3
3.0
Feb 14, 2017
02/17
Feb 14, 2017
by
Carlo Giunti
texts
eye 3
favorite 0
comment 0
We consider the possibility that the reactor antineutrino anomaly is due to a miscalculation of one or more of the $^{235}\text{U}$, $^{238}\text{U}$, $^{239}\text{Pu}$, and $^{241}\text{Pu}$ reactor antineutrino fluxes. From the fit of the data we obtain the precise determination $\sigma_{f,235} = ( 6.33 \pm 0.08 ) \times 10^{-43} \, \text{cm}^2 / \text{fission}$ of the $^{235}\text{U}$ cross section per fission, which is more precise than the calculated value and differs from it by...
Topics: High Energy Physics - Experiment, High Energy Physics - Phenomenology, Nuclear Experiment
Source: http://arxiv.org/abs/1702.04139
5
5.0
Dec 22, 2016
12/16
Dec 22, 2016
by
Francesco Capozzi; Carlo Giunti; Marco Laveder; Antonio Palazzo
texts
eye 5
favorite 0
comment 0
Recent studies have evidenced that long-baseline (LBL) experiments are sensitive to the extra CP-phases involved with light sterile neutrinos, whose existence is suggested by several anomalous short-baseline (SBL) results. We show that, within the 3+1 scheme, the combination of the existing SBL data with the LBL results coming from the two currently running experiments NO$\nu$A and T2K, enables us to simultaneously constrain two active-sterile mixing angles $\theta_{14}$ and $\theta_{24}$ and...
Topics: Instrumentation and Detectors, High Energy Physics - Phenomenology, Physics, High Energy Physics -...
Source: http://arxiv.org/abs/1612.07764
4
4.0
Sep 15, 2016
09/16
Sep 15, 2016
by
Carlo Giunti
texts
eye 4
favorite 0
comment 0
The current status of the phenomenology of short-baseline neutrino oscillations induced by light sterile neutrinos in the framework of 3+1 mixing is reviewed.
Topics: Astrophysics, High Energy Physics - Phenomenology, Cosmology and Nongalactic Astrophysics, High...
Source: http://arxiv.org/abs/1609.04688
4
4.0
Aug 14, 2016
08/16
Aug 14, 2016
by
Carlo Giunti
texts
eye 4
favorite 0
comment 0
We investigate which among the reactor antineutrino fluxes from the decays of the fission products of $^{235}\text{U}$, $^{238}\text{U}$, $^{239}\text{Pu}$, and $^{241}\text{Pu}$ may be responsible for the reactor antineutrino anomaly if the anomaly is due to a miscalculation of the antineutrino fluxes. We find that it is very likely that at least the calculation of the $^{235}\text{U}$ flux must be revised. From the fit of the data we obtain the precise determination $\sigma_{f,235} = ( 6.33...
Topics: Nuclear Theory, High Energy Physics - Phenomenology, Nuclear Experiment, High Energy Physics -...
Source: http://arxiv.org/abs/1608.04096
9
9.0
Jun 24, 2016
06/16
Jun 24, 2016
by
Maria Archidiacono; Stefano Gariazzo; Carlo Giunti; Steen Hannestad; Rasmus Hansen; Marco Laveder; Thomas Tram
texts
eye 9
favorite 0
comment 0
The Short BaseLine (SBL) neutrino oscillation anomalies hint at the presence of a sterile neutrino with a mass of around 1 eV. However, such a neutrino is incompatible with cosmological data, in particular observations of the Cosmic Microwave Background (CMB) anisotropies. However, this conclusion can change by invoking new physics. One possibility is to introduce a secret interaction in the sterile neutrino sector mediated by a light pseudoscalar. In this pseudoscalar model, CMB data prefer a...
