Tag archives: particle physics
By James Dacey
Who discovered the Higgs boson? Was it Peter Higgs and a combination of other great minds? The experimentalists at CERN who analysed reams of data? The magnificent machinery of the Large Hadron Collider (LHC) itself? By the time that the next great breakthrough in particle physics comes along, the debate about who makes the discovery could become even more complex. That’s because a new citizen-science project is encouraging anyone with an Internet connection to search for new curiosities in the Higgs data.
“Higgs Hunters” launched this week and invites the public to sift through collision images from the LHC’s ATLAS detector. The task at hand is to look for the paths of charged particles that seem to appear out of thin air in what are known as off-centre vertices. As explained on the Higgs Hunters website, “some scientists think the Higgs could break apart into exotic particles entirely new to science”. On the Higgs Hunters website, citizen scientists help to count the number of particle tracks and can notify the science team if they spot anything out of the ordinary.
By Matin Durrani
CERN has been celebrating its 60th anniversary all this month, but it was in fact six decades ago today – on Wednesday 29 September 1954 – that the lab’s convention was ratified by its first 12 member states: Belgium, Denmark, France, Germany, Greece, Italy, the Netherlands, Norway, Sweden, Switzerland, the UK and Yugoslavia.
Physics World has played its own small part in marking the anniversary, including a careers feature on what skills you need as CERN director-general, a day-in-the-life blog written by current CERN boss Rolf-Dieter Heuer, and an appearance at the lab’s TEDx event last week by our columnist Robert P Crease.
This blog entry rounds off our coverage of CERN at 60 with a few links to classic material from our archives.
By Robert P Crease in CERN, Geneva
“TED”, which stands for Technology, Entertainment, Design, is a non-profit organization that promotes talks on what it calls “ideas worth spreading”; the “x” denotes an independent event organized in that spirit. This is the second TEDxCERN – the first took place last year – and it’s hosted by Brian Cox. More than 1000 people will watch 14 speakers, three performances and three animations; tens of thousands more viewers are expected online.
James Gillies, CERN’s head of communication, invited me to be a speaker. The subject this year, he said, was how science could better engage with major social challenges. He said that my May Physics World column “Why don’t they listen?” – on why scientists have difficulty getting politicians’ ears – had “hit the nail on the head”, and asked if I’d be interested in discussing the idea.
A week at CERN? A great excuse to implore colleagues take over my classes? Sure! All I had to do, I thought, was talk my way through some extended version of the column.
A scientific pyramid scheme, symmetry through the ages, why physics students are “standing a little taller” and more
By Hamish Johnston
Just this week six people were convicted in Bristol of crimes related to running a pyramid scheme. This involves taking money from lots of new investors and giving it to a smaller number of investors who signed up earlier – until the pyramid collapses. Is the current model for training scientists a pyramid scheme of sorts? That is the claim in a piece on the US’s National Public Radio (NPR) website written by Richard Harris.
By Rolf-Dieter Heuer, Geneva
There is no such thing as a typical day in the life of a CERN director-general (DG), certainly not this one in any case. In my experience, each incumbent has carved out a slightly different role for themself, shaped by the laboratory’s priorities and activities at the time of their mandate. For me, every day goes beyond science, management and administration, and I am particularly fortunate to have been DG through a remarkable period that has seen not only the successful launch of the Large Hadron Collider (LHC) and confirmation of the Brout–Englert–Higgs mechanism, but also an opening of CERN to the world – an area that I have pursued with particular vigour.
As I regularly joke, we have changed the “E” of CERN from “Europe” to “Everywhere”, and that has meant a lot of travel for the CERN DG, as we hold discussions with prospective new members of the CERN family. And when the CERN Council opened up membership to countries from beyond the European region in 2010, it seemed to me that we should also be extending our contacts in other directions as well.
By Louise Mayor
We’re always up for trying new formats and approaches to journalism here at Physics World. You’ve probably seen our documentary-type films, podcasts and 100 Second Science video series, but the latest addition to our repertoire is a short monthly video in which one of our editorial team highlights something in the upcoming or current issue as a kind of taster.
So this month, I decided to take the plunge and get in front of the camera myself to present the third edition of what we have started jokingly referring to in the office as our “fireside chats”. (Here are the July and August versions.)
By Tushna Commissariat
This week, South Korea’s one and only astronaut, 36-year-old Yi So-yeon, has quit her job, thereby signalling the end of the country’s manned space programme for the time being. In 2008 Yi became the first Korean to go into space, when for 11 days she travelled on board a Russian Soyuz spacecraft to the International Space Station, after being chosen through the government-run Korean Astronaut Program. Yi cited personal reasons for quitting, but has been studying for an MBA in the US since 2012. You can read more about her work and reasons for leaving in articles from Australia Network News and abc News.
By Hamish Johnston
It has been a cracker of a summer here in south-west England, with lots of sunshine and temperatures in the mid-twenties just about every day. Not surprisingly, I have been eating my fair share of ice cream, but unlike this concoction whipped up by a physicist-turned-chef in Spain, the stuff you get in Bristol does not change colour when you lick it!
By Tushna Commissariat and Hamish Johnston
Folk and country music often blends the sharp twang of a banjo with the mellow and sustained tone of a guitar. While the two instruments appear to be very similar – at least at first glance – they have very different sounds. This has long puzzled some physicists, including Nobel laureate David Politzer, who may have just solved this acoustical mystery.
By Tushna Commissariat
This week, we came across the above video on “extra dimensions”, in which physicist Don Lincoln talks about the possible physical reality of such dimensions and why we need them. The video begins with Lincoln pointing out just how weak a force gravity is, especially when compared with, say, magnetism. He then goes on to talk about how gravity may exist in more than the three dimensions we experience, making sure to point out that these “extra dimensions” are not of the Hollywood variety in which a different reality may exist. This video is part of Fermilab’s “Big Mysteries” video series – be sure to take a look at the rest.