BaBar searches for new physics in invisible decays
Updated: 2013-01-30 00:00:00
On the hunt for physics beyond the Standard Model, scientists recently searched BaBar data for evidence of invisible particles.
Scientists analyzing data from the BaBar experiment, which operated at SLAC between 1999 and 2008, recently published the results of a search for signs of invisible particles: exotic bits of matter that interact so weakly with ordinary stuff they left no mark in the BaBar detector. In the process the researchers established much better limits on possible physics not contained within the Standard Model, which is currently the best explanation for the behavior of matter and the fundamental forces that shape it.
CURRENT ISSUE THE MAGAZINE Current Issue Next Issue Back Issues Digital Editions Preview the Magazine Special Issues E-mail Newsletter About the Magazine Subscribe , Renew or Give a Gift Subscriber Benefits Trips Tours Advertise Advertiser Links Sweepstakes Press Room Contact Us COLUMNISTS Bob Berman Glenn Chaple Tony Hallas David H . Levy Erika Rix Stephen James O'Meara NEWS OBSERVING Astronomy News Cosmic Adventures Dave's Universe videos StarDome Plus Intro to the Sky Astronomy for Kids Urban Skies Astronomy Myths The Sky this Week The Sky this Month Star Atlas Ask Astro Astro Imaging Constellation Observing Glossary EQUIPMENT Products Reviews How To MULTIMEDIA Picture of the Day Reader Photo Gallery Videos Podcasts Wallpaper COMMUNITY Why Join Local Group Blog Dave's Universe Astronomy
CURRENT ISSUE THE MAGAZINE Current Issue Next Issue Back Issues Digital Editions Preview the Magazine Special Issues E-mail Newsletter About the Magazine Subscribe , Renew or Give a Gift Subscriber Benefits Trips Tours Advertise Advertiser Links Sweepstakes Press Room Contact Us COLUMNISTS Bob Berman Glenn Chaple Tony Hallas David H . Levy Erika Rix Stephen James O'Meara NEWS OBSERVING Astronomy News Cosmic Adventures Dave's Universe videos StarDome Plus Intro to the Sky Astronomy for Kids Urban Skies Astronomy Myths The Sky this Week The Sky this Month Star Atlas Ask Astro Astro Imaging Constellation Observing Glossary EQUIPMENT Products Reviews How To MULTIMEDIA Picture of the Day Reader Photo Gallery Videos Podcasts Wallpaper COMMUNITY Why Join Local Group Blog Dave's Universe Astronomy
CURRENT ISSUE THE MAGAZINE Current Issue Next Issue Back Issues Digital Editions Preview the Magazine Special Issues E-mail Newsletter About the Magazine Subscribe , Renew or Give a Gift Subscriber Benefits Trips Tours Advertise Advertiser Links Sweepstakes Press Room Contact Us COLUMNISTS Bob Berman Glenn Chaple Tony Hallas David H . Levy Erika Rix Stephen James O'Meara NEWS OBSERVING Astronomy News Cosmic Adventures Dave's Universe videos StarDome Plus Intro to the Sky Astronomy for Kids Urban Skies Astronomy Myths The Sky this Week The Sky this Month Star Atlas Ask Astro Astro Imaging Constellation Observing Glossary EQUIPMENT Products Reviews How To MULTIMEDIA Picture of the Day Reader Photo Gallery Videos Podcasts Wallpaper COMMUNITY Why Join Local Group Blog Dave's Universe Astronomy
CURRENT ISSUE THE MAGAZINE Current Issue Next Issue Back Issues Digital Editions Preview the Magazine Special Issues E-mail Newsletter About the Magazine Subscribe , Renew or Give a Gift Subscriber Benefits Trips Tours Advertise Advertiser Links Sweepstakes Press Room Contact Us COLUMNISTS Bob Berman Glenn Chaple Tony Hallas David H . Levy Erika Rix Stephen James O'Meara NEWS OBSERVING Astronomy News Cosmic Adventures Dave's Universe videos StarDome Plus Intro to the Sky Astronomy for Kids Urban Skies Astronomy Myths The Sky this Week The Sky this Month Star Atlas Ask Astro Astro Imaging Constellation Observing Glossary EQUIPMENT Products Reviews How To MULTIMEDIA Picture of the Day Reader Photo Gallery Videos Podcasts Wallpaper COMMUNITY Why Join Local Group Blog Dave's Universe Astronomy
The pursuit of dark matter and dark energy s one of the most exciting—and most hallenging—areas of science. Now researchers hink they’e beginning to close in.
If you could use only 5 percent of the alphabet, you’d be stuck with the letter A. Five percent of a complete daily diet is a slice of dry toast.
Yet that’s all we have, or at least all we can perceive, of the place we call home.
Less than 5 percent of the universe is ordinary matter made of quarks, electrons and neutrinos.
Despite a strong initial start, in the universe of social media it's widely believed that Google+ will never replace Facebook.
That said, I'd like to get all Thomas Friedman-y and speculate wildly from a very limited personal anecdote. Namely, my 6th grader just begged to be allowed to join Google+. Begged! Stomping and huffing was involved when the request was denied. And why? "All my friends are on Google+!!!!"
I know for a fact that my kid's friends have parents who would certa
More than 250 self-proclaimed nerds pack a bar in the heart of San Francisco to learn something new.
On an otherwise drab block of Fell Street in San Francisco, the Rickshaw Stop stands out, a giant octopus spreading suckered tentacles across its purple façade. Inside, people cluster around a table, waiting for orders of grilled cheese sandwiches, and line up three deep around the bar.
