Conveners
Working Group 2: Neutrino Physics: Solar, Supernova and Terrestrial Neutrinos- Chair: Kate Scholberg
- Orlando L. G. Peres (State University at Campinas)
- Kate Scholberg (Duke University)
- Thomas Schwetz-Mangold (Max-Planck-Gesellschaft (DE))
Working Group 2: Neutrino Physics: Long-Baseline Oscillation Experiments - Chair: Hiroshi Nunokawa
- Kate Scholberg (Duke University)
- Orlando L. G. Peres (State University at Campinas)
- Thomas Schwetz-Mangold (Max-Planck-Gesellschaft (DE))
Working Group 2: Neutrino Physics: Future Long-Baseline Experiments - Chair: Milind Diwan
- Thomas Schwetz-Mangold (Max-Planck-Gesellschaft (DE))
- Kate Scholberg (Duke University)
- Orlando L. G. Peres (State University at Campinas)
Working Group 2: Neutrino Physics: Theory - Chair: Gustavo C. Branco
- Kate Scholberg (Duke University)
- Thomas Schwetz-Mangold (Max-Planck-Gesellschaft (DE))
- Orlando L. G. Peres (State University at Campinas)
Working Group 2: Neutrino Physics: Cross-Sections- Chair: Orlando Peres
- Orlando L. G. Peres (State University at Campinas)
- Thomas Schwetz-Mangold (Max-Planck-Gesellschaft (DE))
- Kate Scholberg (Duke University)
Working Group 2: Neutrino Physics: Neutrinoless Double Beta Decay- Chair: Marcelo M. Guzzo
- Thomas Schwetz-Mangold (Max-Planck-Gesellschaft (DE))
- Kate Scholberg (Duke University)
- Orlando L. G. Peres (State University at Campinas)
Working Group 2: Neutrino Physics: Low-Energy Neutrinos- Chair: Pedro C. de Holanda
- Orlando L. G. Peres (State University at Campinas)
- Thomas Schwetz-Mangold (Max-Planck-Gesellschaft (DE))
- Kate Scholberg (Duke University)
Working Group 2: Neutrino Physics: Sterile and Exotic Neutrino Physics - Chair: Thomas Schwetz-Mangold
- Kate Scholberg (Duke University)
- Orlando L. G. Peres (State University at Campinas)
- Thomas Schwetz-Mangold (Max-Planck-Gesellschaft (DE))
Working Group 2: Neutrino Physics: Liquid Argon TPC Detectors- Chair: Joao Dos Anjos
- Kate Scholberg (Duke University)
- Thomas Schwetz-Mangold (Max-Planck-Gesellschaft (DE))
- Orlando L. G. Peres (State University at Campinas)
Michael Smy
(UCI)
17/09/2013, 09:00
Working Group 2
talk
We present a strong indication that the elastic scattering rate of solar
$^8$B neutrinos with electrons in the Super-Kamiokande detector is larger
when the neutrinos pass through the earth during night time. We determine
the day/night asymmetry to be -3.2$\pm$1.1(stat)$\pm$0.5(syst)\% which deviates
from zero by 2.7$\sigma$. A non-zero Super-Kamiokande day/night
asymmetry implies that...
Dr
Takatomi Yano
(Okayama University)
17/09/2013, 09:22
Working Group 2
talk
GADZOOKS! is a upgrade project for Super-Kamiokande
with a new neutrino detection method using gadolinium-loaded water.
In this method, events due to anti-neutrino charged-current interactions on protons (i.e., inverse beta decay) are identified by the coincident detection of a prompt positron signal and a delayed gamma-ray signal from neutron capture on gadolinium which is dissolved in the...
Sovan chakraborty
(M)
17/09/2013, 09:44
Working Group 2
talk
Supernovae (SN) are one of the highest energetic astrophysical events. Almost all the enormous energy (10^(53) ergs) released during such an event is emitted in terms of neutrinos. These neutrinos while free streaming out of the SN will undergo flavor oscillations. Apart from the usual MSW oscillations the SN neutrinos will have nonlinear flavor evolution due to neutrino-neutrino interactions....
Livia Ludhova
(INFN Milano)
17/09/2013, 10:06
Working Group 2
talk
Borexino is a solar neutrino and geoneutrino detector currently running at the Laboratori del Gran Sasso in Italy.