Topics: Astrophysics, High Energy Physics - Phenomenology, Cosmology and Nongalactic Astrophysics
Source: http://arxiv.org/abs/1606.07673
2
2.0
Dec 15, 2015
12/15
Dec 15, 2015
by
Carlo Giunti
texts
eye 2
favorite 0
comment 0
The indications in favor of the existence of light sterile neutrinos at the eV scale found in short-baseline neutrino oscillation experiments is reviewed. The future perspectives of short-baseline neutrino oscillation experiments and the connections with beta-decay measurements of the neutrino masses and with neutrinoless double-beta decay experiments are discussed.
Topics: High Energy Physics - Experiment, Cosmology and Nongalactic Astrophysics, Astrophysics, High Energy...
Source: http://arxiv.org/abs/1512.04758
16
16
Jun 17, 2015
06/15
Jun 17, 2015
by
Carlo Giunti; Konstantin A. Kouzakov; Yu-Feng Li; Alexey V. Lokhov; Alexander I. Studenikin; Shun Zhou
texts
eye 16
favorite 0
comment 0
An overview of neutrino electromagnetic properties, which open a door to the new physics beyond the Standard Model, is given. The effects of neutrino electromagnetic interactions both in terrestrial experiments and in astrophysical environments are discussed. The experimental bounds on neutrino electromagnetic characteristics are summarized. Future astrophysical probes of electromagnetic neutrinos are outlined.
Topic: High Energy Physics - Phenomenology
Source: http://arxiv.org/abs/1506.05387
2
2.0
Apr 7, 2014
04/14
Apr 7, 2014
by
Maria Archidiacono; Nicolao Fornengo; Stefano Gariazzo; Carlo Giunti; Steen Hannestad; Marco Laveder
texts
eye 2
favorite 0
comment 0
The recent discovery of B-modes in the polarization pattern of the Cosmic Microwave Background by the BICEP2 experiment has important implications for neutrino physics. We revisit cosmological bounds on light sterile neutrinos and show that they are compatible with all current cosmological data provided that the mass is relatively low. Using CMB data, including BICEP-2, we find an upper bound of $m_s < 0.85$ eV ($2\sigma$ Confidence Level). This bound is strengthened to 0.48 eV when HST...
Topics: High Energy Physics - Phenomenology, Astrophysics, Cosmology and Nongalactic Astrophysics
Source: http://arxiv.org/abs/1404.1794
2
2.0
Mar 25, 2014
03/14
Mar 25, 2014
by
Carlo Giunti; Alexander Studenikin
texts
eye 2
favorite 0
comment 0
We review the theory and phenomenology of neutrino electromagnetic interactions, which give us powerful tools to probe the physics beyond the Standard Model. After a derivation of the general structure of the electromagnetic interactions of Dirac and Majorana neutrinos in the one-photon approximation, we discuss the effects of neutrino electromagnetic interactions in terrestrial experiments and in astrophysical environments. We present the experimental bounds on neutrino electromagnetic...
Topics: High Energy Physics - Phenomenology, Astrophysics, Solar and Stellar Astrophysics, High Energy...
Source: http://arxiv.org/abs/1403.6344
61
61
Jun 24, 2013
06/13
Jun 24, 2013
by
Maria Archidiacono; Nicolao Fornengo; Carlo Giunti; Steen Hannestad; Alessandro Melchiorri
texts
eye 61
favorite 0
comment 0
Cosmology and short baseline neutrino oscillation data both hint at the existence of light sterile neutrinos with masses in the 1 eV range. Here we perform a detailed analysis of the sterile neutrino scenario using both cosmological and SBL data. We have additionally considered the possibility that the extra neutrino degrees of freedom are not fully thermalised in the early universe. Even when analyzing only cosmological data we find a preference for the existence of massive sterile neutrinos...
Source: http://arxiv.org/abs/1302.6720v2
82
82
Jun 7, 2013
06/13
Jun 7, 2013
by
Alessandro Mirizzi; Gianpiero Mangano; Ninetta Saviano; Enrico Borriello; Carlo Giunti; Gennaro Miele; Ofelia Pisanti
texts
eye 82
favorite 0
comment 0
Light sterile neutrinos can be excited by oscillations with active neutrinos in the early universe. Their properties can be constrained by their contribution as extra-radiation, parameterized in terms of the effective number of neutrino species N_ eff, and to the universe energy density today \Omega_\nu h^2. Both these parameters have been measured to quite a good precision by the Planck satellite experiment. We use this result to update the bounds on the parameter space of (3+1) sterile...
