592 research outputs found
Proposal for an Electron Antineutrino Disappearance Search Using High-Rate 8Li Production and Decay
No full textThis paper introduces a novel, high-intensity source of electron antineutrinos from the production and subsequent decay of 8Li. When paired with an existing ~1 kton scintillator-based detector, this =6.4 MeV source opens a wide range of possible searches for beyond standard model physics via studies of the inverse beta decay interaction. In particular, the experimental design described here has unprecedented sensitivity to electron antineutrino disappearance at 1 eV and features the ability to distinguish between the existence of zero, one, and two sterile neutrinos
Limits on electron neutrino disappearance from the KARMEN and LSND νe-carbon cross section data
No full textThis paper presents a combined analysis of the KARMEN and LSND ν[subscript e]-carbon cross section measurements within the context of a search for ν[subscript e] disappearance at high Δm[superscript 2]. KARMEN and LSND were located at 17.7 m and 29.8 m, respectively, from the neutrino source, so, the consistency of the two measurements, as a function of antineutrino energy, sets strong limits on neutrino oscillations. Most of the allowed region from the ν[subscript e] disappearance analysis of the Gallium calibration data is excluded at >95% CL and the best-fit point is excluded at 3.6σ. Assuming CPT conservation, comparisons are also made to the oscillation analyses of reactor antineutrino data.National Science Foundation (U.S.
Class of 1954 - October
No full textAigen, M. Auerbach, P. I. Auerbach, T. J. Badillo, H. Baumrind, A. Beitel, B. Bloomberg, A. L. Brecker, M. Brod, L. D. Camoia, D. N. Clark, R. S. Cusumano, G. M. Davidian, M. W. Davis, S. Denmark, B. Distefano, J. A. Dranoff, S. S. Eisenberg, W. L. Elias, F. V. Engelhardt, S. L. Esposito, J. A. Fieldman, S. G. Gelles, G. Gotteherer, D. Greenfield, G. T. Held, G. S. Herman, H. C. Kaner, M. E. Kantrowitz, W. L. Katz, M. J. Katz, S. M. Kernaghan, A. Kjellen, H. L. Korf, L. R. Ladinsky, S. Levine, W. S. Levy, A. S. Lieberman, S. Mandelbaum, S. Marcus, R. B. Marks, W. J., Jr. Mayer, M. E. Molofsky, E. Moser, S. A. Newcomb, G. C. Nichols, L. J. Panebianco, T. A. Posner, H. A. Priolo, J. S. Regan, E. J. Rennert, A. E. Rivet, P. H. Satriale, J. T. Sawyer, C. A. Scheffel, W. A. Schwartz, R. R. Scourby, N. Shaevitz, O. Sherman, P. Sherry, E. P. Silverman, D. B. Sitkoff, L. Soloway, H. J. Somer, A. Sorkowitz, H. Strassberg, L. Stumpf, M. N. Sullivan, D. J. Toell, P. R. Tomasello, C. Tracy, R. T. Turchin, N. G. Turkewitz, B. Valdes, F. A. Weiss, F. Wolfish, L.https://brooklynworks.brooklaw.edu/bls_classphotos/1058/thumbnail.jp
Class of 1954 - October
No full textAigen, M. Auerbach, P. I. Auerbach, T. J. Badillo, H. Baumrind, A. Beitel, B. Bloomberg, A. L. Brecker, M. Brod, L. D. Camoia, D. N. Clark, R. S. Cusumano, G. M. Davidian, M. W. Davis, S. Denmark, B. Distefano, J. A. Dranoff, S. S. Eisenberg, W. L. Elias, F. V. Engelhardt, S. L. Esposito, J. A. Fieldman, S. G. Gelles, G. Gotteherer, D. Greenfield, G. T. Held, G. S. Herman, H. C. Kaner, M. E. Kantrowitz, W. L. Katz, M. J. Katz, S. M. Kernaghan, A. Kjellen, H. L. Korf, L. R. Ladinsky, S. Levine, W. S. Levy, A. S. Lieberman, S. Mandelbaum, S. Marcus, R. B. Marks, W. J., Jr. Mayer, M. E. Molofsky, E. Moser, S. A. Newcomb, G. C. Nichols, L. J. Panebianco, T. A. Posner, H. A. Priolo, J. S. Regan, E. J. Rennert, A. E. Rivet, P. H. Satriale, J. T. Sawyer, C. A. Scheffel, W. A. Schwartz, R. R. Scourby, N. Shaevitz, O. Sherman, P. Sherry, E. P. Silverman, D. B. Sitkoff, L. Soloway, H. J. Somer, A. Sorkowitz, H. Strassberg, L. Stumpf, M. N. Sullivan, D. J. Toell, P. R. Tomasello, C. Tracy, R. T. Turchin, N. G. Turkewitz, B. Valdes, F. A. Weiss, F. Wolfish, L.https://brooklynworks.brooklaw.edu/bls_classphotos/1058/thumbnail.jp