The first phase of the experiment has been completed in 2010 and, after a successful purification campaign which have brought down the background further, a second phase is now in progress. The talk will report on the Phase I final results and on the first results of the Phase...
Dr
Eduardo Medinaceli
(Padova University & INFN)
17/09/2013, 15:00
Working Group 2
talk
OPERA (Oscillation Project with Emulsion-tRacking Apparatus) was built to prove muon to tau neutrino oscillations in appearance mode, through the direct observation of tau neutrinos coming from a pure muon neutrino beam produced at CERN.
OPERA is a modular hybrid detector with a high target mass, instrumented with electronic sensors to identify the interaction type and position inside the...
Benjamin Still
(Queen Mary, University of London)
17/09/2013, 15:22
Working Group 2
talk
The Tokai to Kamioka (T2K) experiment is a long baseline neutrino oscillation experiment situated in Japan. A high intensity neutrino beam is produced at the Japan Proton Accelerator Research Complex, in Tokai, Japan. A near detector complex, situated 280 m from the neutrino production target, and the far detector at 295 km, are used to detect the neutrinos from this beam. This talk will...
Samuel Robert Childress
(Unknown)
17/09/2013, 15:44
Working Group 2
talk
Neutrino oscillation is studied in the MINOS experiment with the NuMI beam line by measuring neutrino and anti-neutrino interactions with magnetized near and far detectors. We report on results obtained with our complete beam exposure of 1.56 x 10^21 POT from 2005 to 2012, and also 37.88 kton-years of atmospheric neutrinos. Presented are the most precise measurements to date of mass...
Denis Perevalov
(Fermi National Accelerator Laboratory)
17/09/2013, 16:06
Working Group 2
talk
NOvA is an off-axis long baseline neutrino experiment searching for $\nu_\mu\to\nu_e$ oscillations using an upgraded NuMI neutrino beam from Fermilab, Batavia, IL.
The main physics goal is a measurement of the CP violation and establishing the neutrino masses hierarchy.
A large 14 kton Far detector, comprised of liquid scintillator contained in extruded PVC cells, will also provide an...
Juan-Pablo Yanez
(DESY)
17/09/2013, 16:28
Working Group 2
talk
We present preliminary results on neutrino oscillations with the first year of data of the completed IceCube detector. IceCube is a cubic kilometer ice Cherenkov high-energy neutrino detector. DeepCore, a region of denser instrumentation in the lower center of IceCube, permits the detection of atmospheric neutrinos with energies as low as 10 GeV.
The disappearance pattern of muon neutrinos...
Pilar Coloma
(Virginia Tech University)
17/09/2013, 17:30
Working Group 2
talk
With the large value of $\theta_{13}$ recently discovered, the measurement of the neutrino mass ordering (hierarchy) may be accesible at non-beam experiments. Moreover, the present generation of long baseline experiments is expected to see at least a hint for this parameter, while phase I of the LBNE project is expected to obtain a significance between 3 and 5$\sigma$. However, the neutrino...
Prof.
Hisakazu Minakata
(PUC-Rio)
17/09/2013, 17:52
Working Group 2
talk
In precision measurement era the uncertainty of the leptonic CP violating phase \delta will be dominated by error of \theta_23. We argue that the right strategy is to determine \theta_23 and \delta at the same time by using \nu_e appearance channels. We discuss the nature of such measurement including new degeneracy, the \theta_23 intrinsic degeneracy. A detailed simulation with a few...
Christopher Mauger
(Los Alamos National Laboratory)
17/09/2013, 18:14
Working Group 2
talk
The Long-Baseline Neutrino Experiment is a broad scientific program being developed in the United States as an international partnership. LBNE consists of an intense neutrino beam produced at Fermi National Accelerator Laboratory (Fermilab), a highly capable set of neutrino detectors on the Fermilab campus, and a large underground liquid argon time-projection chamber (TPC) at Sanford...
Dr
Elena Wildner
(CERN)
17/09/2013, 18:36
Working Group 2
talk
The European Spallation Source (ESS) linac with 5 MW proton-power has the potential to become the proton driver of - in addition to the world’s most intense pulsed spallation neutron source - the world’s most intense neutrino beam. The physics performance of that neutrino Super Beam in conjunction with a megaton Water Cherenkov neutrino detector installed 1000 m down in a mine at a distance of...
