Published September 6, 2013 | Version v1
Publication Open

Search for excited electrons and muons in $\sqrt {s}=8$ TeV proton–proton collisions with the ATLAS detector

Creators

  • 1. University of Freiburg
  • 2. University of Bonn
  • 3. University of Oklahoma
  • 4. Institute for High Energy Physics
  • 5. Universitat Autònoma de Barcelona
  • 6. French National Centre for Scientific Research
  • 7. University of Paris-Sud
  • 8. Institut National de Physique Nucléaire et de Physique des Particules
  • 9. Azerbaijan National Academy of Sciences
  • 10. National Institute for Subatomic Physics
  • 11. University of Amsterdam
  • 12. Oklahoma State University
  • 13. Michigan State University
  • 14. University of Toronto
  • 15. Tel Aviv University
  • 16. Institut de Recherche sur les Lois Fondamentales de l'Univers
  • 17. Atomic Energy and Alternative Energies Commission
  • 18. CEA Saclay
  • 19. Stockholm University
  • 20. The Abdus Salam International Centre for Theoretical Physics (ICTP)
  • 21. King's College London
  • 22. University of Udine
  • 23. AGH University of Krakow
  • 24. Brookhaven National Laboratory
  • 25. Hampton University
  • 26. Yale University
  • 27. Ludwig-Maximilians-Universität München
  • 28. Rutherford Appleton Laboratory
  • 29. Brandeis University
  • 30. University of Belgrade
  • 31. LIP - Laboratory of Instrumentation and Experimental Particle Physics
  • 32. Universidad de Granada
  • 33. University of Bern
  • 34. Boston University
  • 35. Stony Brook University
  • 36. Joint Institute for Nuclear Research
  • 37. The University of Texas at Dallas
  • 38. University of Rome Tor Vergata
  • 39. INFN Sezione di Roma II
  • 40. Lund University
  • 41. The University of Tokyo
  • 42. P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  • 43. Royal Holloway University of London
  • 44. University of Victoria
  • 45. Laboratory of Subatomic Physics and Cosmology
  • 46. Joseph Fourier University
  • 47. Instituto de Física La Plata
  • 48. Consejo Nacional de Investigaciones Científicas y Técnicas
  • 49. Universidad Nacional de La Plata
  • 50. European Organization for Nuclear Research
  • 51. INFN Sezione di Milano
  • 52. University of Geneva
  • 53. National Technical University of Athens
  • 54. Humboldt-Universität zu Berlin
  • 55. Aix-Marseille University
  • 56. Fermi National Accelerator Laboratory
  • 57. University of Chicago
  • 58. University of Birmingham
  • 59. Lancaster University
  • 60. University of Liverpool
  • 61. University of Glasgow
  • 62. University of Manchester
  • 63. INFN Sezione di Napoli
  • 64. Weizmann Institute of Science
  • 65. University of Copenhagen
  • 66. Columbia University
  • 67. High Energy Accelerator Research Organization
  • 68. Universidade Federal do Rio de Janeiro
  • 69. University of Lisbon
  • 70. Heidelberg University
  • 71. University of Milan
  • 72. National and Kapodistrian University of Athens
  • 73. TU Dresden
  • 74. Budker Institute of Nuclear Physics
  • 75. Siberian Branch of the Russian Academy of Sciences
  • 76. National Laboratory of Frascati
  • 77. Moscow Engineering Physics Institute
  • 78. Slovak Academy of Sciences
  • 79. Institute of Experimental Physics
  • 80. INFN Sezione di Roma I
  • 81. Obayashi (Japan)
  • 82. Nagoya University
  • 83. University of Oxford
  • 84. SLAC National Accelerator Laboratory
  • 85. Duke University
  • 86. Institute of Particle Physics
  • 87. Université de Montréal

Description

The ATLAS detector at the Large Hadron Collider is used to search for excited electrons and excited muons in the channel pp → ℓℓ* → ℓℓγ, assuming that excited leptons are produced via contact interactions. The analysis is based on 13 fb−1 of pp collisions at a centre-of-mass energy of 8 TeV. No evidence for excited leptons is found, and a limit is set at the 95% credibility level on the cross section times branching ratio as a function of the excited-lepton mass mℓ*. For mℓ* ⩾ 0.8 TeV, the respective upper limits on σB(ℓ* → ℓγ) are 0.75 and 0.90 fb for the e* and μ* searches. Limits on σB are converted into lower bounds on the compositeness scale Λ. In the special case where Λ = mℓ*, excited-electron and excited-muon masses below 2.2 TeV are excluded.

⚠️ This is an automatic machine translation with an accuracy of 90-95%

Translated Description (Arabic)

يُستخدم كاشف أطلس في مصادم الهادرونات الكبير للبحث عن الإلكترونات المستثارة والميونات المستثارة في القناة ص * * غ، على → افتراض أن → اللبتونات المستثارة يتم إنتاجها عن طريق تفاعلات التلامس. يعتمد التحليل على 13 fb-1 من الاصطدامات pp عند طاقة مركز الكتلة البالغة 8 TeV. لم يتم العثور على أي دليل على اللبتونات المتحمسة، وتم تعيين حد عند مستوى المصداقية 95 ٪ على المقطع العرضي مضروبا في نسبة التفرع كدالة لكتلة الليبتون المتحمس م*. بالنسبة إلىM * * 0.8 TeV، فإن الحدود العليا ذات الصلة على σB (X *) هي 0.75 و → 0.90 fb لعمليات البحث e* و μ*. يتم تحويل الحدود على σB إلى حدود أقل على مقياس التركيب. في الحالة الخاصة التي يكون فيها = م *، يتم استبعاد كتل الإلكترون المتحمس والميون المتحمس التي تقل عن 2.2 تيرا إلكترون فولت.

