Tag: top quark
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From top quarks to Higgs bosons: LHCb’s expanding jet programme
From top quarks to Higgs bosons: LHCb’s expanding jet programme Over the past decade, LHCb has steadily evolved from a detector primarily associated with heavy-flavour physics into a broader forward spectrometer able to address an increasingly diverse set of questions in Standard Model and beyond-the-Standard-Model physics. Two recent papers illustrate that evolution particularly well. One
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Bound state, found state – ATLAS ties the knot on top quark pair production at threshold
Bound state, found state – ATLAS ties the knot on top quark pair production at threshold Physics at the LHC often advances by pushing into regimes once thought unreachable. One such frontier is the precise study of top-anti-top quark pairs (tt̄) near the production threshold, where subtle quantum effects may leave their imprint. A few
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ATLAS and CMS unite to weigh in on the top quark
ATLAS and CMS unite to weigh in on the top quark The ATLAS and CMS Experiments at CERN have just released a new measurement of the mass of the top quark. The new result combines 15 previous measurements to give the most precise determination of the top-quark mass to date. Among the known fundamental particles
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ATLAS results: from precision to rarity
ATLAS results: from precision to rarity Two recent ATLAS results that showcase the full range of the ATLAS physics potential, from precision to rarity, were shown at LHCP and presented at a recent CERN LHC seminar. A test of the universality of τ and μ lepton couplings in W boson decays from tt̅ events [1]
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ATLAS results: from precision to rarity
ATLAS results: from precision to rarity Two recent ATLAS results that showcase the full range of the ATLAS physics potential, from precision to rarity, were shown at LHCP and presented at a recent CERN LHC seminar. A test of the universality of τ and μ lepton couplings in W boson decays from tt̅ events [1]
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CMS weighs in for the top quark
CMS weighs in for the top quark The top quark has a special position in the zoo of elementary particles, being the heaviest as well as one of the rarest fundamental particles ever sighted. With a mass of about 173 GeV, it has 40 times the mass of its partner, the bottom quark and is
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CMS weighs in for the top quark
CMS weighs in for the top quark The top quark has a special position in the zoo of elementary particles, being the heaviest as well as one of the rarest fundamental particles ever sighted. With a mass of about 173 GeV, it has 40 times the mass of its partner, the bottom quark and is
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ATLAS observes Higgs boson produced in association with top quarks
ATLAS observes Higgs boson produced in association with top quarks The ATLAS collaboration presented the first evidence of “ttH production”, a rare process where a pair of top quarks emits a Higgs boson. Observing this process would provide new insight into the Higgs mechanism and allow for new studies of how unknown physics might (or