Source: http://arxiv.org/abs/1303.5368v2
46
46
Mar 19, 2013
03/13
Mar 19, 2013
by
Jostein R. Kristiansen; Øystein Elgarøy; Carlo Giunti; Marco Laveder
texts
eye 46
favorite 0
comment 0
There are hints, both from cosmology and from neutrino oscillation experiments, that one or two sterile neutrinos with eV masses are favored. We consider the implications of combining data from short baseline neutrino experiments with cosmological observations. In particular we consider cosmological models where the equation of state of dark energy and the curvature are allowed to vary. We find that the consistency of results from short baseline experiments and cosmology is dependent on the...
Source: http://arxiv.org/abs/1303.4654v1
40
40
Jul 27, 2012
07/12
Jul 27, 2012
by
Maria Archidiacono; Nicolao Fornengo; Carlo Giunti; Alessandro Melchiorri
texts
eye 40
favorite 0
comment 0
Recent results from short--baseline neutrino oscillation experiments and Cosmic Microwave Background anisotropy measurements suggest the presence of additional sterile neutrinos. In this paper we properly combine these data sets to derive bounds on the sterile neutrino masses in the 3+1 and 3+2 frameworks, finding a potentially good agreement between the two datasets. However, when galaxy clustering is included in the analysis a tension between the oscillation and cosmological data is clearly...
Source: http://arxiv.org/abs/1207.6515v1
96
96
Nov 23, 2011
11/11
Nov 23, 2011
by
Carlo Giunti; Marco Laveder
texts
eye 96
favorite 0
comment 0
We investigate the possible effects of short-baseline antinu_e disappearance implied by the reactor antineutrino anomaly on the Double-Chooz determination of theta_{13} through the normalization of the initial antineutrino flux with the Bugey-4 measurement. We show that the effects are negligible and the value of theta_{13} obtained by the Double-Chooz collaboration is accurate only if Delta m^2_{41} is larger than about 3 eV^2. For smaller values of Delta m^2_{41} the short-baseline...
Source: http://arxiv.org/abs/1111.5211v2
48
48
Nov 22, 2011
11/11
Nov 22, 2011
by
Carlo Giunti; Marco Laveder
texts
eye 48
favorite 0
comment 0
We present an update of our analysis of short-baseline neutrino oscillation data in the framework of 3+1 neutrino mixing taking into account the recent update of MiniBooNE antineutrino data and the recent results of the MINOS search for nu_mu disappearance into sterile neutrinos (the more complicated 3+2 neutrino mixing is not needed since the CP-violating difference between MiniBooNE neutrino and antineutrino data has diminished). The results of our fits of short-baseline neutrino oscillation...
Source: http://arxiv.org/abs/1109.4033v2
50
50
Nov 22, 2011
11/11
Nov 22, 2011
by
Carlo Giunti; Marco Laveder
texts
eye 50
favorite 0
comment 0
We present an upgrade of the 3+1 global fit of short-baseline neutrino oscillation data obtained with the addition of KARMEN and LSND nu_e-Carbon scattering data. We discuss the implications for the measurements of the effective neutrino mass in beta-decay and neutrinoless double-beta-decay experiments. We find respective predicted ranges of about 0.1-0.7 eV and 0.01-0.1 eV.
Source: http://arxiv.org/abs/1111.1069v2
53
53
Oct 18, 2011
10/11
Oct 18, 2011
by
Carlo Giunti
texts
eye 53
favorite 0
comment 0
The indications in favor of short-baseline neutrino oscillations, which require the existence of one or more sterile neutrinos, are reviewed. In the framework of 3+1 neutrino mixing, which is the simplest extension of the standard three-neutrino mixing which can partially explain the data, there is a strong tension in the interpretation of the data, mainly due to an incompatibility of the results of appearance and disappearance experiments. In the framework of 3+2 neutrino mixing, CP violation...