There are nowhere near enough chairs in front of the stage, so many spectators sit cross-legged on the floor, watch from the balcony or stand at the back, straining to hear. A guy wanders by with a Rubik’s cube.
A young woman steps onstage, the second act of this Wednesday evening.
A superbubble located in the Large Magellanic Cloud about 160,000 light years from Earth. Superbubbles are found in regions where massive stars have formed in the last few million years.
CURRENT ISSUE THE MAGAZINE Current Issue Next Issue Back Issues Digital Editions Preview the Magazine Special Issues E-mail Newsletter About the Magazine Subscribe , Renew or Give a Gift Subscriber Benefits Trips Tours Advertise Advertiser Links Sweepstakes Press Room Contact Us COLUMNISTS Bob Berman Glenn Chaple Tony Hallas David H . Levy Erika Rix Stephen James O'Meara NEWS OBSERVING Astronomy News Cosmic Adventures Dave's Universe videos StarDome Plus Intro to the Sky Astronomy for Kids Urban Skies Astronomy Myths The Sky this Week The Sky this Month Star Atlas Ask Astro Astro Imaging Constellation Observing Glossary EQUIPMENT Products Reviews How To MULTIMEDIA Picture of the Day Reader Photo Gallery Videos Podcasts Wallpaper COMMUNITY Why Join Local Group Blog Dave's Universe Astronomy
Physicists announced 30 years ago the discovery of the W boson, a particle that remains an important topic of research.
January 25 marked the 30th anniversary of the discovery of the W boson, a fundamental piece of the Standard Model of particle physics and an important player in the formation of the universe.
Together with the Z boson, the W is responsible for the weak force, one of four fundamental forces that govern the behavior of matter in our universe. Particles of matter interact by exchanging these bosons.
, CURRENT ISSUE THE MAGAZINE Current Issue Next Issue Back Issues Digital Editions Preview the Magazine Special Issues E-mail Newsletter About the Magazine Subscribe , Renew or Give a Gift Subscriber Benefits Trips Tours Advertise Advertiser Links Sweepstakes Press Room Contact Us COLUMNISTS Bob Berman Glenn Chaple Tony Hallas David H . Levy Erika Rix Stephen James O'Meara NEWS OBSERVING Astronomy News Cosmic Adventures Dave's Universe videos StarDome Plus Intro to the Sky Astronomy for Kids Urban Skies Astronomy Myths The Sky this Week The Sky this Month Star Atlas Ask Astro Astro Imaging Constellation Observing Glossary EQUIPMENT Products Reviews How To MULTIMEDIA Picture of the Day Reader Photo Gallery Videos Podcasts Wallpaper COMMUNITY Why Join Local Group Blog Dave's Universe
Researchers apply the rules of particle physics to the world of online shopping and recommendation engines, and suggest it may be unwise to rely on popular opinion.
You’ve heard the age-old advice that it's foolish to jump off a cliff "just because everybody else is doing it." Now, researchers are turning to particle physics to prove that the most popular choice is not always the best one.
Scientists, engineers and other personalities from Europe’ largest physics lab begin a new series of “Hangout with CERN” video chats.
On Jan. 24, CERN researchers will give some virtual face-time to friends, fans and curious members of the public.
“Hangout with CERN” video chats, hosted on Thursdays through CERN’s Google+ page, will allow people to participate in group conversations with CERN physicists, engineers and others. The second series of the chats begins this week.
“We’re giving a window into CERN and a way of talking to the people here,” says CERN social media manager Kate Kahle, who produces the Hangouts.
A physicist, a software developer and a writer step outside one night to take in nature’ eauty at a mountaintop observatory in Chile.
It takes my eyes a few moments to adjust when I walk out the door of the Victor M. Blanco telescope in Chile around 2 a.m. I take a few careful steps into the moonless October night with a physicist and a software developer following close behind. We are working the overnight shift at the Cerro Tololo Inter-American Observatory, monitoring the newly installed Dark Energy Camera.
Physicists have begun the first full run of proton-lead collisions in the Large Hadron Collider to learn more about the beginning of our universe.
The Large Hadron Collider is getting ready for a two-year upgrade to prepare it to run at even higher energies. But first it's going for one more run.
A brainy playground springs up at Fermilab, offering hands-on education experiences for kids.
Ask a bunch of 10-year-olds this question: Would you rather hear about the journey of a proton through Fermilab’s accelerators, or would you rather be a proton and take that journey yourself?
And now, go visit an ear doctor, since the deafening sound of kids shouting out the second option has no doubt caused some damage. It’s no secret that hands-on education experiences are more fun for kids—it feels like recess, and yet learning is happening.
3000 astronomers will bring down the wireless in any building, so I have been a bit behind in posting from the American Astronomical Society meeting in Long Beach CA… Yesterday, Bill Keel presented a poster with the latest Hubble observations of the Voorwerpjes in the Giant Room Full of Posters, where astronomers, pretty much ALL [...]
As usual when the American Astronomical Society meets, this has been an intense week of research results, comparing notes, and laying plans. Galaxy Zoo has once again been well represented. Here’s Kevin discussing the Green Valley in galaxy colors, making the case that it consists of two completely different populations when Galaxy Zoo morphologies are [...]
AAS meeting update! The last 24 hours have been good for Zoo team member Bill Keel (@ngc3314) is based at the University of Alabama. Not only did his University football team win some sort of championship (they all look the same to Europeans) last night, but the Hubble Space Telescope observed the final Voorwerpje in our [...]