Final model independent result of DAMA/LIBRA–phase1

Bernabei, R.; Belli, P.; Cappella, F.; Caracciolo, V.; Castellano, Simone; Cerulli, R.; Dai, C.J.; d’Angelo, A.; d’Angelo, S.; Marco, Alessandro Di; He, Huilin; Incicchitti, A.; Kuang, H. H.; Ma, Xiaohua; Montecchia, F.; Prosperi, D.; Sheng, X. D.; Wang, R.G.; Ye, Z.P.

doi:10.1140/epjc/s10052-013-2648-7

Cited by 515 publications

(624 citation statements)

References 57 publications

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“…The DAMA/NaI [110][111][112] and DAMA/Libra [113][114][115] experiments have observed an annual modulation at 9.3 σ C.L. [116,117], as expected for a signal from dark particles. Different anomalies in other direct detection experiments, CoGeNT [118], CRESST-II [119] and recently CDMS-II (CDMS-Si) [120], may be reconciled with DAMA results.…”

Section: Wimps and Dark Mattermentioning

confidence: 88%

Neutron Majorana mass from exotic instantons

Addazi

Bianchi

2014

J. High Energ. Phys.

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We show how a Majorana mass for the neutron could result from nonperturbative quantum gravity effects peculiar to string theory. In particular, "exotic instantons" in un-oriented string compactifications with D-branes extending the (supersymmetric) standard model could indirectly produce an effective operator δm n t n + h.c.. In a specific model with an extra vector-like pair of 'quarks', acquiring a large mass proportional to the string mass scale (exponentially suppressed by a function of the string moduli fields), δm can turn out to be as low as 10 −24 -10 −25 eV.The induced neutron-antineutron oscillations could take place with a time scale τ nn > 10 8 s that could be tested by the next generation of experiments. On the other hand, proton decay and FCNC's are automatically strongly suppressed and are compatible with the current experimental limits.Depending on the number of brane intersections, the model may also lead to the generation of Majorana masses for R-handed neutrini. Our proposal could also suggest neutron-neutralino or neutron-axino oscillations, with implications in UCN, Dark Matter Direct Detection, UHECR and Neutron-Antineutron oscillations.This suggests to improve the limits on neutron-antineutron oscillations, as a possible test of string theory and quantum gravity.

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Section: Wimps and Dark Mattermentioning

confidence: 88%

Neutron Majorana mass from exotic instantons

Addazi

Bianchi

2014

J. High Energ. Phys.

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“…Nonphysical events such as electronic noise and tower vibrations, as well as particle interactions in the thermistors, follow an oblique distribution. The green solid line corresponds to the 90th percentile of the OT χ 2 distribution (OT χ 2 90% ) calculated in the region [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50] keV and OT χ 2 < 10 using physics data. The magenta (orange) dashed line corresponds to the 90th (50th) percentile calculated using calibration data in the region [100-500] keV and OT χ 2 < 10, assuming linear dependence on energy.…”

Section: Dataset-bolometer Selection Criteriamentioning

confidence: 99%

“…For comparison, we also show the 5σ , 3σ and 90% C.L. regions resulting from a ML analysis reported in [31] on the DAMA/LIBRA annual modulation positive result [37,38] using the same parameters for the SHM. Thanks to the 741 kg of target mass of CUORE, we expect to achieve the sensitivity required to fully explore the parameter region implied by the DAMA/LIBRA posi-tive annual modulation signal with 5 years of data-taking.…”

Section: Wimp Sensitivity Of Cuorementioning

confidence: 99%

Low energy analysis techniques for CUORE

et al. 2017

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CUORE is a tonne-scale cryogenic detector operating at the Laboratori Nazionali del Gran Sasso (LNGS) that uses tellurium dioxide bolometers to search for neutrinoless double-beta decay of 130 Te. CUORE is also suitable to search for low energy rare events such as solar axions or WIMP scattering, thanks to its ultra-low background and large target mass. However, to conduct such sensitive searches requires improving the energy threshold to 10 keV. In this paper, we describe the analysis techniques developed for the low energy analysis of CUORE-like detectors, using the data acquired from November 2013 to March 2015 by CUORE-0, a singletower prototype designed to validate the assembly procedure and new cleaning techniques of CUORE. We explain the energy threshold optimization, continuous monitoring of the trigger efficiency, data and event selection, and energy calibration at low energies in detail. We also present the low energy background spectrum of CUORE-0 below 60 keV. Finally, we report the sensitivity of CUORE to WIMP annual modulation using the CUORE-0 energy threshold and background, as well as an estimate of the uncertainty on the nuclear quenching factor from nuclear recoils inCUORE-0.

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“…Some experiments report possible observations of dark matter scattering [27,28,29] while others exclude the mass and cross section regions where such signals would occur. In general, increasing sensitivity of direct searches tend to exclude weakly interacting dark matter with mass comparable to those of heavy nuclei most strongly, unless the reported scattering events are indeed due to the dark matter.…”

Section: General Statusmentioning

confidence: 99%

Search for Supersymmetry in pp Collisions at √s = 8 TeV with a Photon, Lepton, and Missing Transverse Energy

Iiyama¹

2017

Springer Theses

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This thesis presents a search for anomalous production of events with at least one photon, one electron or muon, and large missing transverse energy in proton-proton collisions at a center-of-mass energy of 8 TeV. A data set corresponding to an integrated luminosity of 19.7 fb −1 recorded in 2012 by the Compact Muon Solenoid detector at the CERN Large Hadron Collider is analyzed. The search is motivated by a class of supersymmetric extensions of the standard model with gauge-mediated supersymmetry breaking, which predicts decays of supersymmetric particles into a W boson, a photon, and highly energetic gravitinos, which are undetected and lead to a momentum imbalance in the plane transverse to the proton beams. The expected standard model background contributions of events featuring the same final state signature is estimated by separating the background processes into categories and applying estimation techniques tailored for each category. No excess of events with large missing transverse energy is observed beyond the expectations from standard model processes. The result of this search is interpreted as 95% confidence level upper limits on the production cross section of supersymmetric particles as well as generic new-physics particles in two simplified models. The cross section upper limits set by this search pose the most stringent constraint to date on the considered supersymmetric models.

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Final model independent result of DAMA/LIBRA–phase1

Cited by 515 publications

References 57 publications

Neutron Majorana mass from exotic instantons

Neutron Majorana mass from exotic instantons

Low energy analysis techniques for CUORE

Search for Supersymmetry in pp Collisions at √s = 8 TeV with a Photon, Lepton, and Missing Transverse Energy

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