Translated Description (French)

Le détecteur ATLAS du Grand collisionneur de hadrons est utilisé pour rechercher des électrons excités et des muons excités dans le canal pp ℓℓ * → ℓℓγ, → en supposant que les leptons excités sont produits par des interactions de contact. L'analyse est basée sur 13 fb−1 de collisions pp à une énergie de centre de masse de 8 TeV. Aucune preuve de leptons excités n'est trouvée, et une limite est fixée au niveau de crédibilité de 95 % sur le rapport section efficace/ramification en fonction de la masse de leptons excités mℓ*. Pour mℓ* ≃ 0,8 TeV, les limites supérieures respectives de σB(ℓ* → ℓγ) sont 0,75 et 0,90 fb pour les recherches e* et μ*. Les limites sur σB sont converties en limites inférieures sur l'échelle de composition Λ. Dans le cas particulier où Λ = mℓ*, les masses d'électrons excités et de muons excités inférieures à 2,2 TeV sont exclues.

Translated Description (Spanish)

El detector ATLAS en el Gran Colisionador de Hadrones se utiliza para buscar electrones excitados y muones excitados en el canal pp ℓℓ * ℓℓγ→, suponiendo que → los leptones excitados se producen a través de interacciones de contacto. El análisis se basa en 13 fb−1 de colisiones de pp a una energía del centro de masa de 8 TeV. No se encuentra evidencia de leptones excitados, y se establece un límite en el nivel de credibilidad del 95% en la sección transversal multiplicado por la relación de ramificación en función de la masa de leptones excitados ml*. Para mℓ* 0,8 TeV, los límites superiores respectivos en σB(ℓ* → ℓγ) son 0,75 y 0,90 fb para las búsquedas e* y μ*. Los límites de σB se convierten en límites inferiores en la escala de composición Λ. En el caso especial en el que Λ = mℓ*, se excluyen las masas de electrones excitados y de muones excitados por debajo de 2,2 TeV.

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Additional details

Additional titles

Translated title (Arabic)
ابحث عن الإلكترونات والميونات المتحمسة في $\sqrt {s}=8 $ TeV تصادمات البروتون والبروتون مع كاشف أطلس
Translated title (French)
Recherche d'électrons et de muons excités dans les collisions proton–proton $ \sqrt {s}=8 $ TeV avec le détecteur ATLAS
Translated title (Spanish)
Busca electrones y muones excitados en $\sqrt {s}=8 $ TeV colisiones protón-protón con el detector ATLAS

Identifiers

Other
https://openalex.org/W2142796442
DOI
10.1088/1367-2630/15/9/093011

Is supplement to
https://openalex.org/W749106200 (Other)
https://openalex.org/W4287119131 (Other)
https://openalex.org/W4224874616 (Other)
https://openalex.org/W3189100874 (Other)
https://openalex.org/W3158032548 (Other)
https://openalex.org/W3023924255 (Other)
https://openalex.org/W2394800957 (Other)
https://openalex.org/W2315184597 (Other)
https://openalex.org/W2099562022 (Other)
https://openalex.org/W1983235757 (Other)

GreSIS Basics Section

Is Global South Knowledge
Yes
Country
Brazil

References

  • https://openalex.org/W1931066666
  • https://openalex.org/W1963602078
  • https://openalex.org/W1972462163
  • https://openalex.org/W1973969726
  • https://openalex.org/W1979734269
  • https://openalex.org/W1995881051
  • https://openalex.org/W1999532403
  • https://openalex.org/W2001879468
  • https://openalex.org/W2008783260
  • https://openalex.org/W2024668988
  • https://openalex.org/W2045806633
  • https://openalex.org/W2047610780
  • https://openalex.org/W2065816602
  • https://openalex.org/W2072108972
  • https://openalex.org/W2087192664
  • https://openalex.org/W2090940374
  • https://openalex.org/W2111074780
  • https://openalex.org/W2128158076
  • https://openalex.org/W2130052854
  • https://openalex.org/W2136044884
  • https://openalex.org/W2142656921
  • https://openalex.org/W2149145907
  • https://openalex.org/W2151165908
  • https://openalex.org/W2163097950
  • https://openalex.org/W2169707159
  • https://openalex.org/W2327733488
  • https://openalex.org/W2334765411
  • https://openalex.org/W2467151777
  • https://openalex.org/W2595862429
  • https://openalex.org/W2626101529
  • https://openalex.org/W2922506210
  • https://openalex.org/W2952213464
  • https://openalex.org/W3022335650
  • https://openalex.org/W3100817596
  • https://openalex.org/W3103374326
  • https://openalex.org/W3104585359