Friday, March 30, 2012

Have a safe day!

Friday, March 30
3:30 p.m.
4 p.m.
Joint Experiment-Theoretical Physics Seminar - One West
Speaker: David Mietlicki, University of Michigan
Title: Top Pair Forward-Backward Asymmetry with the Full CDF Sample

Monday, April 2
2:30 p.m.
Particle Astrophysics Seminar - One West
Speaker: Louie Strigari, Stanford University
Title: Dark Matter Properties from the Faintest Galaxies
3:30 p.m.
4 p.m.
All Experimenters' Meeting - Curia II
Special Topic: Revised Mu2e Proton Delivery Scheme; US-Japan Collaboration: Monolithic Active Pixel Sensors in SOI Process

Click here for NALCAL,
a weekly calendar with links to additional information.

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Secon Level 3

Wilson Hall Cafe

Friday, March 30

- Breakfast: Chorizo burrito
- Smart cuisine: Chunky vegetable soup w/ orzo
- Buffalo chicken wings
- Cajun breaded catfish
- Smart cuisine: Teriyaki pork stir-fry
- Honey mustard ham & Swiss panini
- Assorted sliced pizza
- Smart cuisine: Carved turkey
Wilson Hall Cafe Menu

Chez Leon

Friday, March 30

Chez Leon Menu
Call x3524 to make your reservation.


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Fermilab's MicroBooNE begins detector construction

Fermilab physicist Jen Raaf manages the assembly process of pieces that will make the MicroBooNE detector. Photo: Reidar Hahn

Fermilab's neutrino experiment MicroBooNE is beginning the full construction phase for the detector, after DOE announced the official Critical Decision 3b approval on March 29.

"This is a significant milestone for the MicroBooNE project," said project manager Gina Rameika, noting that the next step in the DOE CD process will be CD 4, which is approval to start operations, planned for mid-2014.

In the last phase of the project, the MicroBooNE collaboration began acquiring precision-made parts for the detector from institutions including Brookhaven National Laboratory, Syracuse University and Yale University. Soon the team will begin assembling those pieces.

The inner time projection chamber, which will provide three-dimensional reconstructions of neutrino events, will soon begin assembly within the DZero building, a former experiment hall for the Tevatron. When this is finished, the 33-foot-long TPC will slide into a cryostat-cooling chamber and move to its new housing at the Liquid Argon Test Facility, currently under construction at Fermilab. Once there, scientists will begin tracking neutrinos with liquid argon, allowing high sensitivity for the experiment.

"We'll push the TPC into the cryostat, load it onto a truck and drive it really, really slowly to LArTF," said Jen Raaf, the physicist managing the assembly process. "It's like driving a school bus onto a wide-load tanker truck."

Read more

—Brad Hooker

BNL Press Release

Supercomputing the difference between matter and antimatter

Editor's note: This new result was made possible by processing power from Fermilab's Ds computing cluster, part of the USQCD Collaboration's computing resources.

An international collaboration of scientists has reported a landmark calculation of the decay process of a kaon into two pions, using breakthrough techniques on some of the world's fastest supercomputers. This is the same subatomic particle decay explored in a 1964 Nobel Prize-winning experiment performed at the U.S. Department of Energy's Brookhaven National Laboratory (BNL), which revealed the first experimental evidence of charge-parity (CP) violation - a lack of symmetry between particles and their corresponding antiparticles that may hold the answer to the question "Why are we made of matter and not antimatter?"

The new research - reported online in Physical Review Letters March 30, 2012 - helps nail down the exact process of kaon decay, and is also inspiring the development of a new generation of supercomputers that will allow the next step in this research.

To read the full press release, click here.

In Brief

Now accepting 2012 Alvin Tollestrup Award nominations

At each year's Users' meeting, Fermilab pioneer Alvin Tollestrup presents an outstanding postdoc with his namesake award. Nominations for that award will be accepted until Friday, April 13.

All Ph.D. researchers in non-tenure-track or equivalent positions at Fermilab or Universities Research Association-member institutions, or institutions collaborating in Fermilab projects are eligible. Postdocs must be within six years of the receipt of their Ph.D. Qualified work must be in conjunction with a Fermilab experiment or project or under the auspices of the Fermilab Theory or Astrophysics Groups.

Candidates may nominate themselves for the award. Applications must include: a CV, list of publications and invited talks, a written statement (of no more than five pages) from the candidate describing the research, and no more than two letters of support from scientists familiar with the work.

Award winners receive a certificate of recognition and a check for $3,500 from URA. Nomination materials should be emailed as pdf or plain text documents by April 13.

CMS Result

The Higgs boson quilt

Physicists stitched together the various pieces of analysis to yield a combined measurement.

The search for the Higgs boson is the current flagship analysis for the CMS experiment. The Higgs boson is the missing bit of the Standard Model and finding out whether it exists or not will be a ringing endorsement of the LHC research program. The question should be resolved later this year.

While the data taken in 2011 was not enough to be the final word on the Higgs boson, it was enough to restrict its hiding places to a few narrow energy ranges. At the recent Moriond conference, CMS presented their Higgs result, which has been submitted for publication.

Searching for the Higgs boson is a tricky business. While we don't know if it exists, there are strict theoretical predictions about the myriad of possible decay patterns. While the Higgs boson would preferentially decay into the heaviest particles consistent with conserving energy, there is the possibility that it would decay into two massless photon. Although this rare decay would occur only about 0.1 percent of the time, the signature is obvious. Also, the detector is optimized to measure photons.

Once the analyses searching for various decay patterns are complete, they must be combined to give maximum impact. Given the amount of data now available, no single analysis is adequate to discover the Higgs boson. The combination begins to approach the sensitivity needed.

When the various signals were properly combined, CMS scientists didn't find the Higgs boson, but the collaboration was able to say that if it existed, it is most likely to be found in the range of 115-127 GeV. There was also a tantalizing hint at 124 GeV. Needless to say, this possible signal will receive extra scrutiny as the LHC starts to collide beams again in just a few days. It is highly likely that 2012 will be the year when the Higgs conundrum is resolved.

Don Lincoln

These analyzers contributed by combining together dozens of Higgs analyses, which involved the work of many hundred physicists.
CMS made impressive progress in its studies of the Higgs boson's mass due to the exceptional performance by the LHC and the professionals who operate it. CMS thanks them for their pivotal contribution to all of our measurements.

English country dancing - April 1

FRA scholarship applications due April 2

Martial arts classes - April 3

Crown Financial Ministries biblical financial principles video series - April 10

Chicago Fire Soccer - April 15 and May 12

Python Programming class - April 16-18

Changarro restaurant offers 15 percent discount to employees

Monday night golf league

Scottish country dancing meets Tuesday evenings in Kuhn Village Barn

International folk dancing meets Thursday evenings in Kuhn Village Barn

Argentine tango classes at Fermilab

Fermilab Golf League

2012 CTEQ-Fermilab school on QCD and electroweak phenomenology

Abri Credit Union is now selling books of stamps

Fermilab Management Practices courses are now available for registration

Indoor soccer

Atrium construction updates

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