publication . Article . Other literature type . Preprint . Report . 2016

Search for new phenomena in different-flavour high-mass dilepton final states in pp collisions at s=13 Tev with the ATLAS detector

Aaboud, M.; Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Abeloos, B.; Aben, R.; AbouZeid, O.; Abraham, N.; Abramowicz, H.; ...
Open Access English
  • Published: 04 Oct 2016
Abstract
A search is performed for a heavy particle decaying into different flavour dilepton pairs (eμ, eτ or μτ), using 3.2 fb−1 of proton–proton collision data at s√=13 TeV collected in 2015 by the ATLAS detector at the Large Hadron Collider. No excess over the Standard Model prediction is observed. Limits at the 95 % credibility level are set on the mass of a Z′ boson with lepton-flavour-violating couplings at 3.0, 2.7 and 2.6 TeV, and on the mass of a supersymmetric τ sneutrino with R-parity-violating couplings at 2.3, 2.2 and 1.9 TeV, for eμ, eτ and μτ final states, respectively. The results are also interpreted as limits on the threshold mass for quantum black hole...
Subjects
arXiv: High Energy Physics::ExperimentHigh Energy Physics::Phenomenology
free text keywords: Subatomic Physics, Subatomär fysik, Ciencias Exactas, Física, Partículas Elementales, supersymmetry, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Engineering (miscellaneous); Physics and Astronomy (miscellaneous), Physik, high-mass dilepton; pp collisions; ATLAS detector, 530, 530 Physics, 510 Mathematics, Regular Article - Experimental Physics, Science & Technology, Physical Sciences, Physics, Particles & Fields, Physics, DIMENSIONS, LHC, SUPERSYMMETRY, HIERARCHY, EXTENSION, DECAY, scattering [p p], colliding beams [p p], final state [dilepton], threshold [mass], production [black hole], quantum [black hole], heavy [particle], ATLAS, CERN LHC Coll, coupling [sneutrino], flavor: violation [lepton], violation [R parity], experimental results, 13000 GeV-cms, Particle Physics - Experiment, p p: scattering; p p: colliding beams; dilepton: final state; mass: threshold; black hole: production; black hole: quantum; particle: heavy; ATLAS; CERN LHC Coll; supersymmetry; sneutrino: coupling; lepton: flavor: violation; R parity: violation; experimental results; 13000 GeV-cms, Settore FIS/01 - Fisica Sperimentale, Settore FIS/04 - Fisica Nucleare e Subnucleare, :Ciências Físicas [Ciências Naturais], Science & Technology, Ciências Naturais::Ciências Físicas, Large Hadron Collider, Standard Model, High-Mass, Dileplton, Física de Partículas y Campos, Ciencias Físicas, CIENCIAS NATURALES Y EXACTAS, QC, DIMENSIONS; LHC; SUPERSYMMETRY; HIERARCHY; EXTENSION; DECAY, /dk/atira/pure/researchoutput/pubmedpublicationtype/D016428, Journal Article, High Energy Physics - Experiment, Physics and Astronomy (miscellaneous), Engineering (miscellaneous), ddc:530, ddc:500.2, Flavour, Physics, Atlas detector, Particle physics, High mass
Funded by
EC| EPLANET
Project
EPLANET
European Particle physics Latin American NETwork
  • Funder: European Commission (EC)
  • Project Code: 246806
  • Funding stream: FP7 | SP3 | PEOPLE
,
SNSF| Teilchenphysik-Experimente und Entwicklung von Teilchen-Detektoren
Project
  • Funder: Swiss National Science Foundation (SNSF)
  • Project Code: 200020_163402
  • Funding stream: Project funding | Project funding (Div. I-III)
Communities
EGI FederationEGI virtual organizations: atlas
115 references, page 1 of 8

1. P. Langacker, The physics of heavy Z gauge bosons. Rev. Mod. Phys. 81, 1199-1228 (2009). doi:10.1103/RevModPhys.81.1199. arXiv:0801.1345 [hep-ph]

2. G.R. Farrar, P. Fayet, Phenomenology of the production, decay, and detection of new hadronic states associated with supersymmetry. Phys. Lett. B 76, 575-579 (1978). doi:10.1016/ 0370-2693(78)90858-4 [OpenAIRE]

3. R. Barbier et al., R-parity violating supersymmetry. Phys. Rept. 420, 1-202 (2005). doi:10.1016/j.physrep.2005.08.006. arXiv:hep-ph/0406039

4. Y.A. Golfand, E.P. Likhtman, Extension of the algebra of poincare group generators and violation of p invariance. JETP Lett. 13, 323- 326 (1971)

5. Y.A. Golfand, E.P. Likhtman, Extension of the algebra of poincare group generators and violation of p invariance. Pisma Zh. Eksp. Teor. Fiz.13, 452 (1971)

