Search results for "8000 GeV-cms"

showing 6 items of 6 documents

Observation of an Excited $B^{\pm}_c$ Meson State with the ATLAS Detector

2014

A search for excited states of the B±c meson is performed using 4.9 fb-1 of 7 TeV and 19.2 fb-1 of 8 TeV pp collision data collected by the ATLAS experiment at the LHC. A new state is observed through its hadronic transition to the ground state, with the latter detected in the decay B±c→J/ψπ±. The state appears in the m(Bc±π+π-)-m(Bc±)-2m(π±) mass difference distribution with a significance of 5.2 standard deviations. The mass of the observed state is 6842±4±5 MeV, where the first error is statistical and the second is systematic. The mass and decay of this state are consistent with expectations for the second S-wave state of the B±c meson, B±c(2S).

B-C meson; spectroscopy; equationEquationБольшой адронный коллайдер550Atlas detectorlarge hadron colliderGeneral Physics and Astronomyhadronic decay [excited state]7. Clean energy01 natural sciencesHigh Energy Physics - ExperimentSettore FIS/04 - Fisica Nucleare e SubnucleareSubatomär fysikHigh Energy Physics - Experiment (hep-ex)B/c* --> B/c+ pi+ pi-Subatomic Physicsexcited stateddc:550EQUATION[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]scattering [p p]ATLAS Detector; Meson StateB mesonGeneralLiterature_REFERENCE(e.g.dictionariesencyclopediasglossaries)SpectroscopyQCPhysics8000 GeV-cms [7000]Large Hadron ColliderSPECTROSCOPYATLAS experimentSettore FIS/01 - Fisica SperimentaleATLASB-C MESON:Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431 [VDP]B/c* --> B/c+ pi+ pi-medicine.anatomical_structureCERN LHC CollExcited statePhysical Sciences7000: 8000 GeV-cmsLHCParticle Physics - ExperimentB-C MesonParticle physicsp p: scatteringMeson530 PhysicsCiências Naturais::Ciências FísicasAstrophysics::High Energy Astrophysical Phenomena:Ciências Físicas [Ciências Naturais]FOS: Physical sciencesmass [excited state]столкновение частиц530hadronic decay [B/c+]Nuclear physicsPhysics and Astronomy (all)(J/psi(3100) pi+) [mass spectrum]B/c+ --> J/psi(3100) pi+Atlas (anatomy)TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY0103 physical sciencesmedicineFysikHigh Energy Physics010306 general physicsB/c+ --> J/psi(3100) pi+Ciencias ExactasScience & TechnologyATLAS detector010308 nuclear & particles physicsHigh Energy Physics::Phenomenology:Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431 [VDP]FísicaState (functional analysis)B/c+: hadronic decaymass differencemass spectrum: (J/psi(3100) pi+)B-C MESON; SPECTROSCOPY; EQUATIONB/c+excited state: massexcited state: hadronic decayExperimental High Energy PhysicsмезоныHigh Energy Physics::Experimentproton-proton collisionsATLAS детекторexperimental results
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Measurement of matter-antimatter differences in beauty baryon decays

2017

Differences in the behaviour of matter and antimatter have been observed in $K$ and $B$ meson decays, but not yet in any baryon decay. Such differences are associated with the non-invariance of fundamental interactions under the combined charge-conjugation and parity transformations, known as $C\!P$ violation. Using data from the LHCb experiment at the Large Hadron Collider, a search is made for $C\!P$-violating asymmetries in the decay angle distributions of $\Lambda^0_b$ baryons decaying to $p\pi^-\pi^+\pi^-$ and $p\pi^-K^+K^-$ final states. These four-body hadronic decays are a promising place to search for sources of $C\!P$ violation both within and beyond the Standard Model of particle…