Source: http://arxiv.org/abs/1110.3914v1
56
56
Sep 2, 2011
09/11
Sep 2, 2011
by
Carlo Giunti; Marco Laveder
texts
eye 56
favorite 0
comment 0
We present the results of fits of short-baseline neutrino oscillation data in 3+1 and 3+2 neutrino mixing schemes. In spite of the presence of a tension in the interpretation of the data, 3+1 neutrino mixing is attractive for its simplicity and for the natural correspondence of one new entity (a sterile neutrino) with a new effect (short-baseline oscillations). The allowed regions in the oscillation parameter space can be tested in near-future experiments. In the framework of 3+2 neutrino...
Source: http://arxiv.org/abs/1107.1452v3
39
39
Jun 22, 2011
06/11
Jun 22, 2011
by
Carlo Giunti
texts
eye 39
favorite 0
comment 0
After a brief review of the results of solar, atmospheric and long-baseline neutrino oscillation experiments which led to the current three-neutrino mixing paradigm, we discuss indications of neutrino oscillation experiments in favor of short-baseline oscillations which require the existence of one or more sterile neutrinos. We show that the simplest possibility of existence of one sterile neutrino is not enough to fit all data of short-baseline neutrino oscillation experiments because of two...
Source: http://arxiv.org/abs/1106.4479v1
65
65
Mar 28, 2011
03/11
Mar 28, 2011
by
Carlo Giunti; Marco Laveder
texts
eye 65
favorite 0
comment 0
We calculate the statistical significance of the anomalous deficit of electron neutrinos measured in the radioactive source experiments of the GALLEX and SAGE solar neutrino detectors taking into account the uncertainty of the detection cross section. We found that the statistical significance of the anomaly is about 3.0 sigma. A fit of the data in terms of neutrino oscillations favors at about 2.7 sigma short-baseline electron neutrino disappearance with respect to the null hypothesis of no...
Source: http://arxiv.org/abs/1006.3244v3
60
60
Mar 25, 2011
03/11
Mar 25, 2011
by
Carlo Giunti; Marco Laveder
texts
eye 60
favorite 0
comment 0
We analyze the LSND, KARMEN and MiniBooNE data on short-baseline antinu_mu -> antinu_e oscillations and the data on short-baseline antinu_e disappearance obtained in the Bugey-3 and CHOOZ reactor experiments in the framework of 3+1 antineutrino mixing, taking into account the MINOS observation of long-baseline antinu_mu disappearance and the KamLAND observation of very-long-baseline antinu_e disappearance. We show that the fit of the data implies that the short-baseline disappearance of...
Source: http://arxiv.org/abs/1012.0267v3
36
36
Dec 20, 2010
12/10
Dec 20, 2010
by
Carlo Giunti; Marco Laveder
texts
eye 36
favorite 0
comment 0
We analyzed the electron neutrino data of the Gallium radioactive source experiments and the electron antineutrino data of the reactor Bugey and Chooz experiments in terms of neutrino oscillations. We found a hint of a CPT-violating asymmetry of the effective neutrino and antineutrino mixing angles.
Source: http://arxiv.org/abs/1012.4356v1
52
52
Oct 25, 2010
10/10
Oct 25, 2010
by
Carlo Giunti; Marco Laveder
texts
eye 52
favorite 0
comment 0
We analyze the recent results of the MiniBooNE short-baseline experiment on antinu_mu -> antinu_e oscillations in a minimal model-independent framework of antineutrino mixing in conjunction with the positive LSND signal and the negative KARMEN measurements. We show that the data of the three short-baseline antinu_mu -> antinu_e experiments are compatible. Taking into account also the model-independent constraints due to the limits on short-baseline antinu_e disappearance obtained in...
