By Paul Rincon, Paris

Physicists at the Large Hadron Collider (LHC) have seen several candidates for the heaviest elementary particle known to science.
If the observations are confirmed, it would be a first for Europe; so far, the top quark particle has only been generated by one lab in the US.
Dr Arnaud Lucotte said the discovery could assist physicists in the hunt for the elusive Higgs boson, or “God particle”.
Details of the top quark candidates were presented at a major particle physics conference in Paris.
The International Conference on High Energy Physics (ICHEP) runs from 22-28 July.
The Large Hadron Collider is operated by the European Organization for Nuclear Research (Cern), based in Geneva.
The LHC is a giant accelerator machine housed in a 27km-long (17 miles) tunnel under the French-Swiss border.
Two beams of proton particles are fired around the giant subterranean “ring” and smashed together at crossing points located around the tunnel.
Giant experiments are located at these crossing points to look for new particles in the sub-atomic wreckage of the collisions.
‘Striking event’
Several possible detections of top quarks have been made recently by the LHC’s Atlas and Compact Muon Solenoid (CMS) experiments.
Atlas has seen nine collision events compatible with the top quark; CMS has observed 3-4 candidate events. But physicists stressed that more data was needed in order to support the conclusive observation of top quark production at the LHC.
The detection of the top quark would represent a small milestone for the European lab, which is making steady progress after the accident which forced it to shut down for 14 months shortly after its “switch on” in 2008.
The Atlas detector has seen nine candidates for the top quarkAnd top quark physics is not well explained; studying it presents the opportunity to carry out important scientific work at the LHC.
The top quark was first discovered in 1995 by the Tevatron accelerator, operated by Fermilab in Illinois. Since then, the US accelerator has produced the particles in abundance. But they have never been produced outside Fermilab.
In a presentation at ICHEP, particle physicist Tim Christiansen said events observed by the CMS experiment included one “striking” top quark candidate.
Dr Arnaud Lucotte, from the French National Centre of Scientific Research (CNRS) told BBC News that the top quark was “well coupled” to the Higgs boson. In other words, there is thought to be a special interaction between these two particles.
Hunting the Higgs
Despite decades trying, particle physicists have so far failed to detect the Higgs. The boson particle is crucial to the current theory which has been devised to explain the interactions of sub-atomic particles, known as the Standard Model.
But rival physicists working at the Tevatron machine now believe the Higgs is within reach of the US accelerator.
They now hope to detect the elusive particle themselves, especially if the Tevatron’s lifetime can be extended by three years until 2014, as is currently being discussed.
CMS saw a potential top quark “decay” into two other particlesIf the Higgs boson exists in a form known as the charged Higgs, Dr Lucotte explained, the top quark could be crucial to detecting it.
Elementary particles generated at colliders “decay”, or transform, into other sub-atomic particles, which may or may not be stable.
The close coupling of the charged Higgs to the top quark means that, if the Higgs boson is heavier than the top quark, it might reveal itself by decaying into a top quark and another particle known as a b-quark.
If the Higgs is lighter, then the top quark might decay into a Higgs and a b-quark.
Other physicists envisage a different type of Higgs, one which fits the constraints of the Standard Model.
The top quark might also act as the progenitor for so-called “supersymmetric” particles. These would represent an entirely new class of particles, predicted to exist by theorists, but which have yet to be observed at particle accelerators.

Launch Countdown









Education, Education, Education - New For Old Labour
In this, the third and final article reviewing the educational policies of the major political parties, Chris Cherry considers the plans for the future of education under a fourth Labour term, if the Government is successful at the upcoming General Election.
It would be easy to sit in judgment over what will have been almost thirteen years of Labour control in Government. After all, of all the parties previously considered, this is the one with the nation’s mandate to invest our tax revenues and whose policies actually have consequences. Alternatively, it would be equally simplistic to consider only what happens next, without reference to the lessons that should have been learned from over a decade of putting thoughts into action. With a promised election banner of “Education, Education, Education”, have our young people, some of whom have only ever known Labour education policy, been well served or have a generation felt the door shut in their world and the light turned off.