Recommended from our members
Class of 1954 - October
No full textAigen, M. Auerbach, P. I. Auerbach, T. J. Badillo, H. Baumrind, A. Beitel, B. Bloomberg, A. L. Brecker, M. Brod, L. D. Camoia, D. N. Clark, R. S. Cusumano, G. M. Davidian, M. W. Davis, S. Denmark, B. Distefano, J. A. Dranoff, S. S. Eisenberg, W. L. Elias, F. V. Engelhardt, S. L. Esposito, J. A. Fieldman, S. G. Gelles, G. Gotteherer, D. Greenfield, G. T. Held, G. S. Herman, H. C. Kaner, M. E. Kantrowitz, W. L. Katz, M. J. Katz, S. M. Kernaghan, A. Kjellen, H. L. Korf, L. R. Ladinsky, S. Levine, W. S. Levy, A. S. Lieberman, S. Mandelbaum, S. Marcus, R. B. Marks, W. J., Jr. Mayer, M. E. Molofsky, E. Moser, S. A. Newcomb, G. C. Nichols, L. J. Panebianco, T. A. Posner, H. A. Priolo, J. S. Regan, E. J. Rennert, A. E. Rivet, P. H. Satriale, J. T. Sawyer, C. A. Scheffel, W. A. Schwartz, R. R. Scourby, N. Shaevitz, O. Sherman, P. Sherry, E. P. Silverman, D. B. Sitkoff, L. Soloway, H. J. Somer, A. Sorkowitz, H. Strassberg, L. Stumpf, M. N. Sullivan, D. J. Toell, P. R. Tomasello, C. Tracy, R. T. Turchin, N. G. Turkewitz, B. Valdes, F. A. Weiss, F. Wolfish, L.https://brooklynworks.brooklaw.edu/bls_classphotos/1058/thumbnail.jp
Extragalactic and cosmological tests of gravity theories with additional scalar or vector fields
No full textDespite the many successes of the current standard model of cosmology on the largest physical scales, it relies on two phenomenologically motivated constituents, cold dark matter and dark energy, which account for approximately 95% of the energy-matter content of the universe. From a more fundamental point of view, however, the introduction of a dark energy (DE) component is theoretically challenging and extremely fine-tuned, despite the many proposals for its dynamics. On the other hand, the concept of cold dark matter (CDM) also suffers from several issues such as the lack of direct experimental detection, the question of its cosmological abundance and problems related to the formation of structure on small scales. A perhaps more natural solution might be that the gravitational interaction genuinely differs from that of general relativity, which expresses itself as either one or even both of the above dark components. Here we consider different possibilities on how to constrain hypothetical modifications to the gravitational sector, focusing on the subset of tensor-vector-scalar (TeVeS) theory as an alternative to CDM on galactic scales and a particular class of chameleon models which aim at explaining the coincidences of DE. Developing an analytic model for nonspherical lenses, we begin our analysis with testing TeVeS against observations of multiple-image systems. We then approach the role of low-density objects such as cosmic filaments in this framework and discuss potentially observable signatures. Along these lines, we also consider the possibility of massive neutrinos in TeVeS theory and outline a general approach for constraining this hypothesis with the help of cluster lenses. This approach is then demonstrated using the cluster lens A2390 with its remarkable straight arc. Presenting a general framework to explore the nonlinear clustering of density perturbations in coupled scalar field models, we then consider a particular chameleon model and highlight the possibility of measurable effects on intermediate scales, i.e. those relevant for galaxy clusters. Finally, we discuss the prospects of applying similar methods in the context of TeVeS and present an ansatz which allows to cast the linear perturbation equations into a more convenient form
