Thursday, June 24|
THERE WILL BE NO THEORETICAL PHYSICS SEMINAR THIS WEEK
3:30 p.m. DIRECTOR'S COFFEE BREAK - 2nd Flr X-Over
THERE WILL BE NO ACCELERATOR PHYSICS AND TECHNOLOGY
Friday, June 25
3:30 p.m. DIRECTOR'S COFFEE BREAK - 2nd Flr X-Over
4:00 p.m. Joint Experimental Theoretical Physics Seminar (NOTE LOCATION) - Auditorium
(In association with the Symposium "Lattice 2004")
Speaker: V. Lubicz, Universita di Roma III
Title: The Role of Lattice QCD in Flavor Physics
4:45 p.m Speaker: I. Shipsey, Purdue University
Title: An Experimenter's View of Lattice QCD
5:15 p.m. Speaker: M. Wingate, University of Washington
Title: The Status of Lattice QCD Calculations for Flavor Physics
Thursday, June 24|
Santa Fe Black Bean Soup
Marinara Meatball Sub $4.75
Butter Crumb Baked Fish $4.75
Pork Chop Teriyaki $3.75
Baked Ham & Swiss on a Ciabatta Roll $4.75
Sausage & Sweet Onion Strombolis $2.75
Crispy Fried Chicken Ranch Salad $4.75
Wilson Hall Cafe Menu
New Peak Luminosity Record|
At 11:36 a.m. on Tuesday, the Tevatron hit a new peak luminosity of
8.5 E31. The Tevatron achieved the last record of 8.3 E31 early Monday morning.
Property Office Accounts for 100 Percent of Fermilab's Sensitive Assets|
Members of the Property Office who conducted the sensitive
item inventory (left to right): Sylvia
Trevino, Patty Cameron, Jack Kelly, and Dale Wilderspin (Click on image for larger version.)|
This year's fiscal inventory accounted for all of Fermilab's sensitive assets -
a major achievement for the lab. Nearly 8,000 sensitive assets worth $16 million,
such as computers, laser printers, and palm pilots, were accounted for by 1450
employees this fiscal year.
"Keeping track of sensitive equipment is everybody's responsibility, from the
directorate on down," said Jack Kelly of Property and Inventory Control.
"In most cases, computers are stolen from cubicles or unlocked offices.
It's very important that employees contact security and the property
office immediately if they can't find an asset."
The Department of Energy requires that 98% of Fermilab's sensitive assets
are recovered every fiscal year. In 2002 and 2003, the value of lost items
was less than .005% of the total cost of sensitive assets, easily meeting
this quota. "We've been putting a lot of effort into the management of
government property in the last few years, and it's paying off,"
said Dave Carlson, head of the Business Services Section. "This was
our most successful sensitive item inventory ever."
Fermilab Arts Series Presents Muriel Anderson's All Star Guitar Night|
Tickets Still Available!
The Fermilab Arts Series presents "Muriel Anderson's All Star Guitar
Night" on Saturday, June 26 at 8:00 p.m. in Ramsey Auditorium. Widely respected as the premier woman fingerstyle guitarist on the scene
today, Muriel Anderson is the first woman to have won the National
Fingerpicking Guitar Championship. A student of both Chet Atkins and
Christopher Parkening, her virtuosic guitar work ranges from Spanish
flamenco and Japanese Koto music to the Beatles, and to her own adventurous
compositions, mixed with a gentle sense of humor. Muriel is the founder of
the Muriel Anderson's All Star Guitar Night and the Music for Life Alliance
Charity, which provides musical instruments to young people.
June 21 - June 23|
- During this 48 hour period Operations established one store that,
added to an existing store, provided the experiments with approximately
44 hours and 40 minutes of luminosity.
- Tevatron expert made changes to the collimator sequencer that reduced
the problems with the colliding beam that has been troubling CDF and
- Store 3688 set a NEW RECORD with an initial luminosity of 84.78E30.
- The Recycler lost its stash due to a Corrector magnet tripping off
View the current accelerator update
View the Tevatron Luminosity Charts
From Nature Magazine, June 24, 2004|
Requiem for a supercollider
by Geoff Brumfiel
"Gentlemen, the Chinese have got the Higgs boson."