In 1997, the education attainment of our young people, depending on which data you relied upon, placed us happily above Mexico and Turkey in the Organisation for Economic Co-operation and Development (OECD) rankings, but unhappily below all of the other twenty or so Countries. These rankings are viewed worldwide as a benchmark for national investment and are therefore used as a basis for UK investment and Policy. However, we sat at the top of the pile for degree graduates, although our output subjects were not aligned to where the intellectual shortages were greatest. It was at this time that the, “Medieval Archaeology versus Construction” debates emerged. By the time of the next General Election in June 2001, we had moved up a place on the OECD list (overtaking Brazil, a Country with the lowest per capita investment in people under 21). The new target for the Government was the Czech Republic, a dizzying tenth on the OECD list and a Country who spent at the time less than a quarter of the amount per capita than the UK. Unfortunately for the UK, the Czech Republic increased its effective investment in education and raced to second place on the list. Only South Korea bettered them. Poor performance in schools in South Korea would be a matter of social shame.
Our schools and colleges were dealing with the impact of the new Curriculum 2000, which sought to shake up the assessment of the GCSE to A Level boundary, including bringing in the new AS exam. Further down the age range, the impact of the revised national curriculum and the, “one hat fits all” were being debated. OfSTED picked up a wider inspection role that included colleges, and training providers became the focus for the Adult Learning Inspectorate. New autonomous non-departmental agencies appeared – the Quangos – and the bureaucracy of Governance swelled to unprecedented levels. Indeed, the NHS became Europe’s largest employer.
Investment in schools in all areas of operation increased in absolute and in real terms. Building Schools for the Future (BSF) and school Private Finance Initiative (PFI) projects mushroomed and some of the poorer attaining schools converted into specialist academies with the emergence of new Executive Head teachers and corporate management of schools.
There was, and has been, undeniably the largest investment in schools, colleges and education in general that there has ever been. Billions of UK tax pounds have been spent on new buildings, managing and accounting for learning, programmes to access hard to reach, truanting and poorly performing young people and support for schools and parents in helping young people achieve. Indeed, the amount spent per capita by Labour has risen from around £2,750 per pupil annually to around £5,500 today (1997 equivalent investment today would be around £4000).
It would be grossly unfair to give the impression that the welcome and significant investment in education has been unsuccessful, since there has been a significant improvement in so many areas. Setting aside the current economic issues which were of no fault of the education sector, but which have seriously impacted the college building programmes, school investment programmes and access to apprenticeship jobs for young people, there has been an improvement in educational attainment in all the areas that are important. What is debatable, however, is whether the distance travelled is sufficient when compared to the levels of investment made. We remain below the OECD averages in secondary education, and are no longer in the top echelons of graduates in higher education.
As with any long term strategy (and most school strategies are thirty years or more), it takes time to see real changes appear, they are difficult to quantify and are nearly impossible to attribute to any single action. Indeed, it remains unclear whether attainment is the result of late Conservative policy, or of the relatively recent Labour policies.
As a parting shot to the previous track record of Labour, who campaigned unashamedly on education, it is still the case that around half of all Year 11 leavers (at age 16) leave school without the expected five GCSE passes at Grade ‘C’ or above. Indeed if you include Maths and English in the equation, the numbers drop worryingly low. It remains the only real benchmark, as it is this “Level 2” comparator that can be used to compare the UK with Europe. Our gold standard “A Level” does not have a direct equivalent relative in Europe and the new(ish) Baccalaureate is gaining acceptance, particularly in fee-paying schools, although the higher education sector remains cool about the educational comparability of the early adopters.
