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Radio emission of extensive air shower at CODALEMA: Polarization of the radio emission along the v*B vector

Sep 22, 2013 09/13

by Colas Riviere; for the CODALEMA Collaboration; :; D. Ardouin; A. Belletoile; C. Berat; D. Breton; D. Charrier; J. Chauvin; M. Chendeb; A. Cordier; S. Dagoret-Campagne; R. Dallier; L. Denis; C. Dumez-Viou; C. Fabrice; T. Garcon; X. Garrido; N. Gautherot; T. Gousset; F. Haddad; D. H. Koang; J. Lamblin; P. Lautridou; D. Lebrun; A. Lecacheux; F. Lefeuvre; L. Martin; E. Meyer; F. Meyer; N. Meyer-Vernet; D. Monnier-Ragaigne; F. Montanet; K. Payet; G. Plantier; O. Ravel; B. Revenu; C. Riviere; T....

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Cosmic rays extensive air showers (EAS) are associated with transient radio emission, which could provide an efficient new detection method of high energy cosmic rays, combining a calorimetric measurement with a high duty cycle. The CODALEMA experiment, installed at the Radio Observatory in Nancay, France, is investigating this phenomenon in the 10^17 eV region. One challenging point is the understanding of the radio emission mechanism. A first observation indicating a linear relation between...
Source: http://arxiv.org/abs/0906.2720v2

Arxiv.org

55 55

Measurement of the Double Beta Decay Half-life of 130Te with the NEMO-3 Detector

Sep 21, 2013 09/13

by R. Arnold; C. Augier; J. Baker; A. S. Barabash; A. Basharina-Freshville; S. Blondel; M. Bongrand; G. Broudin-Bay; V. Brudanin; A. J. Caffrey; A. Chapon; E. Chauveau; D. Durand; V. Egorov; R. Flack; X. Garrido; J. Grozier; B. Guillon; Ph. Hubert; C. M. Jackson; S. Jullian; M. Kauer; A. Klimenko; O. Kochetov; S. I. Konovalov; V. Kovalenko; D. Lalanne; T. Lamhamdi; K. Lang; Z. Liptak; G. Lutter; F. Mamedov; Ch. Marquet; J. Martin-Albo; F. Mauger; J. Mott; A. Nachab; I. Nemchenok; C. H. Nguyen; F....

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This Letter reports results from the NEMO-3 experiment based on an exposure of 1275 days with 661g of 130Te in the form of enriched and natural tellurium foils. The double beta decay rate of 130Te is found to be greater than zero with a significance of 7.7 standard deviations and the half-life is measured to be T1/2 = (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.
Source: http://arxiv.org/abs/1104.3716v3

Arxiv.org

93 93

Probing New Physics Models of Neutrinoless Double Beta Decay with SuperNEMO

Jul 19, 2013 07/13

by R. Arnold; C. Augier; J. Baker; A. S. Barabash; A. Basharina-Freshville; M. Bongrand; V. Brudanin; A. J. Caffrey; S. Cebrián; A. Chapon; E. Chauveau; Th. Dafni; F. F. Deppisch; J. Diaz; D. Durand; V. Egorov; J. J. Evans; R. Flack; K-I. Fushima; I. García Irastorza; X. Garrido; H. Gómez; B. Guillon; A. Holin; K. Holy; J. J. Horkley; Ph. Hubert; C. Hugon; F. J. Iguaz; N. Ishihara; C. M. Jackson; S. Jullian; M. Kauer; O. Kochetov; S. I. Konovalov; V. Kovalenko; T. Lamhamdi; K. Lang; G. Lutter;...