Physics beyond the Standard ModelHadrontransformation [parity]General Physics and Astronomy7000 GeV-cms8000 GeV-cmsviolation [CP]decay [meson]01 natural sciencesHigh Energy Physics - ExperimentSettore FIS/04 - Fisica Nucleare e SubnucleareHigh Energy Physics - Experiment (hep-ex)antimatterscattering [p p][PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]AntimatèriaDecays of bottom mesons Flavor symmetriesB mesonLHCb - Abteilung HintonPhysicsLarge Hadron Collider02 Physical Sciencesnew physicsCabibbo–Kobayashi–Maskawa matrixPhysicsparity: transformationParticle physicsFlavor symmetriesCharge conjugation parity time reversal and other discrete symmetrieDecays of bottom mesonsasymmetry: CPCERN LHC CollCP-VIOLATION; LAMBDA(B)meson: decayangular distribution [decay]AntimatterPhysical SciencesCP violationLHCcolliding beams [p p]Lambda/b0: hadronic decayParticle Physics - Experimentp p: scatteringParticle physicsAntimatterFluids & PlasmasPhysics MultidisciplinaryLambda/b0 --> p pi- K+ K-FOS: Physical scienceshadronic decay [Lambda/b0]Lambda/b0 --> p pi+ 2pi-CP [asymmetry]530Lambda/b0 --> p pi+ 2pi-Determination of Cabibbo-Kobayashi & Maskawa (CKM) matrix elementNONuclear physicsPhysics and Astronomy (all)LAMBDA(B)TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY0103 physical sciencesCP: violationdecay: angular distributionddc:530010306 general physicsLarge Hadron Collider (France and Switzerland)01 Mathematical SciencesScience & Technologycharge conjugation010308 nuclear & particles physicshep-exLambda/b0 --> p pi- K+ K-High Energy Physics::PhenomenologyGran Col·lisionador d'HadronsLHC-BHEPBaryonLHCbCP-VIOLATIONCKM matrixHadronic decays of baryonBottom baryons (|B|>0)High Energy Physics::ExperimentFísica de partículesExperimentsp p: colliding beamsstatisticalexperimental results
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Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC

2013

We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; EPLANET, ERC and NSRF, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT and NSRF, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Norway; MNiSW, Poland; GRICES and FCT, Portu…

Standard Modeldilepton: mass spectrumCiencias Físicas01 natural sciences7. Clean energySettore FIS/04 - Fisica Nucleare e SubnucleareHigh Energy Physics - ExperimentHiggs particle: hadroproduction//purl.org/becyt/ford/1 [https]High Energy Physics - Experiment (hep-ex)vector boson: fusion[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]QCBosonPhysicsHIGGS BOSONLarge Hadron Collidervector boson: pair productiontransverse energy: missing-energy4. EducationATLAS experimentSettore FIS/01 - Fisica SperimentaleATLAS3. Good healthMassless particleCERN LHC CollHiggs particle: massPhysical SciencesComputingMethodologies_DOCUMENTANDTEXTPROCESSINGHiggs boson7000: 8000 GeV-cmsFísica nuclearAtlasLhcNeutrinoHiggs particle: decay modesParticle Physics - ExperimentCIENCIAS NATURALES Y EXACTASp p: scatteringNuclear and High Energy PhysicsParticle physicsmass spectrum: (4lepton)530 PhysicsCiências Naturais::Ciências Físicas:Ciências Físicas [Ciências Naturais]FOS: Physical sciencesddc:500.2ATLASdetector; LHC; Higgsbosonproduction; diboson530Massless ParticlesNnlo QCDNuclear physics0103 physical sciencesFysikddc:530High Energy Physics010306 general physicsTransverse-MomentumCondensed Matter::Quantum GasesHiggs particle: couplingScience & Technologyhep-ex010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyFísicaQCD CorrectionsFermion//purl.org/becyt/ford/1.3 [https]Hadron CollidersDiboson ProductionAstronomíavector boson: leptonic decayHADRON-HADRON COLLISIONSProton-Proton CollisionsRoot-S=7 TevHiggs particle: hadroproduction ; Higgs particle: coupling ; vector boson: fusion ; p p: scattering ; CERN LHC Coll ; ATLAS ; Higgs particle: decay modes ; vector boson: pair production ; vector boson: leptonic decay ; mass spectrum: two-photon ; mass spectrum: (4lepton) ; dilepton: mass spectrum ; transverse energy: missing-energy ; Higgs particle: mass ; experimental results ; 7000: 8000 GeV-cmsExperimental High Energy PhysicsHigh Energy Physics::ExperimentCross-Sectionsmass spectrum: two-photonexperimental resultsLeptonBroken Symmetries
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Search for weakly decaying b -flavored pentaquarks

2018

Investigations of the existence of pentaquark states containing a single $b$ (anti)quark decaying weakly into four specific final states J/$\psi K^+\pi^- p$, J/$\psi K^- \pi^- p$, J/$\psi K^- \pi^+ p$, and $J/\psi \phi (1020) p$ are reported. The data sample corresponds to an integrated luminosity of 3.0/fb in 7 and 8 TeV pp collisions acquired with the LHCb detector. Signals are not observed and upper limits are set on the product of the production cross section times branching fraction with respect to that of the $\Lambda_b$.