Prof.
Vittorio Palladino
(Universita e INFN (IT))
17/09/2013, 18:58
Working Group 2
talk
Multi flavour neutrino beams from a muon storage ring have been established
to be the most far reaching option to measure leptonic CPV and completely
map the PNMS matrix and its unitarity properties. Their intensities and purity
being far superior and better known than those of conventional facilities, that
can not promise instead the ultimate necessary precision.
It is also clear however...
Raymond Volkas
(The University of Melbourne)
19/09/2013, 09:00
Working Group 2
talk
After briefly reviewing current LHC bounds on the type II and III see-saw models of neutrino mass, I shall discuss a systematic approach to radiative Majorana neutrino mass models based on effective, gauge-invariant standard model operators that violate lepton number by two units. The exotic particles that occur in these models can be searched for at the LHC.
Michele Frigerio
(Laboratoire Charles Coulomb)
19/09/2013, 09:22
Working Group 2
talk
Lepton flavour observables provide precise pieces of information about physics beyond the Standard Model.
I will briefly review our present knowledge of lepton masses and mixing angles,
and investigate to what extent we can explain the data in terms of an underlying flavour symmetry.
I will show that viable flavour models exist, that are sufficiently minimal to provide sharp predictions for...
Mr
David Vanegas Forero
(Instituto Superior Técnico de Lisboa)
19/09/2013, 09:44
Working Group 2
talk
The measurement of the non-zero reactor mixing angle has established a new challenge for the theoretical understanding of the lepton mixing. The use of discrete symmetries to successfully explain that mixing is still possible. As an example, we have modified the so called Babu-Ma-Valle model in such a way that we account for the current
neutrino mixing values at 3 sigma. In particular, we...
Dr
Maximiliano A. Rivera
(Departamento de Física, Universidad Técnica Federico Santa María, Casilla 110-V, Valparaiso, Chile)
19/09/2013, 10:06
Working Group 2
talk
We present an extension of the standard model that naturally generate small neutrino masses and provide a dark matter candidate. The dark matter particle is part of a new scalar doublet field that plays a crucial role in radiatively generating neutrino masses. The symmetry that stabilizes the dark matter also suppresses neutrino masses to appear first at three-loop level. Without the need...
Jorge Morfin
(FNAL)
19/09/2013, 11:00
Working Group 2
talk
The interplay of neutrino cross sections on nucleons within a nucleus and the nuclear effects starting with the initial interaction followed by final state interactions are difficult to separate. A survey of recent neutrino nucleus experimental results and models attempting to perform this separation will be presented.
Prof.
Arie Bodek
(University of Rochester (US))
19/09/2013, 11:22
Working Group 2
talk
We use quasielastic electron scattering data on nuclear target to update our parametrization of the enhancement to the transverse response functions in nuclear targets. This enhancement has been attributed to meson exchange currents in nuclei. We parametrize both the overall magnitude of the enhancement and the contribution to the width of the quasielastic peak. The model is in good agreement...
Dr
Diego Gratieri
(UFPel)
19/09/2013, 11:39
Working Group 2
talk
The high parton density present at high energies and large nuclei is expected to modify the lepton- hadron cross section and the associated observables. In this paper we analyse the impact of the
high density effects in the average inelasticity and the neutrino - nucleus cross section at ultra high energies. We compare the predictions associated to the linear DGLAP dynamics with those...
Joel Mousseau
19/09/2013, 11:56
Working Group 2
talk
Neutrino beams provide a unique exposure of solely weakly interacting particles. The MINERvA experiment sits in the high intensity NuMI neutrino beam at Fermilab. MINERvA is equipped with neutrino targets of plastic, graphite, lead and iron which allow precise comparisons of neutrino interactions on a variety of nuclei. This talk will summarize the efforts of multiple charged-current analyses...
Tatsuya Kikawa
(Kyoto University)
19/09/2013, 12:13
Working Group 2
talk
The Tokai to Kamioka (T2K) experiment is a long baseline neutrino oscillation experiment situated in Japan. A high intensity neutrino beam is produced at the Japan Proton Accelerator Research Complex, in Tokai, Japan. The near detector of the T2K experiment is designed to provide a good knowledge of the neutrino beam before the neutrinos oscillate, including measuring the backgrounds and...