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The possibility to probe new physics scenarios of light Majorana neutrino exchange and right-handed currents at the planned next generation neutrinoless double beta decay experiment SuperNEMO is discussed. Its ability to study different isotopes and track the outgoing electrons provides the means to discriminate different underlying mechanisms for the neutrinoless double beta decay by measuring the decay half-life and the electron angular and energy distributions.
Source: http://arxiv.org/abs/1005.1241v2

Arxiv.org

11 11

$Result of the search for neutrinoless double-$\beta$ decay in $^{100}$Mo with the NEMO-3 experiment$

Result of the search for neutrinoless double-$\beta$ decay in $^{100}$Mo with the NEMO-3 experiment

Jun 28, 2018 06/18

by R. Arnold; C. Augier; J. D. Baker; A. S. Barabash; A. Basharina-Freshville; S. Blondel; S. Blot; M. Bongrand; V. Brudanin; J. Busto; A. J. Caffrey; S. Calvez; C. Cerna; J. P. Cesar; A. Chapon; E. Chauveau; D. Duchesneau; D. Durand; V. Egorov; G. Eurin; J. J. Evans; L. Fajt; D. Filosofov; R. Flack; X. Garrido; H. Gómez; B. Guillon; P. Guzowski; R. Hodák; A. Huber; P. Hubert; C. Hugon; S. Jullian; A. Klimenko; O. Kochetov; S. I. Konovalov; V. Kovalenko; D. Lalanne; K. Lang; Y. Lemière; T. Le...

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The NEMO-3 detector, which had been operating in the Modane Underground Laboratory from 2003 to 2010, was designed to search for neutrinoless double $\beta$ ($0\nu\beta\beta$) decay. We report final results of a search for $0\nu\beta\beta$ decays with $6.914$ kg of $^{100}$Mo using the entire NEMO-3 data set with a detector live time of $4.96$ yr, which corresponds to an exposure of 34.3 kg$\cdot$yr. We perform a detailed study of the expected background in the $0\nu\beta\beta$ signal region...
Topics: Instrumentation and Detectors, Physics, Nuclear Experiment, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1506.05825

Arxiv.org

4 4.0

$Measurement of the 2$\nu\beta\beta$ decay half-life of $^{150}$Nd and a search for 0$\nu\beta\beta$ decay processes with the full exposure from the NEMO-3 detector$

Measurement of the 2$\nu\beta\beta$ decay half-life of $^{150}$Nd and a search for 0$\nu\beta\beta$ decay processes with the full exposure from the NEMO-3 detector

Jun 29, 2018 06/18

by NEMO-3 Collaboration; :; R. Arnold; C. Augier; J. D. Baker; A. S. Barabash; A. Basharina-Freshville; S. Blondel; S. Blot; M. Bongrand; V. Brudanin; J. Busto; A. J. Caffrey; S. Calvez; M. Cascell; C. Cerna; J. P. Cesar; A. Chapon; E. Chauveau; A. Chopra; D. Duchesneau; D. Durand; V. Egorov; G. Eurin; J. J. Evans; L. Fajt; D. Filosofov; R. Flack; X. Garrido; H. Gòmez; B. Guillon; P. Guzowski; R. Hodák; A. Huber; P. Hubert; C. Hugon; S. Jullian; A. Klimenko; O. Kochetov; S. I. Konovalov; V....

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We present results from a search for neutrinoless double-$\beta$ ($0\nu\beta\beta$) decay using 36.6 g of the isotope $^{150}$Nd with data corresponding to a live time of 5.25 y recorded with the NEMO-3 detector. We construct a complete background model for this isotope, including a measurement of the two-neutrino double-$\beta$ decay half-life of $T^{2\nu}_{1/2}=$[9.34 $\pm$ 0.22 (stat.) $^{+0.62}_{-0.60}$ (syst.)]$\times 10^{18}$ y for the ground state transition, which represents the most...
Topics: Instrumentation and Detectors, Nuclear Experiment, Physics, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1606.08494

Arxiv.org

10 10.0

$Measurement of the $2\nu\beta\beta$ Decay Half-Life and Search for the $0\nu\beta\beta$ Decay of $^{116}$Cd with the NEMO-3 Detector$

Measurement of the $2\nu\beta\beta$ Decay Half-Life and Search for the $0\nu\beta\beta$ Decay of $^{116}$Cd with the NEMO-3 Detector

