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NEMO-3 Collaboration (Arnold R. et al); Martin-Albo, J.; Novella, P. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Measurement of the beta beta Decay Half-Life of (130)Te with the NEMO-3 Detector |
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Journal Article |
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Year |
2011 |
Publication |
Physical Review Letters |
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107 |
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6 |
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062504 |
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We report results from the NEMO-3 experiment based on an exposure of 1275 days with 661 g of (130)Te in the form of enriched and natural tellurium foils. The beta beta decay rate of (130)Te is found to be greater than zero with a significance of 7.7 standard deviations and the half-life is measured to be T(1/2)(2v)=[7.0 +/- 0.9(stat) +/- 1: 1(syst)] x 10(20) yr. This represents the most precise measurement of this half- life yet published and the first real-time observation of this decay. |
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0031-9007 |
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WOS:000293562700003 |
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no |
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yes |
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yes |
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IFIC @ elepoucu @ |
Serial |
715 |
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Author |
Tamii, A. et al; Rubio, B. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Complete Electric Dipole Response and the Neutron Skin in (208)Pb |
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Journal Article |
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Year |
2011 |
Publication |
Physical Review Letters |
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Volume |
107 |
Issue |
6 |
Pages |
062502 |
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A benchmark experiment on (208)Pb shows that polarized proton inelastic scattering at very forward angles including 0 degrees is a powerful tool for high-resolution studies of electric dipole (E1) and spin magnetic dipole (M1) modes in nuclei over a broad excitation energy range to test up-to-date nuclear models. The extracted E1 polarizability leads to a neutron skin thickness r(skin) = 0.156(-0.021)(+0.025) fm in (208)Pb derived within a mean-field model [Phys. Rev. C 81, 051303 (2010)], thereby constraining the symmetry energy and its density dependence relevant to the description of neutron stars. |
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0031-9007 |
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WOS:000293447900005 |
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no |
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yes |
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yes |
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IFIC @ elepoucu @ |
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716 |
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Pierre Auger Collaboration (Abreu, P. et al); Pastor, S. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Search for ultrahigh energy neutrinos in highly inclined events at the Pierre Auger Observatory |
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Journal Article |
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Year |
2011 |
Publication |
Physical Review D |
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84 |
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12 |
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122005 |
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The Surface Detector of the Pierre Auger Observatory is sensitive to neutrinos of all flavors above 0.1 EeV. These interact through charged and neutral currents in the atmosphere giving rise to extensive air showers. When interacting deeply in the atmosphere at nearly horizontal incidence, neutrinos can be distinguished from regular hadronic cosmic rays by the broad time structure of their shower signals in the water-Cherenkov detectors. In this paper we present for the first time an analysis based on down-going neutrinos. We describe the search procedure, the possible sources of background, the method to compute the exposure and the associated systematic uncertainties. No candidate neutrinos have been found in data collected from 1 January 2004 to 31 May 2010. Assuming an E(-2) differential energy spectrum the limit on the single-flavor neutrino is E(2)dN/dE < 1.74 x 10(-7)GeVcm(-2)s(-1)sr(-1) at 90% C.L. in the energy range 1 x 10(17) eV < E < 1 x 10(20)eV. |
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1550-7998 |
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WOS:000298667100001 |
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no |
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yes |
International Collaboration |
yes |
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Call Number |
IFIC @ elepoucu @ |
Serial |
863 |
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Author |
Filipuzzi, A. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Universality Violation In Leptonic W Decays: An Effective Field Theory Approach |
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Journal Article |
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Year |
2011 |
Publication |
Acta Physica Polonica B |
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42 |
Issue |
11 |
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2453-2459 |
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We analyse the deviation from universality in leptonic W decays suggested by current PDG data within a general effective field theory approach. Considering the constraints to the New Physics effects coming from Electroweak precision observables we are able to set limits on the amount of universality violation that can be accounted for in a broad class of New Physics models. Our approach starts from a usual Single Operator analysis and extends up to considering the interplay of all the effective operators defined by our EFT. |
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0587-4254 |
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WOS:000298076600033 |
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no |
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Is ISI |
yes |
International Collaboration |
no |
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Call Number |
IFIC @ elepoucu @ |
Serial |
864 |
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Permanent link to this record |