Appearance-disappearance Relation In 3 + Ns Short-baseline Neutrino Oscillations
No full textWe derive the relation between the amplitudes of short-baseline appearance and disappearance oscillations in 3 + Ns neutrino mixing schemes which is the origin of the appearance-disappearance tension that is found from the analysis of the existing data in any 3 + Ns neutrino mixing scheme. We illustrate the power of the relation to reveal the appearance-disappearance tension in the cases of 3 + 1 and 3 + 2 mixing using the results of global fits of short-baseline neutrino oscillation data. © 2015 World Scientific Publishing Company.311Bellini, G., Ludhova, L., Ranucci, G., Villante, F., (2014) Adv. High Energy Phys., 2014, p. 191960Wang, Y., Xing, Z.-Z., arXiv: 1504.06155Mention, G., (2011) Phys. Rev. D, 83, p. 073006Mueller, T.A., (2011) Phys. Rev. C, 83, p. 054615Huber, P., (2011) Phys. Rev. C, 84, p. 024617Abdurashitov, J.N., (2006) Phys. Rev. C, 73, p. 045805. , SAGELaveder, M., (2007) Nucl. Phys. Proc. Suppl., 168, p. 344Giunti, C., Laveder, M., (2007) Mod. Phys. Lett. A, 22, p. 2499Giunti, C., Laveder, M., (2011) Phys. Rev. C, 83, p. 065504Giunti, C., Laveder, M., Li, Y., Liu, Q., Long, H., (2012) Phys. Rev. D, 86, p. 113014Kaether, F., Hampel, W., Heusser, G., Kiko, J., Kirsten, T., (2010) Phys. Lett. B, 685, p. 47Abdurashitov, J.N., (2009) Phys. Rev. C, 80, p. 015807. , SAGEAthanassopoulos, C., (1995) Phys. Rev. Lett., 75, p. 2650. , LSNDAguilar, A., (2001) Phys. Rev. D, 64, p. 112007. , LSNDPontecorvo, B., (1968) Sov. Phys.-JETP, 26, p. 984Sorel, M., Conrad, J., Shaevitz, M., (2004) Phys. Rev. D, 70, p. 073004Karagiorgi, G., (2007) Phys. Rev. D, 75, p. 013011Maltoni, M., Schwetz, T., (2007) Phys. Rev. D, 76, p. 093005Karagiorgi, G., Djurcic, Z., Conrad, J., Shaevitz, M.H., Sorel, M., (2009) Phys. Rev. D, 80, p. 073001Donini, A., Hernandez, P., Lopez-Pavon, J., Maltoni, M., Schwetz, T., (2012) JHEP, 7, p. 161Nelson, A.E., (2011) Phys. Rev. D, 84, p. 053001Fan, J., Langacker, P., (2012) JHEP, 4, p. 083Kuflik, E., McDermott, S.D., Zurek, K.M., (2012) Phys. Rev. D, 86, p. 033015Huang, J., Nelson, A.E., (2013) Phys. Rev. D, 88, p. 033016Kopp, J., Maltoni, M., Schwetz, T., (2011) Phys. Rev. Lett., 107, p. 091801Kopp, J., Machado, P.A.N., Maltoni, M., Schwetz, T., (2013) JHEP, 1305, p. 050Okada, N., Yasuda, O., (1997) Int. J. Mod. Phys. A, 12, p. 3669Bilenky, S.M., Giunti, C., Grimus, W., (1998) Eur. Phys. J. C, 1, p. 247Bilenky, S.M., Giunti, C., Grimus, W., (1999) Prog. Part. Nucl. Phys., 43, p. 1Bilenky, S.M., Giunti, C., Grimus, W., Schwetz, T., (1999) Phys. Rev. D, 60, p. 073007Giunti, C., Laveder, M., (2001) JHEP, 2, p. 001Peres, O., Smirnov, A., (2001) Nucl. Phys. B, 599, p. 3Grimus, W., Schwetz, T., (2001) Eur. Phys. J. C, 20, p. 1Maltoni, M., Schwetz, T., Tortola, M.A., Valle, J.W.F., (2002) Nucl. Phys. B, 643, p. 321Maltoni, M., Schwetz, T., Tortola, M., Valle, J., (2004) New J. Phys., 6, p. 122Gonzalez-Garcia, M.C., Maltoni, M., (2008) Phys. Rep., 460, p. 1Akhmedov, E., Schwetz, T., (2010) JHEP, 10, p. 115Giunti, C., Laveder, M., (2011) Phys. Rev. D, 84, p. 073008Giunti, C., Laveder, M., (2011) Phys. Rev. D, 84, p. 093006Giunti, C., Laveder, M., (2011) Phys. Lett. B, 