Source: http://arxiv.org/abs/1010.1395v2
66
66
Oct 11, 2010
10/10
Oct 11, 2010
by
Carlo Giunti; Marco Laveder
texts
eye 66
favorite 0
comment 0
We consider the interpretation of the MiniBooNE low-energy anomaly and the Gallium radioactive source experiments anomaly in terms of short-baseline electron neutrino disappearance in the framework of 3+1 four-neutrino mixing schemes. The separate fits of MiniBooNE and Gallium data are highly compatible, with close best-fit values of the effective oscillation parameters Delta m^2 and sin^2 2 theta. The combined fit gives Delta m^2 >~ 0.1 eV^2 and 0.11 < sin^2 2 theta < 0.48 at 2 sigma....
Source: http://arxiv.org/abs/1005.4599v4
39
39
Aug 27, 2010
08/10
Aug 27, 2010
by
Carlo Giunti; Marco Laveder
texts
eye 39
favorite 0
comment 0
We analyzed the electron neutrino data of the Gallium radioactive source experiments and the electron antineutrino data of the reactor Bugey and Chooz experiments in terms of neutrino oscillations allowing for a CPT-violating difference of the squared-masses and mixings of neutrinos and antineutrinos. We found that the discrepancy between the disappearance of electron neutrinos indicated by the data of the Gallium radioactive source experiments and the limits on the disappearance of electron...
Source: http://arxiv.org/abs/1008.4750v1
108
108
Jun 8, 2010
06/10
Jun 8, 2010
by
Carlo Giunti; Alexander Studenikin
texts
eye 108
favorite 0
comment 0
A short review on electromagnetic properties of neutrinos is presented. In spite of many efforts in the theoretical and experimental studies of neutrino electromagnetic properties, they still remain one of the main puzzles related to neutrinos.
Source: http://arxiv.org/abs/1006.1502v1
87
87
Apr 12, 2010
04/10
Apr 12, 2010
by
Carlo Giunti; Alexander Studenikin
texts
eye 87
favorite 0
comment 0
The main goal of the paper is to give a short review on neutrino electromagnetic properties. In the introductory part of the paper a summary on what we really know about neutrinos is given: we discuss the basics of neutrino mass and mixing as well as the phenomenology of neutrino oscillations. This is important for the following discussion on neutrino electromagnetic properties that starts with a derivation of the neutrino electromagnetic vertex function in the most general form, that follows...
Source: http://arxiv.org/abs/0812.3646v5
41
41
Jan 7, 2010
01/10
Jan 7, 2010
by
Carlo Giunti
texts
eye 41
favorite 0
comment 0
It is shown that the Majorana phases of the neutrino mixing matrix cannot have any effect in neutrino oscillations, contrary to the argument presented in arXiv:0912.5266. It is also shown that in a charged-current weak interaction process it is not possible to create a coherent superposition of different flavor neutrinos which is independent of the associated charged leptons.
Source: http://arxiv.org/abs/1001.0760v2
51
51
Jul 16, 2009
07/09
Jul 16, 2009
by
Carlo Giunti; Marco Laveder
texts
eye 51
favorite 0
comment 0
We consider possible indications of Very-Short-BaseLine (VSBL) electron neutrino disappearance into sterile neutrinos in MiniBooNE neutrino data and Gallium radioactive source experiments. We discuss the compatibility of such a disappearance with reactor and MiniBooNE antineutrino data. We find a tension between neutrino and antineutrino data which could be due to: 1) statistical fluctuations; 2) underestimate of systematic uncertainties; 3) exclusion of our hypothesis of VSBL nu_e...
Source: http://arxiv.org/abs/0902.1992v2
59
59
May 28, 2009
05/09
May 28, 2009
by
Carlo Giunti
texts
eye 59
favorite 0
comment 0
The claims that the GSI time anomaly is due to the mixing of neutrinos in the final state of the observed electron-capture decays of hydrogen-like heavy ions are refuted with the help of an analogy with a double-slit experiment. It is a consequence of causality. It is shown that the GSI time anomaly may be caused by quantum beats due to the existence of two coherent energy levels of the decaying ion with an extremely small energy splitting (about $6\times10^{-16} \text{eV}$) and relative...
