Yayınlanmış 1 Ocak 2012
| Sürüm v1
Dergi makalesi
Açık
Search for Dark Matter and Large Extra Dimensions in pp Collisions Yielding a Photon and Missing Transverse Energy
Oluşturanlar
- 1. Yerevan Phys Inst, Yerevan 375036, Armenia
- 2. OeAW, Inst Hochenergiephys, Vienna, Austria
Açıklama
Results are presented from a search for new physics in the final state containing a photon (gamma) and missing transverse energy (is not an element of(T)). The data correspond to an integrated luminosity of 5.0 fb(-1) collected in pp collisions at root s = 7 TeV by the CMS experiment. The observed event yield agrees with standard-model expectations for the gamma + is not an element of(T) events. Using models for the production of dark-matter particles (chi), we set 90% confidence level (C. L.) upper limits of 13.6-15.4 fb on chi production in the gamma + is not an element of(T) state. These provide the most sensitive upper limits for spin-dependent chi-nucleon scattering for chi masses (M-chi) between 1 and 100 GeV. For spin-independent contributions, the present limits are extended to M-chi < 3.5 GeV. For models with 3-6 large extra dimensions, our data exclude extra-dimensional Planck scales between 1.64 and 1.73 TeV at 95% C.L.
Dosyalar
bib-09ed4d37-bb79-4b87-be3d-7092dd413b4d.txt
Dosyalar
(424 Bytes)
| Ad | Boyut | Hepisini indir |
|---|---|---|
|
md5:e80bb0a9d9c2be445b61c1dea3f0f487
|
424 Bytes | Ön İzleme İndir |