Juan Helo
(USM)
19/09/2013, 15:00
Working Group 2
talk
Lepton number violation (LNV) mediated by short range operators can manifest itself in both neutrinoless double beta decay and in processes with same sign dilepton final states at the LHC. We derive limits from existing LHC data at 8 TeV and compare the discovery potential of the forthcoming 14 TeV phase of the LHC with the sensitivity of current and future doble beta decay experiments,...
Estanislao Aguayo
(P)
19/09/2013, 15:22
Working Group 2
talk
The Majorana collaboration is searching for neutrinoless double beta decay using 76Ge, which
has been shown to have a number of advantages in terms of sensitivities and backgrounds. The
observation of neutrinoless double-beta decay would show that lepton number is violated and that
neutrinos are Majorana particles and would simultaneously provide information on neutrino mass.
Attaining...
David Moore
(EXO Collaboration)
19/09/2013, 15:41
Working Group 2
talk
The Enriched Xenon Observatory (EXO) is an experimental program searching for neutrinoless double beta decay using Xe-136. Observation of this lepton number violating decay would demonstrate that neutrinos are Majorana particles and allow determination of the absolute neutrino mass scale. The first stage of the experiment, EXO-200, consists of an extremely low background time projection...
Sergio Di Domizio
(INFN and Universita' di Genova)
19/09/2013, 16:00
Working Group 2
talk
CUORE is a 741 kg array of TeO$_2$ bolometers for the search of neurinoless double beta decay in Te-130.
The detector is being constructed at the Laboratori Nazionali del Gran Sasso, Italy, where it will start taking data in 2014.
If the target background of 0.01 counts/(keV kg y) will be reached, in five years of data taking CUORE will have an half life sensitivity of about 10$^{26}$...
nasim fatemighomi
(Queen's University)
19/09/2013, 16:19
Working Group 2
talk
SNO+ is a multi-purpose neutrino experiment in the final phase of construction at SNOLAB. It is the successor to the SNO experiment that replaces heavy water with liquid scintillator in the detector. Its main scientific goal is to search for neutrinoless double beta decay. In addition, SNO+ will detect and study low energy solar neutrinos, anti-neutrinos from nearby reactors and from the...
Jose Angel Hernando Morata
(Universidade de Santiago de Compostela (ES))
19/09/2013, 16:38
Working Group 2
talk
NEXT is an experimental program to search for neutrino double beta decay events using a High Pressure Gas Xenon Chamber with electroluminescence readout. The first phase of the experiment will use 100 kg of Xenon gas enriched to 91% in the 136Xe isotope. NEXT-100 is currently under construction at Canfranc Underground Laboratory (Spain). The detector is an asymmetric time projection chamber...
Mr
Luis Fernando Gomez Gonzalez
(IFGW-Unicamp / APC)
19/09/2013, 17:30
Working Group 2
talk
The Double Chooz experiment is one of the new generation reactor antineutrino disappearance experiments built to measure more precisely the mixing angle Theta 13.
For this, two identical liquid scintillator detectors located at two different baselines of the Chooz Power Plant reactor cores will be installed to make high accuracy measurements of the antineutrino flux and energy.
The value of...
Hyunkwan Seo
(Sungkyunkwan University (KR))
19/09/2013, 17:52
Working Group 2
talk
Reactor Experiment for Neutrino Oscillation(RENO) started data-taking from August, 2011 and has observed the disappearance of reactor electron antineutrinos, consistent with neutrino oscillations. The experiment has made unprecedentedly accurate measurement of reactor neutrino flux, and performed a definitive measurement of the smallest neutrino mixing angle theta_13 based on the...
Dr
J. Pedro Ochoa-Ricoux
(Berkeley)
19/09/2013, 18:14
Working Group 2
talk
The Daya Bay Reactor Neutrino Experiment was designed to measure θ13, the smallest mixing angle in the three-neutrino mixing framework, with unprecedented precision. The experiment consists of multiple identical detectors placed underground at different baselines from three pairs of reactors, a unique configuration that minimizes systematic uncertainties and cosmogenic backgrounds. In 2012...
Joao Anjos
(Centro Brasileiro de Pesquisas Fisicas)
19/09/2013, 18:36
Working Group 2
talk
We present the status of the simulation of the Angra Neutrino Project.