Source: http://arxiv.org/abs/0905.4620v1
40
40
Dec 10, 2008
12/08
Dec 10, 2008
by
Carlo Giunti
texts
eye 40
favorite 0
comment 0
The claims that the GSI time anomaly is due to the mixing of neutrinos in the final state of the observed electron-capture processes are refuted. With the help of an analogy with a double-slit experiment, it is shown that the standard method of calculation of the rate of an interaction process by adding the rates of production of all the allowed final states, regardless of a possible coherence among them, is correct. It is a consequence of causality. It is shown that the GSI time anomaly may be...
Source: http://arxiv.org/abs/0812.1887v1
48
48
Sep 17, 2008
09/08
Sep 17, 2008
by
Mario A. Acero; Carlo Giunti; Marco Laveder
texts
eye 48
favorite 0
comment 0
The deficit observed in the Gallium radioactive source experiments is interpreted as a possible indication of the disappearance of electron neutrinos. In the effective framework of two-neutrino mixing we obtain $\sin^{2}2\vartheta \gtrsim 0.03$ and $\Delta{m}^{2} \gtrsim 0.1 \text{eV}^{2}$. The compatibility of this result with the data of the Bugey and Chooz reactor short-baseline antineutrino disappearance experiments is studied. It is found that the Bugey data present a hint of neutrino...
Source: http://arxiv.org/abs/0711.4222v3
49
49
Jul 24, 2008
07/08
Jul 24, 2008
by
Carlo Giunti
texts
eye 49
favorite 0
comment 0
Comment on P. Walker, Nature 453 (2008) 864, http://www.nature.com/nature/journal/v453/n7197/full/453864a.html
Source: http://arxiv.org/abs/0807.3818v1
57
57
May 29, 2008
05/08
May 29, 2008
by
Carlo Giunti; Marco Laveder
texts
eye 57
favorite 0
comment 0
The anomalous excess of low-energy nu_e events measured in the MiniBooNE experiment is explained through a renormalization of the absolute neutrino flux and a simultaneous disappearance of the nu_e's in the beam, which is compatible with that indicated by the results of Gallium radioactive source experiments. We present the results of the fit of MiniBooNE data (P(nu_e->nu_e) = 0.64 +0.08 -0.07) and the combined fit of MiniBooNE data and the nu_e disappearance measured in the Gallium...
Source: http://arxiv.org/abs/0707.4593v3
42
42
May 4, 2008
05/08
May 4, 2008
by
Carlo Giunti
texts
eye 42
favorite 0
comment 0
With the help of an analogy with a double-slit experiment, it is shown that the standard method of calculation of the rate of an interaction process by adding the rates of production of all the allowed final states, regardless of a possible coherence among them, is correct. It is a consequence of causality. The claims that the GSI time anomaly is due to the mixing of neutrinos in the final state of the electron-capture process are refuted. It is shown that the GSI time anomaly may be due to...
Source: http://arxiv.org/abs/0805.0431v1
91
91
Apr 17, 2008
04/08
Apr 17, 2008
by
Carlo Giunti
texts
eye 91
favorite 0
comment 0
It is shown that neutrino mixing cannot explain the GSI time anomaly, refuting recent claims in this direction. Addendum 1: Remarks on arXiv:0801.1465. Addendum 2: Quantum effects in GSI nuclear decay.
Source: http://arxiv.org/abs/0801.4639v3
56
56
Jan 4, 2008
01/08
Jan 4, 2008
by
Carlo Giunti
texts
eye 56
favorite 0
comment 0
The standard theory of neutrino oscillations is reviewed, highlighting the main assumptions: the definition of the flavor states, the equal-momentum assumption and the time = distance assumption. It is shown that the standard flavor states are correct approximations of the states that describe neutrinos in oscillation experiments. The equal-momentum assumption is shown to be unnecessary for the derivation of the oscillation probability. The time = distance assumption derives from the...
