Fermilab TodayThursday, March 18, 2004  
Thursday, March 18
2:30 p.m. Theoretical Physics Seminar - Curia II
Speaker: U. Haisch, Fermilab
Title: Theory of Rare Semileptonic B Decays
3:30 p.m. DIRECTOR'S COFFEE BREAK - 2nd Flr X-Over

Friday, March 19
3:30 p.m. Wine & Cheese - 2nd Flr X-Over
4:00 p.m. Joint Experimental Theoretical Physics Seminar - 1 West
Speaker: G. Gomez-Ceballos, Massachusetts Institute of Technology
Title: Status of Bottom, Charm, and QCD Physics at CDF

Thursday, March 18
Old Fashioned Tomato soup
Honey glazed pork chop w/two market sides $4.75
Baked cod Provencale w/orzo pasta $3.50
Assorted gourmet sandwiches and Panini $4.75
Double bacon cheese burger w/soup or fries $4.75
Rustic chicken salad over wild greens w/fresh fruit $3.75

Eurest Dining Center Weekly Menu
Chez Leon
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Fermilab Recognized for Participating in the Toys for Tots Program
Charisse Malo
Charisse Malo with the
certificate of appreciation
(Click on image
for larger version.)
Last fall, Charisse Malo, of the Accelerator Division, conducted Fermilab's first toy drive for the U.S. Marine Corps Reserve Toys for Tots Program. Fermilab recently received a certificate of appreciation for donating 193 toys to the program. All of the toys that Malo collected were distributed in DuPage County. The Toys for Tots Program collected approximately 31,000 toys in DuPage County this year. "We spent quite a few weekends sorting and counting the toys," said Malo, who recruited her two children to help. According to Malo, hot items this year included easy bake ovens, binoculars and stuffed animals. "It was a great experience," she said. "We'll do this every year." Malo plans to start collecting toys for the 2004 toy drive around Thanksgiving. If you are interested in volunteering, contact Charisse Malo.

Accelerator Update
March 15 - March 17
- The Fermi accelerator complex is in shutdown
- Report includes partial list of shutdown work

View the current accelerator update
View the Tevatron Luminosity Charts

In the News
FYI: AIP Bulletin of Science Policy News, March 15, 2004
Required Reading: Science Committee Chairman Boehlert on Science Funding
House Science Committee Chairman Sherwood Boehlert (R-NY) was the keynote speaker today at a workshop for the future National Synchrotron Light Source at Brookhaven National Laboratory. Boehlert's remarks at this workshop, as they are at hearings, were to the point, and concerned a constant problem in Washington: money. This year that problem is greater than it has been in a long time, so Boehlert's words are particularly important. Selections follow:

"But one doesn't need a degree in physics to understand the value of a scientific tool that furthers human understanding of matter while answering practical questions in materials science and biology; a tool that is of use to both academic and industrial researchers; a tool that attracts the best researchers from throughout the world. The U.S. simply must invest to upgrade its capabilities in this area, building on the expertise that Brookhaven and the researchers who use its facilities have developed over the last few decades.
read more

Fermilab Result of the Week
A Glance at Glancing Collisions
DZero Result of the Week
The rate of elastic collisions as a function of angle (|t|, momentum transfer, is proportional to the square of the scattering angle). The DZero points are normalized to the E710 points and cover a new angular region. A theoretical prediction from Block et. al. describes the data well. (Click on image for larger version.)
In about 25% of their collisions protons and anti-protons exchange only glancing blows (elastic scattering). These are difficult to measure because the resulting particles proceed at very small angles down the beam pipe. For Run II DZero has installed the Forward Proton Detector (FPD) to measure events in which either the proton, anti-proton, or both,
Jorge Barreto
Jorge Barreto of LAFEX
Brazil worked on this
remain intact (which is typical of these glancing collisions).

The FPD was built under the leadership of Andrew Brandt, of University of Texas, Arlington, and Alberto Santoro, UERJ/Brazil, in a U.S./Brazil collaborative international project. The detector consists of "Roman Pots," which are remotely controlled and can be moved close to the beam (within a few milimeters) during stable beam conditions and retracted
Jorge Molina
Jorge Molina of LAFEX
Brazil worked on this
otherwise. These pots contain particle detectors that record the passage of the protons and antiprotons and provide information for reconstruction of these glancing collisions.

DZero has now made its first measurement using these new detectors. It has measured the rate of glancing collisions as a function of the angle of the collision in a region of angle never before measured at Tevatron energies, giving insight into the size and structure of the proton. As shown in the figure, our first data is well described by theory (the blue curve). This first diffractive physics result from DZero will be shown at major conferences this spring and we anticipate many more interesting results in the future, using this new capability of the DZero experiment.

(Left to right) Gilvan Alves (LAFEX Brazil) and Michael Strang (UT Arlington) worked on the Roman Pots that made this analysis possible. (Click on photo for larger version.)

Result of the Week Archive

New Book Purchase Suggestion Lists
New Book purchase suggestion lists for the week of March 16 are now available online. These include Majors book lists in four subject areas. There is also an Amazon suggestion list in the form of a shopping cart, viewable by entering the password "library."

Missing Journals
The Fermilab Library is asking for your help with missing journal issues. Details are available online.

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