Results from 730 kg days of the CRESST-II Dark Matter search (Englisch)

In: The European Physical Journal C   ;  72 ,  4  ;  1-22  ;  2012

Wie erhalte ich diesen Titel?

Freier Zugriff

Abstract The CRESST-II cryogenic Dark Matter search, aiming at detection of WIMPs via elastic scattering off nuclei in CaWO4 crystals, completed 730 kg days of data taking in 2011. We present the data collected with eight detector modules, each with a two-channel readout; one for a phonon signal and the other for coincidently produced scintillation light. The former provides a precise measure of the energy deposited by an interaction, and the ratio of scintillation light to deposited energy can be used to discriminate different types of interacting particles and thus to distinguish possible signal events from the dominant backgrounds. Sixty-seven events are found in the acceptance region where a WIMP signal in the form of low energy nuclear recoils would be expected. We estimate background contributions to this observation from four sources: (1) “leakage” from the e/γ-band (2) “leakage” from the α-particle band (3) neutrons and (4) 206Pb recoils from 210Po decay. Using a maximum likelihood analysis, we find, at a statistical significance of more than 4σ, that these sources alone are not sufficient to explain the data. The addition of a signal due to scattering of relatively light WIMPs could account for this discrepancy, and we determine the associated WIMP parameters.

Inhaltsverzeichnis – Band 72, Ausgabe 4

Zeige alle Jahrgänge und Ausgaben

Die Inhaltsverzeichnisse werden automatisch erzeugt und basieren auf den im Index des TIB-Portals verfügbaren Einzelnachweisen der enthaltenen Beiträge. Die Anzeige der Inhaltsverzeichnisse kann daher unvollständig oder lückenhaft sein.

