yurii Maravin of Fermilab contributed to advanced photon identification. (Click on image for larger version.)

Result of the Week Archive

Tornado and Severe Storm Seminar
The Tornado and Severe Storm Seminar is this Saturday, April 3 at 1:00 p.m. and 7:00 p.m. Admission is free. Plan to arrive early to get seats.
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Women's Personal Protection & Self Defense Class
Due to its tremendous success, the Recreation Office will be offering another Women's Personal Protection & Self Defense Class. The next 6-week class will be from April 7 - May 12. Classes are held on Wednesday evenings from 5:30-7:30 PM. Classes are held at the Kuhn Barn in the village. The cost for this class is $35.00 and is open to all Fermilab women, their mothers and daughters. Registration deadline is April 2. No Recreation membership is needed.
more information

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