Jun 29, 2018 06/18

by NEMO-3 Collaboration; :; R. Arnold; C. Augier; J. D. Baker; A. S. Barabash; A. Basharina-Freshville; S. Blondel; S. Blot; M. Bongrand; D. Boursette; V. Brudanin; J. Busto; A. J. Caffrey; S. Calvez; M. Cascella; C. Cerna; J. P. Cesar; A. Chapon; E. Chauveau; A. Chopra; D. Duchesneau; D. Durand; V. Egorov; G. Eurin; J. J. Evans; L. Fajt; D. Filosofov; R. Flack; X. Garrido; H. Gómez; B. Guillon; P. Guzowski; R. Hodák; A. Huber; P. Hubert; C. Hugon; S. Jullian; A. Klimenko; O. Kochetov; S. I....

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The NEMO-3 experiment measured the half-life of the $2\nu\beta\beta$ decay and searched for the $0\nu\beta\beta$ decay of $^{116}$Cd. Using $410$ g of $^{116}$Cd installed in the detector with an exposure of $5.26$ y, ($4968\pm74$) events corresponding to the $2\nu\beta\beta$ decay of $^{116}$Cd to the ground state of $^{116}$Sn have been observed with a signal to background ratio of about $12$. The half-life of the $2\nu\beta\beta$ decay has been measured to be $...
Topics: Instrumentation and Detectors, Physics, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1610.03226

Arxiv.org

46 46

Spectral modeling of scintillator for the NEMO-3 and SuperNEMO detectors

Sep 22, 2013 09/13

by J. Argyriades; R. Arnold; C. Augier; J. Baker; A. S. Barabash; M. Bongrand; G. Broudin-Bay; V. B. Brudanin; A. J. Caffrey; S. Cebrián; A. Chapon; E. Chauveau; Th. Dafni; Z. Daraktchieva; J. D iaz; D. Durand; V. G. Egorov; J. J. Evans; N. Fatemi-Ghomi; R. Flack; A. Basharina-Freshville; K-I. Fushimi; X. Garrido; H. Gómez; B. Guillon; A. Holin; K. Holy; J. J. Horkey; Ph. Hubert; C. Hugon; F. J. Iguaz; I. G. Irastorza; N. Ishihara; C. M. Jackson; S. Jullian; S. Kanamaru; M. Kauer; O. I....

eye 46

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We have constructed a GEANT4-based detailed software model of photon transport in plastic scintillator blocks and have used it to study the NEMO-3 and SuperNEMO calorimeters employed in experiments designed to search for neutrinoless double beta decay. We compare our simulations to measurements using conversion electrons from a calibration source of $\rm ^{207}Bi$ and show that the agreement is improved if wavelength-dependent properties of the calorimeter are taken into account. In this...
Source: http://arxiv.org/abs/1004.3779v2

Arxiv.org

10 10.0

$Measurement of the double-beta decay half-life and search for the neutrinoless double-beta decay of $^{48}{\rm Ca}$ with the NEMO-3 detector$

Measurement of the double-beta decay half-life and search for the neutrinoless double-beta decay of $^{48}{\rm Ca}$ with the NEMO-3 detector

Jun 29, 2018 06/18

by NEMO-3 Collaboration; :; R. Arnold; C. Augier; A. M. Bakalyarov; J. D. Baker; A. S. Barabash; A. Basharina-Freshville; S. Blondel; S. Blot; M. Bongrand; V. Brudanin; J. Busto; A. J. Caffrey; S. Calvez; M. Cascella; C. Cerna; J. P. Cesar; A. Chapon; E. Chauveau; A. Chopra; D. Duchesneau; D. Durand; V. Egorov; G. Eurin; J. J. Evans; L. Fajt; D. Filosofov; R. Flack; X. Garrido; H. Gómez; B. Guillon; P. Guzowski; R. Hodák; A. Huber; P. Hubert; C. Hugon; S. Jullian; A. Klimenko; O. Kochetov; S. I....