So, how would Labour tackle the persistent educational issues if successful in the upcoming General Election? For a start, they have set out their policies, it would seem, as if the last thirteen years were governed by someone else. To illustrate this, they have initiated a major policy investment to offer one to one tuition to 300,000 secondary school children who are significantly behind their peers. One might say this is one last throw of the die and an acknowledgment of failure. Alternatively, this could be considered an attempt to fix a tricky problem that even schools acknowledge is a challenge – to provide individualised learning in a class size of thirty.
Labour’s policy on schools is surprisingly simple. This is a combination of timing (it is preferable to say little in an election year that might reduce your voting majority) and the fact that they are the sitting Government and their need is not to state what they would do, but just get on and do it. Their tone is a little on the vague side in most areas, “over the coming years” is a favourite with no start or end date. Again, this is to be expected as, just like cyclists in a pursuit race, you don’t really want to be the one making the first move and it’s better to be stationary on the track than ride off and be caught in the last bend.
Labour retains a focus on the basics, literacy and numeracy. In fact, this is strikingly similar to the election pledges of 1997 and 2001. The failure to achieve the literacy targets from both those campaigns has meant that this remains a persistent inclusion on the wish list.
By far, the largest inclusion and focus on school policy is in, “The National Challenge”. In an attempt to address the poor attainment of GCSE qualifications at age 16, including Maths and English of our young people, the Government have set a target that “no school has fewer than 30 per cent of its pupils achieving 5 GCSEs at A*-C grade including in English and Maths by 2011”. That still means it is acceptable for over two in three to miss out on GCSE Maths and English at Grade ‘C’. Along with this pledge, comes £400m of investment spread over three years. Given the population of Year 10 and 11 learners, and the numbers of Year 8 and 9 that would be in scope for this investment, this equates to around 450 schools who are failing to achieve even this modest 30% achievement benchmark. I wonder how many parents would think it acceptable that two out of their three children miss out on the minimum school attainment as a threshold.
Clearly, this area of education planning has always been a challenge – a national challenge – and it is with some sympathy and respect that this area of policy should be considered. The Conservatives routinely covered up their Fifth Year (Year 11) performance by reference to the numbers entering Sixth Form (interestingly the sixth form has remained even though now, the pupils and students are technically Year 12 and 13).
Of course a major problem for all the major parties is the persistent and massive hole in the national economy. This hole is unlikely to subside for many years to come. Whatever may be planned, the reality may be considerably different. At the moment, fewer employers are taking on apprentices. The Government (and realistically any Government) is underwriting places in further education without a prospect of a job at the end. Alongside this, the notion of employers partnering schools to become a Specialist school, a Trust school or an Academy is a worthy if unrealistic aim given the scaling back of our national investment.
Labour is mandating young people to remain within the learning and skills environment until the age of eighteen. A cynical view would be that this serves to reduce the unemployment of younger people – by far the worst unemployment statistic politically. Positively, it removes the choice at sixteen to leave the learning environment and make a complex and life determining decision with a number of possible outcomes. The Government, often accused of nanny state tactics is at least trying to streamline the decision making process. For many families, the traditional GCSE, A Level and degree route that most resembles the ambition of our education system is as far from reality as is possible to achieve. For these families, the Labour Government is offering a suite of shorter term, single issue interventions that can only be effective if allowed to mature, develop and learn from mistakes. At times, there is so much policy, initiative and funding change; it is hard for anything to become established. The Government is often likened to a gardener. Careful planting, tending and nurturing yields a mature and healthy garden. Keep rotavating and replanting and nothing will ever become established.
Clearly, the next three months or so will become more congested with the major parties counter-punching each other. The gap between the Conservative lead and Labour will be as hard fought numerical territory as any political contest in the last century. With most smart money on 6 May, the Spring will be a cauldron of policy manifesto and promises, real or imagined.
When all is said and done, the biggest hope is that whoever wins the Election will not close the door on such a great number of our nation’s young people. Preventing that, at least, is something worth voting for.
Labour Policy at a glance – Schools
Labour Policy at a glance – Skills
Chris Cherry
February 2010