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Test of the 1.4 TeV DAMPE electron excess with preliminary H.E.S.S. measurement.
- Source :
-
Nuclear Physics B . Sep2018, Vol. 934, p396-407. 12p. - Publication Year :
- 2018
-
Abstract
- In November 2017, the DAMPE collaboration announced their first measurement of the electron spectrum between energies of 25 GeV and 4.6 TeV, including a narrow peak at ∼1.4 TeV with marginal significance. However, this feature is not observed in the larger statistic H.E.S.S. spectrum reported a few month earlier in the ICRC 2017. In this work, we perform a likelihood ratio method to test whether the DAMPE excess is compatible with the preliminary H.E.S.S. spectrum. By assuming the performance of the H.E.S.S. analysis is smooth with the electron energy, a 95 % CL upper limit on a stable DAMPE-like signal is set at ∼ 17 % of the DAMPE excess flux. The further investigation will rely on the formal publication of H.E.S.S. spectrum and higher statistic spectrum of DAMPE in the future. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 05503213
- Volume :
- 934
- Database :
- Academic Search Index
- Journal :
- Nuclear Physics B
- Publication Type :
- Academic Journal
- Accession number :
- 131495389
- Full Text :
- https://doi.org/10.1016/j.nuclphysb.2018.07.018