So begins A Hole in Texas, Herman Wouk's latest novel, which revolves,
rather improbably, around the world of high-energy physics. The 88-year-old
Pulitzer Prize-winning author of War and Remembrance and The Winds of War is
famous for his depictions of wars and the men who fight them, but his twelfth
novel concerns exotic particles and the men (and women) who discover them.
The result is an amusing and at times arcane yarn that will make a good summer
read for scientists — especially those who have had a frustrating time explaining
their work to governments or the popular press.
SELEX Announces New Member of the Charm-Strange Meson Family|
The distribution of the Ds+ eta0
combined mass for all candidates in the data sample including anti-particle
combinations (Ds- eta0). There is a clear peak
at a mass of 2635 MeV/2 with a very high statistical significance
(more than 7 standard deviations). The width of this peak is
consistent with what is expected from the resolution of the detector. (Click on
image for larger version.)|
The SELEX experiment recently announced a new member of the charm-strange meson
family called the Ds meson, which has already caused a lot of excitement
in the last year. In 2003, the e+e- collider experiments
found two types of Ds mesons that had been expected by the theorists,
but their masses were more than inhibiting the state's decay and causing
narrow mass peaks. The SELEX state is also narrow, but heavy. The new state,
seen in two different decay channels also appears to be inhibited. Some unknown
mechanism favors the rare decay mode Ds+eta
over the expected D0K+ channel and conspires to keep the
SELEX is a 600 GeV fixed target charmed experiment in a sigma-hyperon beam
which studies the production and decay properties of charmed particles produced
in the forward direction (xf> 0.1). In the 1996-97 fixed target
running period it recorded 1 billion events having evidence of secondary
vertices from 15 billion total interactions.
The new state was found in the Dseta0 channel by combining
a well identified Ds meson with photon pairs that made eta0
candidates. A clear peak of 45 ± 9.3 events is seen. A corresponding mass peak
is also seen in the D0K+ channel at the same mass giving
a combined mass of 2632.6 ± 1.6 MeV. The state's width is consistent
with detector resolution, limiting the width to < 17 MeV. The Ds--> eta
decay rate is six times the D0K+ rate despite having
half the phase space.
SELEX reports these peaks as the first observations of another narrow,
high-mass Ds state decaying strongly to a ground state charm
plus a pseudo scalar meson. Both the very narrow width and the relative
rates of these two decay modes are unusual. If this state belongs to the
usual heavy-light family, there should be a partner within 40
MeV that decays to D*K or Ds*eta0.
To place this new state in the charm-strange meson system will require careful
study from a number of experiments in the future.
Evdokimov of ITEP presenting the SELEX results at the Wine& Cheese talk last Friday. (Click on image for larger version.)|
Result of the Week Archive
Fermilab Ultimate Frisbee Club|
Annual Fermilab-Argonne Tournament Today
The Fermilab Ultimate Frisbee Club competes against Argonne in its
annual tournament at Surrey Ridge Athletic Complex in Lisle today at 6:00 p.m.
Contact Kip Bishofberger for more information.
Muscle Toning Class
The next Muscle Toning Class will be held from July 6 through July 29.
This 4 week class is $32.00. Classes are held on Tuesday
and Thursday in the Recreation Facility exercise room. Registration deadline is Friday, July 2. You must be a current facility
member to participate. Registration can be made in the Recreation
Office, by mail (registration form found on the Recreation
webpage) or by phone using a credit card.
Dave Herzog’s Marionette Show
The Recreation Office presents the
Dave Herzog’s Marionette Show will be held in the upper level of Kuhn Barn
on July 16 at noon. For 28 years, Dave has performed
thousands of shows for audiences nationwide. Dave is a frequent
performer at Navy Pier. Not only does Dave perform but he also
hand crafts all his marionettes.
This event is open to all Fermilab employees, visitors and on-site
contractors and their
children. This event is free. All we ask is that you do not arrive
late. If your spouse is coming from off-site you must notify