eye 10

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The NEMO-3 experiment at the Modane Underground Laboratory has investigated the double-$\beta$ decay of $^{48}{\rm Ca}$. Using $5.25$ yr of data recorded with a $6.99\,{\rm g}$ sample of $^{48}{\rm Ca}$, approximately $150$ double-$\beta$ decay candidate events have been selected with a signal-to-background ratio greater than $3$. The half-life for the two-neutrino double-$\beta$ decay of $^{48}{\rm Ca}$ has been measured to be $T^{2\nu}_{1/2}\,=\,[6.4\, ^{+0.7}_{-0.6}{\rm (stat.)} \,...
Topics: Instrumentation and Detectors, Nuclear Experiment, Physics, High Energy Physics - Experiment
Source: http://arxiv.org/abs/1604.01710

Arxiv.org

73 73

Measurements of Cross Sections and Charged Pion Spectra in Proton-Carbon Interactions at 31 GeV/c

Sep 18, 2013 09/13

by N. Abgrall; A. Aduszkiewicz; B. Andrieu; T. Anticic; N. Antoniou; J. Argyriades; A. G. Asryan; B. Baatar; A. Blondel; J. Blumer; M. Bogusz; L. Boldizsar; A. Bravar; W. Brooks; J. Brzychczyk; A. Bubak; S. A. Bunyatov; O. Busygina; T. Cetner; K. -U. Choi; P. Christakoglou; P. Chung; T. Czopowicz; N. Davis; F. Diakonos; S. Di Luise; W. Dominik; J. Dumarchez; R. Engel; A. Ereditato; L. S. Esposito; G. A. Feofilov; Z. Fodor; A. Ferrero; A. Fulop; X. Garrido; M. Gazdzicki; M. Golubeva; K....

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Interaction cross sections and charged pion spectra in p+C interactions at 31 GeV/c were measured with the large acceptance NA61/SHINE spectrometer at the CERN SPS. These data are required to improve predictions of the neutrino flux for the T2K long baseline neutrino oscillation experiment in Japan. A set of data collected during the first NA61/SHINE run in 2007 with an isotropic graphite target with a thickness of 4% of a nuclear interaction length was used for the analysis. The measured p+C...
Source: http://arxiv.org/abs/1102.0983v3

Arxiv.org

65 65

Measurement of Production Properties of Positively Charged Kaons in Proton-Carbon Interactions at 31 GeV/c

Sep 24, 2013 09/13

by The NA61/SHINE Collaboration; :; N. Abgrall; A. Aduszkiewicz; T. Anticic; N. Antoniou; J. Argyriades; B. Baatar; A. Blondel; J. Blumer; M. Bogusz; L. Boldizsar; A. Bravar; W. Brooks; J. Brzychczyk; A. Bubak; S. A. Bunyatov; O. Busygina; T. Cetner; K. -U. Choi; P. Christakoglou; P. Chung; T. Czopowicz; N. Davis; F. Diakonos; S. Di Luise; W. Dominik; J. Dumarchez; R. Engel; A. Ereditato; L. S. Esposito; G. A. Feofilov; Z. Fodor; A. Ferrero; A. Fulop; X. Garrido; M. Gazdzicki; M. Golubeva; K....

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Spectra of positively charged kaons in p+C interactions at 31 GeV/c were measured with the NA61/SHINE spectrometer at the CERN SPS. The analysis is based on the full set of data collected in 2007 with a graphite target with a thickness of 4% of a nuclear interaction length. Interaction cross sections and charged pion spectra were already measured using the same set of data. These new measurements in combination with the published ones are required to improve predictions of the neutrino flux for...
Source: http://arxiv.org/abs/1112.0150v1

Arxiv.org

121 121

Trigger and Aperture of the Surface Detector Array of the Pierre Auger Observatory

Sep 23, 2013 09/13

by J. Abraham; P. Abreu; M. Aglietta; C. Aguirre; E. J. Ahn; D. Allard; I. Allekotte; J. Allen; J. Alvarez-Muñiz; M. Ambrosio; L. Anchordoqui; S. Andringa; A. Anzalone; C. Aramo; E. Arganda; S. Argirò; K. Arisaka; F. Arneodo; F. Arqueros; T. Asch; H. Asorey; P. Assis; J. Aublin; M. Ave; G. Avila; T. Bäcker; D. Badagnani; K. B. Barber; A. F. Barbosa; S. L. C. Barroso; B. Baughman; P. Bauleo; J. J. Beatty; T. Beau; B. R. Becker; K. H. Becker; A. Bellétoile; J. A. Bellido; S. BenZvi; C. Berat; P....