6. D.V. Volkov, V.P. Akulov, Is the neutrino a goldstone particle? Phys. Lett. B 46, 109-110 (1973). doi:10.1016/0370-2693(73)90490-5 [OpenAIRE]

7. J. Wess, B. Zumino, Supergauge transformations in fourdimensions. Nucl. Phys. B 70, 39-50 (1974). doi:10.1016/ 0550-3213(74)90355-1 [OpenAIRE]

8. J. Wess, B. Zumino, Supergauge invariant extension of quantum electrodynamics. Nucl. Phys. B 78, 1 (1974). doi:10.1016/ 0550-3213(74)90112-6 [OpenAIRE]

9. S. Ferrara, B. Zumino, Supergauge invariant Yang-Mills theories. Nucl. Phys. B 79, 413 (1974). doi:10.1016/0550-3213(74)90559-8 [OpenAIRE]

10. A. Salam, J.A. Strathdee, Supersymmetry and nonabelian gauges. Phys. Lett. B 51, 353-355 (1974). doi:10.1016/ 0370-2693(74)90226-3

11. D.M. Gingrich, Quantum black holes with charge, colour, and spin at the LHC. J. Phys. G 37, 105008 (2010). doi:10.1088/0954-3899/ 37/10/105008. arXiv:0912.0826 [hep-ph] [OpenAIRE]

12. ATLAS Collaboration, Search for a heavy neutral particle decaying to eμ, eτ , or μτ in pp collisions at √s = 8 TeV with the ATLAS detector. Phys. Rev. Lett. 115, 031801 (2015). arXiv:1503.04430v1 [hep-ex]

13. CMS Collaboration, Search for lepton flavour violating decays of heavy resonances and quantum black holes to an eμ pair in protonproton collisions at √s = 8 TeV. Eur. Phys. J. C 76, 317 (2016). arXiv:1604.05239 [hep-ex]

14. N. Arkani-Hamed, S. Dimopoulos, G. Dvali, The Hierarchy problem and new dimensions at a millimeter. Phys. Lett. B 429, 263-272 (1998). doi:10.1016/S0370-2693(98)00466-3. arXiv:hep-ph/9803315 [hep-ph]

15. L. Randall, R. Sundrum, A large mass hierarchy from a small extra dimension. In: Phys. Rev. Lett. 83, 3370-3373 (1999). doi:10.1103/ PhysRevLett.83.3370. arXiv:hep- th/9905221 [hep-th]

115 references, page 1 of 8
Abstract
A search is performed for a heavy particle decaying into different flavour dilepton pairs (eμ, eτ or μτ), using 3.2 fb−1 of proton–proton collision data at s√=13 TeV collected in 2015 by the ATLAS detector at the Large Hadron Collider. No excess over the Standard Model prediction is observed. Limits at the 95 % credibility level are set on the mass of a Z′ boson with lepton-flavour-violating couplings at 3.0, 2.7 and 2.6 TeV, and on the mass of a supersymmetric τ sneutrino with R-parity-violating couplings at 2.3, 2.2 and 1.9 TeV, for eμ, eτ and μτ final states, respectively. The results are also interpreted as limits on the threshold mass for quantum black hole...
Subjects
arXiv: High Energy Physics::ExperimentHigh Energy Physics::Phenomenology
free text keywords: Subatomic Physics, Subatomär fysik, Ciencias Exactas, Física, Partículas Elementales, supersymmetry, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Engineering (miscellaneous); Physics and Astronomy (miscellaneous), Physik, high-mass dilepton; pp collisions; ATLAS detector, 530, 530 Physics, 510 Mathematics, Regular Article - Experimental Physics, Science & Technology, Physical Sciences, Physics, Particles & Fields, Physics, DIMENSIONS, LHC, SUPERSYMMETRY, HIERARCHY, EXTENSION, DECAY, scattering [p p], colliding beams [p p], final state [dilepton], threshold [mass], production [black hole], quantum [black hole], heavy [particle], ATLAS, CERN LHC Coll, coupling [sneutrino], flavor: violation [lepton], violation [R parity], experimental results, 13000 GeV-cms, Particle Physics - Experiment, p p: scattering; p p: colliding beams; dilepton: final state; mass: threshold; black hole: production; black hole: quantum; particle: heavy; ATLAS; CERN LHC Coll; supersymmetry; sneutrino: coupling; lepton: flavor: violation; R parity: violation; experimental results; 13000 GeV-cms, Settore FIS/01 - Fisica Sperimentale, Settore FIS/04 - Fisica Nucleare e Subnucleare, :Ciências Físicas [Ciências Naturais], Science & Technology, Ciências Naturais::Ciências Físicas, Large Hadron Collider, Standard Model, High-Mass, Dileplton, Física de Partículas y Campos, Ciencias Físicas, CIENCIAS NATURALES Y EXACTAS, QC, DIMENSIONS; LHC; SUPERSYMMETRY; HIERARCHY; EXTENSION; DECAY, /dk/atira/pure/researchoutput/pubmedpublicationtype/D016428, Journal Article, High Energy Physics - Experiment, Physics and Astronomy (miscellaneous), Engineering (miscellaneous), ddc:530, ddc:500.2, Flavour, Physics, Atlas detector, Particle physics, High mass
Funded by
EC| EPLANET
Project
EPLANET
European Particle physics Latin American NETwork
  • Funder: European Commission (EC)
  • Project Code: 246806
  • Funding stream: FP7 | SP3 | PEOPLE
,
SNSF| Teilchenphysik-Experimente und Entwicklung von Teilchen-Detektoren
Project
  • Funder: Swiss National Science Foundation (SNSF)
  • Project Code: 200020_163402
  • Funding stream: Project funding | Project funding (Div. I-III)
Communities
EGI FederationEGI virtual organizations: atlas
115 references, page 1 of 8

