Thursday, Feb. 6, 2014

Have a safe day!

Thursday, Feb. 6

9 a.m.
P5 Virtual Town Hall Meeting - One West

10:30 a.m.
All-Hands Meeting - Auditorium

Academic Lecture Series (NOTE TIME) - One West
Speaker: Boris Kayser, Fermilab
Title: Do Neutrinos Break the Rules?

2:30 p.m.
Theoretical Physics Seminar - Curia II
Speaker: Ran Zhou, Fermilab
Title: Lattice QCD Calculation of the B to Kll Decay Form Factors

3:30 p.m.

4 p.m.
Accelerator Physics and Technology Seminar (NOTE DATE, LOCATION) - Curia II
Speaker: Dan Bollinger, Fermilab
Title: 35 Years of H- Ions at Fermilab

4 p.m.
Joint Experimental-Theoretical Physics Seminar (NOTE DATE) - One West
Speaker: Andreas Jung, Fermilab
Title: Top Quark Differential Cross Sections at DZero

Friday, Feb. 7

3:30 p.m.

4 p.m.
Joint Experimental-Theoretical Physics Seminar - One West
Speaker: Brandon Eberly, University of Pittsburgh
Title: Charged-Current Charged-Pion Production at MINERvA

8 p.m.
Fermilab Lecture Series - Auditorium
Speaker: John Carlstrom, University of Chicago
Title: What Do Scientists Know About The Big Bang?
Tickets: $7

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

Ongoing and upcoming conferences at Fermilab


Take Five

Weather Cold

Extended forecast
Weather at Fermilab

Current Security Status

Secon Level 3

Current Flag Status

Flags at full staff

Wilson Hall Cafe

Thursday, Feb. 6

- Breakfast: Canadian bacon, egg and cheese Texas toast
- Breakfast: corned-beef hash and eggs
- Carolina pulled-pork sandwich
- Mediterranean-style ziti with asparagus
- Honey baked ham
- Buffalo chicken tender wrap
- Grilled- or crispy-chicken Caesar salad
- White-chicken chili
- Chef's choice soup

Wilson Hall Cafe menu

Chez Leon

Friday, Feb. 7
- Spinach salad with cranberries and pine nuts
- Flank steak with caramelized onions and balsamic glaze
- Walnut-crusted potato and blue cheese cakes
- Brussels sprouts
- Profiteroles au chocolat

Wednesday, Feb. 12
- Cuban black bean patties
- Pineapple rice
- Coconut tres leches cake

Chez Leon menu
Call x3524 to make your reservation.


Fermilab Today

Director's Corner

Frontier Science Result

Physics in a Nutshell

Tip of the Week

User University Profiles

Related content


Fermilab Today
is online at:

Send comments and suggestions to:

Visit the Fermilab
home page

Unsubscribe from Fermilab Today

Special Announcement

All-hands meeting - today in Ramsey Auditorium

Please plan to attend an all-hands meeting today at 10:30 a.m. in Ramsey Auditorium. Topics will include the laboratory's goals and priorities, the FY14 budget, employee feedback and the Fermilab Campus Master Plan. The meeting will be streamed live.

In Brief

P5 virtual town hall meeting - today in One West

The P5 committee will hold its second virtual town hall meeting today from 9-10:30 a.m. Central time. Scientists at Fermilab who wish to participate are invited to join the meeting from One West.

If you wish to speak from One West or plan to participate from off site, be sure to register.


Working with the elements: "Creativity is not Created" comes to Fermilab Art Gallery

Chicago artist Jay Strommen works in glass and clay. His work is currently on display in the Fermilab Art Gallery.

For years, Chicago artist Jay Strommen has molded, baked and grinded clay to combine the four elements — earth, air, water and fire — in new ways. The resulting ceramic objects are part of an evolution not only in his own artistic development, he says, but with roots in techniques used centuries ago.

The latest exhibit at the Fermilab Art Gallery, "Creativity is not Created," features moments in that evolution that easily could be passed over but that invite close inspection, Strommen says. An artist reception will be held on Friday at 5 p.m. in the gallery.

The exhibit showcases studies on paper for sculptural pieces and works in clay and glass that Strommen developed when he was exploring various kiln techniques.

Strommen's method for firing clay has its foundation in 16th-century Japanese kiln technology. While the people of that culture created their ceramics for utility — gathering, storage, eating — today their vessels have aesthetic value.

"They were useful objects," Strommen said. "Now they're art." That simple statement, he says, reminds us that creativity does not arise out of thin air, but is the result of labor and practice. Uncovering the creativity that goes into the workmanship lies with the viewer.

"I'm framing bits and pieces of tradition that otherwise would have been overlooked," Strommen said.

One exhibit piece features a pallet piled with thousands of clay tokens, each made by hand, each different. The small, palm-sized formations could be dismissed easily as so many one-offs, but the viewer is instead invited to appreciate both the craft and the industry that went into making each one. He or she can even take one home.

In the same spirit of drawing the viewer closely to the art, Strommen has inscribed messages on the reverse sides of some of his gleaming glass-and-clay tablets. Ultimately, that close inspection could bring the viewer back to the elements that lie at the foundation of the interaction.

"I'm collaborating with nature and tradition," he said. "I'm a catalyst that's bringing the elements together in a framed environment."