baryon: exoticPhysics and Astronomy (miscellaneous)7000 GeV-cms8000 GeV-cms01 natural sciencesPhysics Particles & FieldsSettore FIS/04 - Fisica Nucleare e SubnucleareHigh Energy Physics - ExperimentLuminosityHigh Energy Physics - Experiment (hep-ex)Hadron-Hadron scattering (experiments)scattering [p p][PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]exotic [baryon]LHCb - Abteilung HintonpentaquarkPhysics8000 GeV-cmsPhysicsParticle physicsPentaquark3. Good healthchannel cross section: branching ratio: upper limitExotic baryonpentaquark --> J/psi(3100) K- pi+ pBranching fraction Hadron-Hadron scattering (experiments) QCDpentaquark --> J/psi(3100) K- pi- pCERN LHC Coll7000 GeV-cmsPhysical Sciencespentaquark --> J/psi(3100) Phi(1020) pBranching fractionLHCcolliding beams [p p]Particle Physics - ExperimentQuarkParticle physicsp p: scatteringFOS: Physical sciencesAstronomy & AstrophysicsHadronsNOmultiquark[ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex]0103 physical sciencesddc:530010306 general physicsLarge Hadron Collider (France and Switzerland)Science & Technologybranching ratio: upper limit [channel cross section]hep-ex010308 nuclear & particles physicsBranching fractionpentaquark --> J/psi(3100) K+ pi- pParticles and FieldGran Col·lisionador d'HadronsBottom quarkQCDLHC-BHEPLHCbHigh Energy Physics::ExperimentFísica de partículesExperimentsp p: colliding beamsexperimental resultsPhysical Review D
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Observation of the rare B(s)(0) + decay from the combined analysis of CMS and LHCb data.

2015

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported licence.-- et al.

fundamental particleCompact Muon Solenoidstandard model flavor changing neutral currentsradioisotope decayB physicGaussian methodMU(+)MU(-)Temel Bilimler (SCI)rare decay [B/s0]Elementary particleATLAS DETECTOR12.15.MmÇOK DİSİPLİNLİ BİLİMLERRARE B-MESON DECAYS7000 GeV-cms8000 GeV-cmsSettore ING-INF/01 - Elettronica01 natural sciences7. Clean energyddc:0702 CHARGED LEPTONSscattering [p p]High energy physics ; Experimental particle physics ; LHC ; CMS ; Standard ModelQC[Anahtar Kelime Yok]Large Hadron ColliderMedicine (all); Multidisciplinarystandard3. Good healthHigh Energy Physics - PhenomenologyCERN LHC CollFIS/01 - FISICA SPERIMENTALEpriority journalHiggs bosonScience & Technology - Other TopicsPARTICLE PHYSICSmass spectrum [dimuon]Protonviolationcolliding beams [p p]physicschemical analyzerMesonModels beyond the standard modelprobabilitymesonelectromagnetic radiationB/s0 --> muon+ muon-Nuclear physicsbranching ratio: measured [B0]SEARCHLeptonic semileptonic and radiative decays of bottom mesonRARE B-MESON DECAYS; MINIMAL FLAVOR VIOLATION; LHC; CMS DETECTOR; LHCb DETECTOR; SEARCH; MU(+)MU(-); B-S(0); B-0;B-MESON DECAYS; MINIMAL FLAVOR VIOLATION; 2 CHARGED LEPTONS; ATLAS; DETECTOR; SEARCH; MU(+)MU(-); B-S(0); B-0; COLLIDER; PARTICLE010306 general physicsScience & TechnologyMuonMULTIDISCIPLINARY SCIENCES010308 nuclear & particles physicsBranching fractionMeson Bnull hypothesisDoğa Bilimleri GenelElementary particlesLARGE HADRON COLLIDERHEPp(p)over-bar collisionsNATURAL SCIENCES GENERALrare decay [B0]13.20.HeMINIMAL FLAVOR VIOLATIONchemical analysisprecisionB0 --> muon+ muon-Física de partículesExperimental particle physicsleptonic decay [B0]Physics::Instrumentation and DetectorsPhysics beyond the Standard ModelB-meson decays; p(p)over-bar collisions; branching fraction; root-s=1.96 tev; search; mu(+)mu(-); b-0; b-s(0); violation; modelsLarge Hadron Collider (LHC)High Energy Physics - ExperimentSettore FIS/04 - Fisica Nucleare e SubnucleareNeutral currentCOLLIDER[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]uncertainty12.60.-iFlavour Physicmass spectrometryPhysicsExperimental particleMultidisciplinaryCMSMedicine (all)Temel BilimlerSettore FIS/01 - Fisica SperimentaleB-meson decaysATLASLarge Hadron Collider beautybranching ratio: measured [B/s0]root-s=1.96 tevNatural Sciences (SCI)LHCNatural SciencesPARTICLEdata processingParticle Physics - Experimentchemical reactionParticle physicsbranching fractionNOPARTICLE PHYSICS; LARGE HADRON COLLIDER; CMS; LHCBmodelsLHCBExperimental particle; physics; data processing; electromagnetic field; electromagnetic radiation; fundamental particle; Gaussian method; physics; precision; chemical analysis; chemical analyzer; chemical reaction; elementary particle; Large Hadron Collider beauty; mass spectrometry; meson; null hypothesis; prediction; priority journal; probability; radioisotope decay; standard; uncertainty;B-MESON DECAYSelectromagnetic fieldTheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITYRare Decay0103 physical sciencesElectromagnetic fieldB-0elementary particleSDG 7 - Affordable and Clean EnergyDETECTORCompact Muon SolenoidMultidisipliner/dk/atira/pure/sustainabledevelopmentgoals/affordable_and_clean_energyLHCb DETECTORCMS LHC Meson B Rare DecayMinimal flavor violationpredictionLeptonsLHC-Bleptonic decay [B/s0]LHCbRare decayMedicine (all) MultidisciplinaryRARE B-MESON DECAYS; MINIMAL FLAVOR VIOLATION; LHC; CMS DETECTOR; LHCb DETECTOR; SEARCH; MU(+)MU(-); B-S(0); B-0B-S(0)[PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph]High Energy Physics::ExperimentExperimentsexperimental resultsCMS DETECTOR
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Search for photonic signatures of gauge-mediated supersymmetry in 8TeV pp collisions with the ATLAS detector