The project aims at measuring neutrinos from the Angra power plant.
The detector is being built at CBPF and will be installed in Angra later this year.
After a short review of the motivation, design and construction of the apparatus, the simulation is discussed.
The foreseen rates of the neutrino signal and of the major...
Thomas Thuemmler
(Karlsruhe Institute of Technology)
19/09/2013, 18:58
Working Group 2
talk
Neutrino properties and especially the determination of the neutrino mass play an important role at the intersections of cosmology, particle physics and astroparticle physics.
The KArlsruhe TRItium Neutrino experiment (KATRIN) investigates single beta decay electrons close to their kinematic endpoint in order to determine the neutrino mass by a model-independent method.
Applying an...
Pedro A N Machado
(Universidade de Sao Paulo (BR))
20/09/2013, 09:00
Working Group 2
talk
Neutrino oscillations involving eV-scale neutrino mass states are investigated in the context of global neutrino oscillation data including short and long-baseline accelerator, reactor, and radioactive source experiments, as well as atmospheric and solar neutrinos. We consider sterile neutrino mass schemes involving one or two mass-squared differences at the eV^2 scale denoted by 3+1, 3+2, and...
Mateus Carneiro
(Estate University of Campinas)
20/09/2013, 09:22
Working Group 2
talk
Mass Varying Neutrinos mechanisms were proposed to link the neutrino mass scale with the dark energy density, addressing the coincidence problem. In some scenarios this mass can present a dependence on the baryonic density felt by neutrinos, creating an effective neutrino mass that depends both on the neutrino and baryonic densities. In this work we study the phenomenological consequence of...
Dr
Arman Esmaili
(UNICAMP)
20/09/2013, 09:44
Working Group 2
talk
Atmospheric neutrino data collected by huge neutrino detectors, such as IceCube, provide the opportunity to probe new physics unprecedentedly, both due to high statistics and also to the high energy range. In this talk we discuss various new physics scenarios that can be probed by these data including: active-sterile neutrino mixing, non-standard neutrino interactions and violation of...
Michael Shaevitz
(Columbia University)
20/09/2013, 10:06
Working Group 2
talk
The IsoDAR experiment uses a novel isotope decay-at-rest (DAR) source of electron antineutrinos using protons from a 60 MeV cyclotron. Paired with KamLAND, the experiment can observe over 800 thousand inverse beta-decay events in five years and do a decisive test of the current hints for sterile neutrino. Daedalus is a phased program leading to a high-sensitivity search for CP violation. The...
Prof.
Jan Kisiel
(University of Silesia, Katowice, Poland)
20/09/2013, 11:00
Working Group 2
talk
ICARUS-T600 is the first large-scale realization of the Liquid Argon Time Projection Chamber detection technology for neutrino physics and nucleon decay searches. It has been running in the underground Gran Sasso laboratory for three years (from May 2010 to June 2013) detecting both neutrinos from the CNGS beam and cosmics. The results obtained so far will be presented with special emphasis...
Jonathan Asaadi
(Syracuse University)
20/09/2013, 11:22
Working Group 2
talk
Liquid argon time projection chambers provide an extraordinary level of information about the interactions of neutrinos. The Argon Neutrino Teststand, or ArgoNeuT, experiment deployed a relatively small detector in the NuMI neutrino beamline at Fermilab, and the data collected during that endeavor is now being used to measure neutrino and antineutrino interaction cross-sections. This talk...
Andrzej Szelc
(Yale University)
20/09/2013, 11:44
Working Group 2
talk
Liquid Argon Time Projection Chambers are quickly becoming one of the most promising detector technologies in neutrino
physics. They offer very good 3D and calorimetric resolution and allow relatively straight forward construction of large mass
detectors making them a great candidate for current and future precision neutrino measurements. A prime example is the
MicroBooNE experiment set to...
Christopher Mauger
(Los Alamos National Laboratory)
20/09/2013, 12:06
Working Group 2
talk
The Cryogenic Apparatus for Precision Tests of Argon Interactions with Neutrinos (CAPTAIN) program is designed to make measurements of scientific importance to long-baseline neutrino physics and physics topics that will be explored by large underground detectors. CAPTAIN began as part of a Los Alamos National Laboratory (LANL) Laboratory Directed Research and Development (LDRD) project and...
