Measurements of T(t)over-Bar Spin Correlations and Top-Quark Polarization Using Dilepton Final States in Pp Collisions at Root S=7 Tev
| dc.contributor.author | Karapınar, Güler | |
| dc.coverage.doi | 10.1103/PhysRevLett.112.182001 | |
| dc.date.accessioned | 2021-01-24T18:47:18Z | |
| dc.date.available | 2021-01-24T18:47:18Z | |
| dc.date.issued | 2014 | |
| dc.description | PubMed: 24856688 | en_US |
| dc.description.abstract | Spin correlations and polarization in the top quark-antiquark system are measured using dilepton final states produced in pp collisions at the LHC at root s = 7 TeV. The data correspond to an integrated luminosity of 5.0 fb(-1) collected with the CMS detector. The measurements are performed using events with two oppositely charged leptons (electrons or muons), a significant imbalance in transverse momentum, and two or more jets, where at least one of the jets is identified as originating from a b quark. The spin correlations and polarization are measured through asymmetries in angular distributions of the two selected leptons, unfolded to the parton level. All measurements are found to be in agreement with predictions of the standard model. | en_US |
| dc.description.sponsorship | We would like to thank Professor W. Bernreuther and Professor Z.-G. Si for calculating the theoretical predictions of Fig. 1 and Table II for this Letter. We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staff at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centers and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MoST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); MoER, SF0690030s09 and ERDF (Estonia); Academy of Finland, MEC, and HIP ( Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); OTKA and NIH (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); NRF and WCU (Republic of Korea); LAS (Lithuania); MOE and UM (Malaysia); CINVESTAV, CONACYT, SEP, and UASLP-FAI (Mexico); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, RosAtom, RAS, and RFBR (Russia); MESTD (Serbia); SEIDI and CPAN (Spain); Swiss Funding Agencies (Switzerland); NSC (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (U. S.). | en_US |
| dc.identifier.doi | 10.1103/PhysRevLett.112.182001 | |
| dc.identifier.issn | 0031-9007 | |
| dc.identifier.issn | 1079-7114 | |
| dc.identifier.uri | https://doi.org/10.1103/PhysRevLett.112.182001 | |
| dc.identifier.uri | https://hdl.handle.net/11147/10624 | |
| dc.language.iso | en | en_US |
| dc.publisher | American Physical Society | en_US |
| dc.relation.ispartof | Physical Review Letters | en_US |
| dc.rights | info:eu-repo/semantics/openAccess | en_US |
| dc.title | Measurements of T(t)over-Bar Spin Correlations and Top-Quark Polarization Using Dilepton Final States in Pp Collisions at Root S=7 Tev | en_US |
| dc.type | Article | en_US |
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| gdc.description.department | İzmir Institute of Technology. Rectorate | en_US |
| gdc.description.issue | 18 | en_US |
| gdc.description.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
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| gdc.description.volume | 112 | en_US |
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| gdc.oaire.keywords | Spin Correlations | |
| gdc.oaire.keywords | transverse momentum: missing-energy | |
| gdc.oaire.keywords | 550 | |
| gdc.oaire.keywords | standard model: validity test | |
| gdc.oaire.keywords | pair production [top] | |
| gdc.oaire.keywords | pp | |
| gdc.oaire.keywords | PARTICLE PHYSICS; LARGE HADRON COLLIDER; CMS | |
| gdc.oaire.keywords | High Energy Physics - Experiment | |
| gdc.oaire.keywords | High Energy Physics - Experiment (hep-ex) | |
| gdc.oaire.keywords | correlation [spin] | |
| gdc.oaire.keywords | Spin Correlations; Top-Quark Polarization; Dilepton Final States; | |
| gdc.oaire.keywords | Polarization | |
| gdc.oaire.keywords | CERN | |
| gdc.oaire.keywords | [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex] | |
| gdc.oaire.keywords | scattering [p p] | |
| gdc.oaire.keywords | info:eu-repo/classification/ddc/530 | |
| gdc.oaire.keywords | Fisica delle particelle | |
| gdc.oaire.keywords | CMS | |
| gdc.oaire.keywords | Physics | |
| gdc.oaire.keywords | dilepton: final state | |
| gdc.oaire.keywords | ddc:530 | |
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| gdc.oaire.keywords | Top-Quark polarization | |
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| gdc.oaire.keywords | jet: bottom | |
| gdc.oaire.keywords | pp collisions | |
| gdc.oaire.keywords | physics | |
| gdc.oaire.keywords | tt¯ Spin correlations | |
| gdc.oaire.keywords | p p: scattering | |
| gdc.oaire.keywords | angular distribution: asymmetry | |
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| gdc.oaire.keywords | final state [dilepton] | |
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| gdc.oaire.keywords | CERN; CMS; pp; 7 TeV; Spin Correlations; Top Quark; Polarization | |
| gdc.oaire.keywords | LARGE HADRON COLLIDER | |
| gdc.oaire.keywords | LHC; HEP; CMS | |
| gdc.oaire.keywords | Physics and Astronomy | |
| gdc.oaire.keywords | missing-energy [transverse momentum] | |
| gdc.oaire.keywords | QC Physics / fizika | |
| gdc.oaire.keywords | Dilepton final states | |
| gdc.oaire.keywords | top: polarization | |
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