Yayınlanmış 1 Ocak 2016
| Sürüm v1
Dergi makalesi
Açık
Search for dark matter and unparticles produced in association with a Z boson in proton-proton collisions at root s=8 TeV
Yazarlar/Oluşturanlar
- 1. Yerevan Phys Inst, Yerevan 375036, Armenia
- 2. OeAW, Inst Hochenergiephys, Vienna, Austria
Açıklama
A search for evidence of particle dark matter (DM) and unparticle production at the LHC has been performed using events containing two charged leptons, consistent with the decay of a Z boson, and large missing transverse momentum. This study is based on data collected with the CMS detector corresponding to an integrated luminosity of 19.7 fb(-1) of pp collisions at the LHC at a center-of-mass energy of 8 TeV. No significant excess of events is observed above the number expected from the standard model contributions. The results are interpreted in terms of 90% confidence level limits on the DM-nucleon scattering cross section, as a function of the DM particle mass, for both spin-dependent and spin-independent scenarios. Limits are set on the effective cutoff scale., and on the annihilation rate for DM particles, assuming that their branching fraction to quarks is 100%. Additionally, the most stringent 95% confidence level limits to date on the unparticle model parameters are obtained.
Dosyalar
bib-aba2b513-664c-4e6c-9892-33ed47c0c9c7.txt
Dosyalar
(422 Bytes)
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md5:dd74672e18174ce2f6144dec1ea722ff
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422 Bytes | Ön İzleme İndir |