1
SCQGP in quark stars
Ramadas, Sineeba / Bannur, Vishnu M. | 2012
1
One-loop chiral amplitudes of Møller scattering process
Ahmadov, A. I. / Bystritskiy, Yu. M. / Ilyichev, A. N. / Kuraev, E. A. / Zykunov, V. A. | 2012
1
Forward jets and energy flow in hadronic collisions
Deak, M. / Hautmann, F. / Jung, H. / Kutak, K. | 2012
1
Periodicity and area spectrum of black holes
Zeng, Xiao-Xiong / Liu, Xian-Ming / Liu, Wen-Biao | 2012
1
TauSpinner program for studies on spin effect in tau production at the LHC
Czyczula, Z. / Przedzinski, T. / Was, Z. | 2012
1
Random coincidence of 2ν2β decay events as a background source in bolometric 0ν2β decay experiments
Chernyak, D. M. / Danevich, F. A. / Giuliani, A. / Olivieri, E. / Tenconi, M. / Tretyak, V. I. | 2012
1
Searches for new physics: Les Houches recommendations for the presentation of LHC results
Kraml, S. / Allanach, B. C. / Mangano, M. / Prosper, H. B. / Sekmen, S. / Balazs, C. / Barr, A. / Bechtle, P. / Belanger, G. / Belyaev, A. et al. | 2012
1
Particle acceleration in Horava–Lifshitz black holes
Sadeghi, J. / Pourhassan, B. | 2012
1
Hawking radiation temperatures in non-stationary Kerr black holes with different tortoise coordinate transformations
Lan, X. G. / Jiang, Q. Q. / Wei, L. F. | 2012
1
Dual-BRST symmetry: 6D Abelian 3-form gauge theory
Kumar, R. / Krishna, S. / Shukla, A. / Malik, R. P. | 2012
1
Measurement of charged particle multiplicities in pp collisions at $\sqrt{s} =7~\mbox{TeV}$ in the forward region
Aaij, R. / Abellan Beteta, C. / Adeva, B. / Adinolfi, M. / Adrover, C. / Affolder, A. / Ajaltouni, Z. / Albrecht, J. / Alessio, F. / Alexander, M. et al. | 2012
1
Search for decays of stopped, long-lived particles from 7 TeV pp collisions with the ATLAS detector
Aad, G. / Abbott, B. / Abdallah, J. / Abdelalim, A. A. / Abdesselam, A. / Abdinov, O. / Abi, B. / Abolins, M. / Abramowicz, H. / Abreu, H. et al. | 2012
1
Search for anomaly-mediated supersymmetry breaking with the ATLAS detector based on a disappearing-track signature in pp collisions at $\sqrt{s} = 7~\mathrm{TeV}$
Aad, G. / Abbott, B. / Abdallah, J. / Abdelalim, A. A. / Abdesselam, A. / Abdinov, O. / Abi, B. / Abolins, M. / Abramowicz, H. / Abreu, H. et al. | 2012
1
Magnetic anomaly in UCN trapping: signal for neutron oscillations to parallel world?
Berezhiani, Zurab / Nesti, Fabrizio | 2012
1
Proton opacity in the light of LHC diffractive data
Ryskin, M. G. / Martin, A. D. / Khoze, V. A. | 2012
1
The ATLAS data quality defect database system
Golling, T. / Hayward, H. S. / Onyisi, P. U. E. / Stelzer, H. J. / Waller, P. | 2012
1
Oblique parameters and extra generations via OPUCEM
Aşılar, Ece / Çavlan, Esin / Doğangün, Oktay / Kefeli, Sinan / Erkcan Özcan, V. / Şahin, Mehmet / Ünel, Gökhan | 2012
1
Bianchi type I cosmology in generalized Saez–Ballester theory via Noether gauge symmetry
Jamil, Mubasher / Ali, Sajid / Momeni, D. / Myrzakulov, R. | 2012
1
Measuring the masses of a pair of semi-invisibly decaying particles in central exclusive production with forward proton tagging
Harland-Lang, L. A. / Kom, C. H. / Sakurai, K. / Stirling, W. J. | 2012
1
Results from 730 kg days of the CRESST-II Dark Matter search
Angloher, G. / Bauer, M. / Bavykina, I. / Bento, A. / Bucci, C. / Ciemniak, C. / Deuter, G. / Feilitzsch, F. / Hauff, D. / Huff, P. et al. | 2012
1
Measurement of dijet production in diffractive deep-inelastic scattering with a leading proton at HERA
Aaron, F. D. / Alexa, C. / Andreev, V. / Backovic, S. / Baghdasaryan, A. / Baghdasaryan, S. / Barrelet, E. / Bartel, W. / Begzsuren, K. / Belousov, A. et al. | 2012
1
Measurement of charged particle multiplicities in pp collisions at Formula Not Shown in the forward region
Aaij, R. / Abellan Beteta, C. / Adeva, B. / Adinolfi, M. / Adrover, C. / Affolder, A. / Ajaltouni, Z. / Albrecht, J. / Alessio, F. / Alexander, M. | 2012
1
Two-loop representations of low-energy pion form factors and ππ scattering phases in the presence of isospin breaking
Descotes-Genon, Sébastien / Knecht, Marc | 2012
1
Large-scale magnetic fields from inflation due to a CPT-even Chern–Simons-like term with Kalb–Ramond and scalar fields
Bamba, Kazuharu / Geng, C. Q. / Ho, S. H. / Kao, W. F. | 2012
1
Spectroscopy of a Reissner–Nordström black hole via an action variable
Zeng, Xiao-Xiong / Liu, Wen-Biao | 2012
1
Methods to determine neutrino flux at low energies
Bodek, A. / Sarica, U. / Naples, D. / Ren, L. | 2012
1
Reconstruction of some cosmological models in f(R,T) cosmology
Jamil, Mubasher / Momeni, D. / Raza, Muhammad / Myrzakulov, Ratbay | 2012
1
Novel insights into the γγ ∗→π 0 transition form factor
Guo, Ze-kun / Zhao, Qiang | 2012
1
Spontaneous magnetization of the vacuum and the strength of the magnetic field in the hot Universe
Elizalde, E. / Skalozub, V. | 2012
1
String-inspired Chern–Simons modified gravity in four dimensions
Adak, M. / Dereli, T. | 2012
1
pQCD physics of multiparton interactions
Blok, B. / Dokshitzer, Yu. / Frankfurt, L. / Strikman, M. | 2012
1
The open-charm radiative and pionic decays of molecular charmonium Y(4274)
He, Jun / Liu, Xiang | 2012
1
Sensitivity of LHC experiments to exotic highly ionising particles
Roeck, A. / Katre, A. / Mermod, P. / Milstead, D. / Sloan, T. | 2012
1
χ QJ →ℓ + ℓ − within and beyond the Standard Model
Yang, Deshan / Zhao, Shuai | 2012
1
Bottomonium spectrum with coupled-channel effects
Liu, Jia-Feng / Ding, Gui-Jun | 2012
1
Search for anomaly-mediated supersymmetry breaking with the ATLAS detector based on a disappearing-track signature in pp collisions at Formula Not Shown
Aad, G. / Abbott, B. / Abdallah, J. / Abdelalim, A. A. / Abdesselam, A. / Abdinov, O. / Abi, B. / Abolins, M. / Abramowicz, H. / Abreu, H. | 2012