Photo of the Day

Booster in winter

Snow covers the Cross Gallery and the Booster ring. Photo: Amanda Solliday
In the News

Big chill sets in as RHIC physics heats up

From Brookhaven National Laboratory Newsroom, Jan. 29, 2014

UPTON, NY — If you think it's been cold outside this winter, that's nothing compared to the deep freeze setting in at the Relativistic Heavy Ion Collider (RHIC), the early-universe-recreating "atom smasher" at the U.S. Department of Energy's Brookhaven National Laboratory. Brookhaven's accelerator physicists have begun pumping liquid helium into RHIC's 1,740 superconducting magnets to chill them to near absolute zero (-273 degrees Celsius — the coldest anything can get) in preparation for the collider's next physics run.

Read more

In the News

Accelerating science and technology at the Cockcroft Institute

From Physics World, Jan. 28, 2014

Particle accelerators are used by just about every branch of science and technology these days: from chemists studying molecules using X-ray free-electron lasers to doctors treating eye cancer using beams of protons. And, of course, there are the particle physicists, who recently used the Large Hadron Collider at CERN to find the Higgs boson.

All of these applications, and many more, are the focus of the UK's Cockcroft Institute of Accelerator Science and Technology, which is located at Daresbury Laboratory in the Cheshire countryside, half way between Liverpool and Manchester.

In this video, Cockcroft Institute co-founder and its first director, John Dainton, explains why researchers in the north of England banded together to create the facility, which first opened its doors in 2006.

Read more

Frontier Science Result: DZero

Seeing double in proton-antiproton collisions

Protons and antiprotons are composite objects, formed from a constantly changing mixture of quarks and gluons (partons). In a small fraction of collisions there can be more than one parton-parton interaction. Measuring the rate of such double interactions provides important information about the structure of the proton.

Disponible en español

What happens when protons and antiprotons collide? To answer this question, we first need to consider what we mean by a particle collision. The proton is not fundamental: It contains an evolving mixture of quarks, antiquarks and gluons. These quarks and gluons are collectively called partons and are held together by the QCD interaction, like marbles in a bag. While the marble metaphor is flawed in many ways, like most real-world imaginings of quantum behavior, it provides a helpful analogy to consider the various possible outcomes of particle collisions, so let's go with it.

The most common outcome of a proton-antiproton collision is that the two hadrons simply break apart — the two bags of marbles break — weakly scattering the internal quarks and gluons. This is called a "soft" interaction. The collisions that we are usually interested in are those in which a parton from the proton interacts directly with a parton from the antiproton in a "hard" scattering process that can produce new particles such as Higgs, W and Z bosons and other quarks. In our analogy, this would be two marbles, one from each bag, hitting each other and breaking apart.

Occasionally, however, there can be more than one hard interaction per collision: In other words, two separate pairs of marbles smash together or two pairs of partons interact. These so-called double-parton interactions are much rarer than the usual single parton case, and their prevalence provides important information on the spatial distribution and transverse momentum of the quarks and gluons inside the proton. This week the DZero collaboration will release a new publication, measuring the rate of double-parton interactions using events with three quarks and a photon in the final state.

The measurement uses a clever feature of the data to improve the precision: Sometimes two single-parton interactions can occur in separate proton-antiproton collisions. In our analogy, two bags of marbles collide at point A, and another two collide at point B. By comparing the number of selected events with one versus two separate collision points, the ratio of single- to double-parton interactions can be extracted with minimal reliance on the details of the detector efficiency. Furthermore, particular characteristics of the double-parton events allow them to be identified by their experimental signature and discriminated from the main backgrounds.

The final results are expressed in terms of an effective cross section (the transverse area in the (anti)proton occupied by the interacting partons) and are the most precise ever made. In addition, for the first time the measurement is also performed separately for events where one of the partons was a heavy quark (beauty or charm). Interestingly, the measurement indicates that the probability of a double-parton interaction is the same regardless of the flavor of the initial parton: Unlike most of us, parton interactions don't seem to be influenced by charm and beauty!

Mark Williams

These DZero members all made significant contributions to this publication.
The DZero collaboration continues to thrive more than two years after the final Tevatron collisions took place. This week sees the coming together of scientists from around the world at Fermilab for the winter DZero collaboration meeting. The aim is to push forward a range of measurements toward publication, with more than 20 different analyses being presented for discussion.

Today's New Announcements

Yoga registration due today

Strength Training registration due Feb. 7

Barn Dance - Feb. 9

Kyuki Do registration due Feb. 10

All-hands meeting - today

P5 virtual town hall meeting - today

Free introductory yoga class - today

Artist reception for Jay Strommen - Feb. 7

Budker Seminar - Feb. 10

Family Science Days in Chicago - Feb. 15-16

Garden Club spring meeting - Feb. 20

URA Visiting Scholars Program deadline - Feb. 24

Interaction Management course: March 5, 12 and 19

Performance Review course: March 26 or 27

Interpersonal Communication Skills - Apr. 16

Fermi Singers invites new members

Strength Training by Bod Squad

Indoor soccer

Scottish country dancing meets Tuesday evenings at Kuhn Barn

International folk dancing meets Thursday evenings at Kuhn Barn

10 percent employee discount at North Aurora Dental Associates