4.4 Article

Sensitivity of the SHiP experiment to Heavy Neutral Leptons

Journal

JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 4, Pages -

Publisher

SPRINGER
DOI: 10.1007/JHEP04(2019)077

Keywords

Beyond Standard Model; Fixed target experiments

Funding

  1. National Research Foundation of Korea [2018R1A2B2007757, 2018R1D1A3B07050649, 2018R1D1A1B07050701, 2017R1D1A1B03036042, 2017R1A6A3A01075752, 2016R1A2B4012302, 2016R1A6A3A11930680]
  2. European Research Council (ERC) under the European Union [694896]
  3. Russian Foundation for Basic Research (RFBR)
  4. TAEK of Turkey
  5. STFC [ST/N000455/1, ST/S000909/1, ST/N000242/1, 1708166] Funding Source: UKRI
  6. Science and Technology Facilities Council [ST/N000242/1, ST/N000455/1, ST/S000909/1] Funding Source: researchfish
  7. National Research Foundation of Korea [2016R1A2B4012302, 2018R1A2B2007757, 2017R1A6A3A01075752, 2018R1D1A3B07050649, 2017R1D1A1B03036042, 2016R1A6A3A11930680, 2018R1D1A1B07050701] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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Heavy Neutral Leptons (HNLs) are hypothetical particles predicted by many extensions of the Standard Model. These particles can, among other things, explain the origin of neutrino masses, generate the observed matter-antimatter asymmetry in the Universe and provide a dark matter candidate. The SHiP experiment will be able to search for HNLs produced in decays of heavy mesons and travelling distances ranging between O(50 m) and tens of kilometers before decaying. We present the sensitivity of the SHiP experiment to a number of HNL's benchmark models and provide a way to calculate the SHiP's sensitivity to HNLs for arbitrary patterns of flavour mixings. The corresponding tools and data files are also made publicly available.

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