2015

A search is presented for photonic signatures motivated by generalized models of gauge-mediated supersymmetry breaking. This search makes use of 20.3  fb[superscript −1] of proton-proton collision data at √s = 8  TeV recorded by the ATLAS detector at the LHC, and explores models dominated by both strong and electroweak production of supersymmetric partner states. Four experimental signatures incorporating an isolated photon and significant missing transverse momentum are explored. These signatures include events with an additional photon, lepton, b-quark jet, or jet activity not associated with any specific underlying quark flavor. No significant excess of events is observed above the Stand…

transverse momentum [photon]Большой адронный коллайдерCiencias FísicasPhysics beyond the Standard ModelPROTON-PROTON COLLISIONSFORTRAN CODEElementary particlesymmetry breaking [supersymmetry]gravitinoHigh Energy Physics - ExperimentMEASUREMENTSubatomär fysik//purl.org/becyt/ford/1 [https]High Energy Physics - Experiment (hep-ex)суперсимметрияSubatomic Physicsscattering [p p][PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]HADRON COLLIDERSGeneralLiterature_REFERENCE(e.g.dictionariesencyclopediasglossaries)QC8000 GeV-cmsPhysicsLarge Hadron ColliderJET ENERGYSettore FIS/01 - Fisica SperimentaleElectroweak interactionPhotonicSUPERGAUGE TRANSFORMATIONSSupersymmetryATLASbottom [jet]Supersymmetry breakingCERN LHC CollPhotonic signaturesgauge [mediation]Physical Sciencesflavor [quark]GravitinoLHCcolliding beams [p p]CIENCIAS NATURALES Y EXACTASsignatureParticle Physics - ExperimentParticle physicsNuclear and High Energy Physics530 PhysicsCiências Naturais::Ciências Físicas:Ciências Físicas [Ciências Naturais]FOS: Physical sciencesстолкновение частицpair production [neutralino]530MISSING TRANSVERSE-MOMENTUMNuclear physicsGauge-mediatedphotonic signatures; gauge-mediated supersymmetry; ATLAS detectorFysikddc:530High Energy PhysicsCiencias ExactasPROTON-PROTON COLLISIONS; MISSING TRANSVERSE-MOMENTUM; JET ENERGY; MEASUREMENT; ROOT-S=7 TEV; HADRON COLLIDERS; SUPERGAUGE TRANSFORMATIONS; FORTRAN CODE; MODEL; LHC; PERFORMANCEScience & Technologyelectroweak interactionATLAS detectorROOT-S=7 TEVHigh Energy Physics::PhenomenologyFísica//purl.org/becyt/ford/1.3 [https]PERFORMANCEAstronomíaMODELgravitationmissing-energy [transverse momentum]Proton-Proton CollisionsExperimental High Energy PhysicsHigh Energy Physics::ExperimentSupersymmetryATLAS детекторexperimental resultsLepton
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