706, p. 200Conrad, J., Ignarra, C., Karagiorgi, G., Shaevitz, M., Spitz, J., (2013) Adv. High Energy Phys., 2013, p. 163897Archidiacono, M., Fornengo, N., Giunti, C., Melchiorri, A., (2012) Phys. Rev. D, 86, p. 065028Archidiacono, M., Fornengo, N., Giunti, C., Hannestad, S., Melchiorri, A., (2013) Phys. Rev. D, 87, p. 125034Giunti, C., Laveder, M., Li, Y., Long, H., (2013) Phys. Rev. D, 88, p. 073008Bilenky, S., arXiv: 1208.2497Bilenky, S., (2015) Phys. Part. Nucl. Lett., 12, p. 453Aguilar-Arevalo, A.A., (2009) Phys. Rev. Lett., 102, p. 101802Aguilar-Arevalo, A., (2013) Phys. Rev. Lett., 110, p. 161801Chen, H., (2007) FERMILAB-PROPOSAL-0974Szelc, A.M., (2015) AIP Conf. Proc., 1666, p. 18000
High Power Cyclotrons for the Neutrino Experiments DAEδALUS and IsoDAR
No full textDAEδALUS (Decay At rest Experiment for δcp At a Laboratory for Underground Science) has been proposed to measure the value of the CP violating phase delta through the oscillation of low energy muon anti-neutrinos to electron antineutrinos. With a single large detector, three accelerators at different distances enable the oscillation to be measured with sufficient accuracy. We have proposed the superconducting multi-megawatt DAEδALUS Supercinducting Ring Cyclotron (DSRC) as the means of producing the 800 MeV 12 mA protons required, through the acceleration of H2+, ions with highly efficient stripping extraction. The DSRC comprises twin ion sources and injector cyclotrons, followed by a booster. The injector cyclotron can also be used for a separate experiment, IsoDAR (Isotope Decay At Rest) in which low energy protons produce Lithium 8, and thus a very pure electron antineutrino source which can be used to measure, or rule out, short range oscillation to a sterile neutrino. We describe recent developments in the designs of the injector and the booster, and the prospects for the two experiments
Prospects of light sterile neutrino oscillation and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>C</mml:mi><mml:mi>P</mml:mi></mml:mrow></mml:math> violation searches at the Fermilab Short Baseline Neutrino Facility
No full textWe investigate the ability of the short baseline neutrino (SBN) experimental program at Fermilab to test the globally-allowed (3 þ N) sterile neutrino oscillation parameter space. We explicitly consider the globally-allowed parameter space for the (3 þ 1), (3 þ 2), and (3 þ 3) sterile neutrino oscillation scenarios. We find that SBN can probe with 5σ sensitivity more than 85%, 95% and 55% of the parameter space currently allowed at 99% confidence level for the (3 þ 1), (3 þ 2) and (3 þ 3) scenarios, respectively, with the (3 þ N) allowed space used in these studies closely resembling that of previous studies [J. M. Conrad, C. M. Ignarra, G. Karagiorgi, M. H. Shaevitz, and J. Spitz, Adv. High Energy Phys. 2013, 1 (2013).], calculated using the same methodology. In the case of the (3 þ 2) and (3 þ 3) scenarios, CP-violating phases appear in the oscillation probability terms, leading to observable differences in the appearance probabilities of neutrinos and antineutrinos. We explore SBN’s sensitivity to those phases for the (3 þ 2) scenario through the currently planned neutrino beam running, and investigate potential improvements through additional antineutrino beam running. We show that, if antineutrino exposure is considered, for maximal values of the (3 þ 2) CP-violating phase ϕ54, SBN could be the first experiment to directly observe ∼2σ hints of CP violation associated with an extended lepton sector
- …