1. P. Langacker, The physics of heavy Z gauge bosons. Rev. Mod. Phys. 81, 1199-1228 (2009). doi:10.1103/RevModPhys.81.1199. arXiv:0801.1345 [hep-ph]

2. G.R. Farrar, P. Fayet, Phenomenology of the production, decay, and detection of new hadronic states associated with supersymmetry. Phys. Lett. B 76, 575-579 (1978). doi:10.1016/ 0370-2693(78)90858-4 [OpenAIRE]

3. R. Barbier et al., R-parity violating supersymmetry. Phys. Rept. 420, 1-202 (2005). doi:10.1016/j.physrep.2005.08.006. arXiv:hep-ph/0406039

4. Y.A. Golfand, E.P. Likhtman, Extension of the algebra of poincare group generators and violation of p invariance. JETP Lett. 13, 323- 326 (1971)

5. Y.A. Golfand, E.P. Likhtman, Extension of the algebra of poincare group generators and violation of p invariance. Pisma Zh. Eksp. Teor. Fiz.13, 452 (1971)

6. D.V. Volkov, V.P. Akulov, Is the neutrino a goldstone particle? Phys. Lett. B 46, 109-110 (1973). doi:10.1016/0370-2693(73)90490-5 [OpenAIRE]

7. J. Wess, B. Zumino, Supergauge transformations in fourdimensions. Nucl. Phys. B 70, 39-50 (1974). doi:10.1016/ 0550-3213(74)90355-1 [OpenAIRE]

8. J. Wess, B. Zumino, Supergauge invariant extension of quantum electrodynamics. Nucl. Phys. B 78, 1 (1974). doi:10.1016/ 0550-3213(74)90112-6 [OpenAIRE]

9. S. Ferrara, B. Zumino, Supergauge invariant Yang-Mills theories. Nucl. Phys. B 79, 413 (1974). doi:10.1016/0550-3213(74)90559-8 [OpenAIRE]

10. A. Salam, J.A. Strathdee, Supersymmetry and nonabelian gauges. Phys. Lett. B 51, 353-355 (1974). doi:10.1016/ 0370-2693(74)90226-3

11. D.M. Gingrich, Quantum black holes with charge, colour, and spin at the LHC. J. Phys. G 37, 105008 (2010). doi:10.1088/0954-3899/ 37/10/105008. arXiv:0912.0826 [hep-ph] [OpenAIRE]

12. ATLAS Collaboration, Search for a heavy neutral particle decaying to eμ, eτ , or μτ in pp collisions at √s = 8 TeV with the ATLAS detector. Phys. Rev. Lett. 115, 031801 (2015). arXiv:1503.04430v1 [hep-ex]

13. CMS Collaboration, Search for lepton flavour violating decays of heavy resonances and quantum black holes to an eμ pair in protonproton collisions at √s = 8 TeV. Eur. Phys. J. C 76, 317 (2016). arXiv:1604.05239 [hep-ex]

14. N. Arkani-Hamed, S. Dimopoulos, G. Dvali, The Hierarchy problem and new dimensions at a millimeter. Phys. Lett. B 429, 263-272 (1998). doi:10.1016/S0370-2693(98)00466-3. arXiv:hep-ph/9803315 [hep-ph]

15. L. Randall, R. Sundrum, A large mass hierarchy from a small extra dimension. In: Phys. Rev. Lett. 83, 3370-3373 (1999). doi:10.1103/ PhysRevLett.83.3370. arXiv:hep- th/9905221 [hep-th]

115 references, page 1 of 8
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