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The surface detector array of the Pierre Auger Observatory consists of 1600 water-Cherenkov detectors, for the study of extensive air showers (EAS) generated by ultra-high-energy cosmic rays. We describe the trigger hierarchy, from the identification of candidate showers at the level of a single detector, amongst a large background (mainly random single cosmic ray muons), up to the selection of real events and the rejection of random coincidences. Such trigger makes the surface detector array...
Source: http://arxiv.org/abs/1111.6764v1

Arxiv.org

86 86

$Upper limit on the cosmic-ray photon fraction at EeV energies from the Pierre Auger Observatory$

Upper limit on the cosmic-ray photon fraction at EeV energies from the Pierre Auger Observatory

Sep 23, 2013 09/13

by The Pierre Auger Collaboration; J. Abraham; P. Abreu; M. Aglietta; C. Aguirre; E. J. Ahn; D. Allard; I. Allekotte; J. Allen; P. Allison; J. Alvarez-Muñiz; M. Ambrosio; L. Anchordoqui; S. Andringa; A. Anzalone; C. Aramo; S. Argiró; K. Arisaka; F. Arneodo; F. Arqueros; T. Asch; H. Asorey; P. Assis; J. Aublin; M. Ave; G. Avila; T. Bäcker; D. Badagnani; K. B. Barber; A. F. Barbosa; S. L. C. Barroso; B. Baughman; P. Bauleo; J. J. Beatty; T. Beau; B. R. Becker; K. H. Becker; A. Bellétoile; J. A....

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From direct observations of the longitudinal development of ultra-high energy air showers performed with the Pierre Auger Observatory, upper limits of 3.8%, 2.4%, 3.5% and 11.7% (at 95% c.l.) are obtained on the fraction of cosmic-ray photons above 2, 3, 5 and 10 EeV (1 EeV = 10^18 eV) respectively. These are the first experimental limits on ultra-high energy photons at energies below 10 EeV. The results complement previous constraints on top-down models from array data and they reduce...
Source: http://arxiv.org/abs/0903.1127v2

Arxiv.org

88 88

Update on the correlation of the highest energy cosmic rays with nearby extragalactic matter

Sep 19, 2013 09/13

by The Pierre Auger Collaboration; P. Abreu; M. Aglietta; E. J. Ahn; D. Allard; I. Allekotte; J. Allen; J. Alvarez Castillo; J. Alvarez-Muñiz; M. Ambrosio; A. Aminaei; L. Anchordoqui; S. Andringa; T. Antičić; A. Anzalone; C. Aramo; E. Arganda; K. Arisaka; F. Arqueros; H. Asorey; P. Assis; J. Aublin; M. Ave; M. Avenier; G. Avila; T. Bäcker; D. Badagnani; M. Balzer; K. B. Barber; A. F. Barbosa; R. Bardenet; S. L. C. Barroso; B. Baughman; J. J. Beatty; B. R. Becker; K. H. Becker; A. Bellétoile;...

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Data collected by the Pierre Auger Observatory through 31 August 2007 showed evidence for anisotropy in the arrival directions of cosmic rays above the Greisen-Zatsepin-Kuz'min energy threshold, \nobreak{$6\times 10^{19}$eV}. The anisotropy was measured by the fraction of arrival directions that are less than $3.1^\circ$ from the position of an active galactic nucleus within 75 Mpc (using the V\'eron-Cetty and V\'eron $12^{\rm th}$ catalog). An updated measurement of this fraction is reported...
Source: http://arxiv.org/abs/1009.1855v2

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