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physics theory running out of hiding places
Researchers(COMMON NOUN) at
the Large Hadron Collider(PROPER NOUN) have detected(TRANSITIVE VERB) one of the rarest
particle decays seen in Nature.The finding(NOUN) deals(VERB) a significant(ADJECTIVE) blow(SINGULAR
NOUN) to the theory of physics(NOUN) known as supersymmetry(?).Many
researchers(PLURAL NOUN) had hoped(VERB) the LHC(PROPER NOUN) would
have confirmed(VERB) this by now(ADVERB OF
TIME).Supersymmetry(NOUN), or SUSY(NOUN), has gained(VERB)
popularity(DIRECT
OBJECT) as a way to explain some of the inconsistencies(PLURAL
NOUN) in the traditional theory of subatomic physics known as the
Standard Model.The new(ADJECTIVE) observation(NOUN),
reported
at the Hadron Collider Physics conference in Kyoto(INDEPENDENT CLAUSE), is not(LINKING VERB) consistent with many of the
most likely models of SUSY.Prof Chris Parke(PROPER
NOUN), who is the spokesperson for the UK Participation in the LHCb experiment(INDEPENDENT
CLAUSE), told(ACTION VERB) BBC News(INDIRECT OBJECT): "Supersymmetry may not be(VERB) dead(NOUN)
but these latest results(DIRECT OBJECT) have(VERB) certainly(ADVERB
OF MANNER) put(VERB) it(INDIRECT OBJECT) into hospital."
Supersymmetry theorises(TRANSITIVE VERB)
the existence of more massive(ADJECTIVE) versions of particles that have already(ADVERB OF TIME) been detected. Their existence(NOUN) would help explain why galaxies
appear to rotate faster than the Standard Model would suggest. Physicists have
speculated that as well as the particles we know about(DEPENDENT CLAUSE), galaxies
contain invisible, undetected dark(ADJECTIVE) matter
made up
of super particles(DEPENDENT CLAUSE). The galaxies therefore contain
more mass than we can detect and so spin faster.Researchers at the LHCb
detector have dealt a serious(ADJECTIVE) blow
to this idea. They(PERSONAL PRONOUN) have
measured the decay between a particle known as a Bs Meson into two particles
known as muons. It is(LINKING VERB) the
first time that this decay has been observed and the team has calculated that
for every billion times that the Bs Meson decays it only(ADVERB
OF MANNER) decays in this way three times.If superparticles were to
exist the decay would happen far more often. This test is one of the
"golden" tests for supersysymmetry and it is one that on the face of
it this hugely popular theory among physicists has failed.Prof Val Gibson(SUBJECT), leader of the Cambridge LHCb team, said that the new result was "putting our supersymmetry theory colleagues in a spin".
The results(SUBJECT) are in fact completely(ADVERB OF PLACE) in line with what(INTERROGATIVE PRONOUN) one would expect from the Standard Model. There is(LINKING VERB) already(ADVERB OF TIME) concern(NOUN) that the LHCb's sister detectors might have expected to have detected superparticles by now, yet none have been found so far.(INDEPENDENT CLAUSE)
If supersymmetry is not an explanation for dark matter, then theorists will have to find alternative ideas to explain those inconsistencies in the Standard Model. So far researchers(SUBJECT) who are racing to find evidence of so called "new physics"(INDEPENDENT CLAUSE) have run into a series of dead ends. "If new physics exists, then it is hiding very well behind the Standard Model," commented Cambridge physicist Dr Marc-Olivier Bettler, a member of the analysis team. The result does not rule out(PHRASAL VERB) the possibility that super particles exist. But according to Prof Parkes, "they(PERSONAL PRONOUN) are running out of (PHRASAL VERB) places to hide".
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