publication . Other literature type . Article . Preprint . 2016

A new method to distinguish hadronically decaying boosted Z bosons from W bosons using the ATLAS detector

Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Aben, R.; Abolins, M.; AbouZeid, O.S.; Abramowicz, H.; Abreu, H.; Abreu, R.; ...
Open Access
  • Published: 28 Apr 2016
  • Publisher: Springer Science and Business Media LLC
The distribution of particles inside hadronic jets produced in the decay of boosted W and Z bosons can be used to discriminate such jets from the continuum background. Given that a jet has been identified as likely resulting from the hadronic decay of a boosted W or Z boson, this paper presents a technique for further differentiating Z bosons from W bosons. The variables used are jet mass, jet charge, and a b-tagging discriminant. A likelihood tagger is constructed from these variables and tested in the simulation of W′→ WZ for bosons in the transverse momentum range 200 GeV < pT< 400 GeV in √s= 8 TeV pp collisions with the ATLAS detector at the LHC. For Z-boson...
arXiv: High Energy Physics::ExperimentHigh Energy Physics::PhenomenologyAstrophysics::High Energy Astrophysical PhenomenaCondensed Matter::Quantum Gases
free text keywords: Engineering (miscellaneous), Physics and Astronomy (miscellaneous), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], scattering [p p], colliding beams [p p], hadroproduction [vector boson], hadronic decay [vector boson], boosted particle [Z0], boosted particle [W], hadronic [jet], charge [jet], mass [jet], efficiency, ATLAS, transverse momentum dependence, CERN LHC Coll, performance, background, data analysis method, experimental results, 8000 GeV-cms, Settore FIS/01 - Fisica Sperimentale, Settore FIS/04 - Fisica Nucleare e Subnucleare, Particle Physics - Experiment, ATLAS, детектор, протон-протонные столкновения, Большой адронный коллайдер, W-бозоны, Z-бозоны, /dk/atira/pure/researchoutput/pubmedpublicationtype/D016428, Journal Article, QC, Engineering (miscellaneous); Physics and Astronomy (miscellaneous), High Energy Physics - Experiment, Subatomic Physics, Subatomär fysik, Herwig Plus, Fragmentation, Symmetry, boosted jets, jet composition, W/Z boson, Astronomía, Ciencias Físicas, CIENCIAS NATURALES Y EXACTAS, Física, Z bosons, W bosons, jet mass, jet charge, b-tagging discriminant, Regular Article - Theoretical Physics, Ciências Naturais::Ciências Físicas, Science & Technology, :Ciências Físicas [Ciências Naturais], bosons; ATLAS detector, 530, ddc:530, Atlas detector, Hadron, Atlas (anatomy), medicine.anatomical_structure, medicine, W and Z bosons, Particle physics, Continuum (design consultancy), Physics, Nuclear physics, Boson, ATLAS experiment
Funded by
European Particle physics Latin American NETwork
  • Funder: European Commission (EC)
  • Project Code: 246806
  • Funding stream: FP7 | SP3 | PEOPLE
EGI FederationEGI virtual organizations: atlas
89 references, page 1 of 6

1. A. Altheimer et al., Boosted objects and jet substructure at the LHC. Report of BOOST2012, held at IFIC Valencia, 23rd-27th of July 2012. Eur. Phys. J. C 74, 2792 (2014). doi:10.1140/epjc/ s10052-014-2792-8. arXiv:1311.2708 [hep-ex] [OpenAIRE]

2. ATLAS Collaboration, Performance of Boosted W Boson Identification with the ATLAS Detector (2014)

3. C.M.S. Collaboration, Identification techniques for highly boosted W bosons that decay into hadrons. JHEP 1412, 017 (2014). doi:10. 1007/JHEP12(2014)017. arXiv:1410.4227 [hep-ex]

4. S.L. Glashow, J. Iliopoulos, L. Maiani, Weak interactions with lepton-hadron symmetry. Phys. Rev. D 2, 1285-1292 (1970). doi:doi:10.1103/PhysRevD.2.1285 [OpenAIRE]

5. ATLAS Collaboration, A search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at √s = 7 TeV. JHEP 1209, 139 (2012). doi:10. 1007/JHEP09(2012)139. arXiv:1206.0257 [hep-ex]

6. CMS Collaboration, Search for flavor-changing neutral currents in top-quark decays t → Z q in pp collisions at √s = 8 TeV. Phys. Rev. Lett. 112, 171802 (2014). doi:10.1103/PhysRevLett. 112.171802. arXiv:1312.4194 [hep-ex]

7. J. Thaler, K. Van Tilburg, Identifying boosted objects with N-subjettiness. JHEP 1103, 015 (2011). doi:10.1007/ JHEP03(2011)015. arXiv:1011.2268 [hep-ph]

8. T. Sjöstrand, S. Mrenna, P.Z. Skands, A brief introduction to PYTHIA 8.1. Comput. Phys. Commun. 178, 852-867 (2008). doi:10.1016/j.cpc.2008.01.036. arXiv:0710.3820 [hep-ph]

9. H.-L. Lai et al., New parton distributions for collider physics. Phys. Rev. D 82, 074024 (2010). doi:10.1103/PhysRevD.82.074024. arXiv:1007.2241 [hep-ph]

10. J. Gao et al., CT10 next-to-next-to-leading order global analysis of QCD. Phys. Rev. D 89, 033009 (2014). doi:10.1103/PhysRevD. 89.033009. arXiv:1302.6246 [hep-ph]

11. ATLAS Collaboration, Summary of ATLAS Pythia 8 Tunes. https:// (2012)

12. T. Sjöstrand, P.Z. Skands, Transverse-momentum-ordered showers and interleaved multiple interactions. Eur. Phys. J. C 39, 129-154 (2005). doi:10.1140/epjc/s2004-02084-y. arXiv:hep-ph/0408302 [hep-ph] [OpenAIRE]

13. B. Andersson et al., Parton fragmentation and string dynamics. Phys. Rep. 97, 31 (1983). doi:10.1016/0370-1573(83)90080-7

14. M. Bähr et al., Herwig++ physics and manual. Eur. Phys. J. C 58, 639-707 (2008). doi:10.1140/epjc/s10052-008-0798-9. arXiv:0803.0883 [hep-ph]

15. S. Gieseke, P. Stephens, B. Webber, New formalism for QCD parton showers. JHEP 0312, 045 (2003). doi:10.1088/1126-6708/2003/ 12/045. arXiv:hep-ph [OpenAIRE]

89 references, page 1 of 6
Any information missing or wrong?Report an Issue