Source: http://arxiv.org/abs/0801.0653v1
40
40
Jul 3, 2007
07/07
Jul 3, 2007
by
Carlo Giunti; Marco Laveder
texts
eye 40
favorite 0
comment 0
We suggest the possibility that the anomalies observed in the LSND experiment and the Gallium radioactive source experiments may be due to neutrino oscillations generated by a large squared-mass difference of about 20 - 30 eV^2. We consider the simplest 3+1 four-neutrino scheme that can accommodate also the observed solar and atmospheric neutrino oscillations. We show that, in this framework, the disappearance of nu_e and nu_mu in short-baseline neutrino oscillation experiments is mainly due to...
Source: http://arxiv.org/abs/hep-ph/0610352v2
50
50
Nov 23, 2006
11/06
Nov 23, 2006
by
Carlo Giunti
texts
eye 50
favorite 0
comment 0
The definition and derivation of flavor neutrino states in the framework of standard Quantum Field Theory is reviewed, clarifying some subtle points. It is shown that a flavor neutrino state that describes a neutrino produced or detected in a charged-current weak interaction process depends on the process under consideration and is appropriate for the description of neutrino oscillations as well as for the calculation of neutrino production or detection rates. Hence, we have a consistent...
Source: http://arxiv.org/abs/hep-ph/0608070v2
38
38
Nov 9, 2006
11/06
Nov 9, 2006
by
Carlo Giunti
texts
eye 38
favorite 0
comment 0
We review some fundamental aspects of the theory of neutrino masses and mixing. The results of neutrino oscillation experiments are interpreted as evidence of three-neutrino mixing. Implications for the mixing parameters and the neutrino masses are discussed, with emphasis on the connection with the measurements of the absolute values of neutrino masses in beta decay and neutrinoless double-beta decay experiments and cosmological observations.
Source: http://arxiv.org/abs/hep-ph/0611125v1
45
45
Nov 10, 2005
11/05
Nov 10, 2005
by
Carlo Giunti
texts
eye 45
favorite 0
comment 0
The main aspects of the phenomenology of absolute neutrino masses are reviewed, focusing on the limits on neutrino masses obtained in tritium beta decay experiments, cosmological observations and neutrinoless double-beta decay experiments.
Source: http://arxiv.org/abs/hep-ph/0511131v1
41
41
Dec 11, 2004
12/04
Dec 11, 2004
by
Carlo Giunti
texts
eye 41
favorite 0
comment 0
The phenomenology of absolute neutrino masses is reviewed, focusing on tritium beta decay, cosmological measurements and neutrinoless double-beta decay.
Source: http://arxiv.org/abs/hep-ph/0412148v1
55
55
Oct 1, 2004
10/04
Oct 1, 2004
by
Carlo Giunti; Marco Laveder
texts
eye 55
favorite 0
comment 0
In this review we present the main features of the current status of neutrino physics. After a review of the theory of neutrino mixing and oscillations, we discuss the current status of solar and atmospheric neutrino oscillation experiments. We show that the current data can be nicely accommodated in the framework of three-neutrino mixing. We discuss also the problem of the determination of the absolute neutrino mass scale through Tritium beta-decay experiments and astrophysical observations,...
Source: http://arxiv.org/abs/hep-ph/0310238v2
70
70
Sep 20, 2004
09/04
Sep 20, 2004
by
Carlo Giunti
texts
eye 70
favorite 0
comment 0
We present a derivation of the flavor neutrino states which describe neutrinos produced or detected in charged-current weak-interaction processes, including those operating in neutrino oscillation experiments. We also present a covariant derivation of the probability of neutrino oscillations which is consistent with the fact that flavor is Lorentz-invariant. Finally, we clarify the negative answers to three commonly asked questions: "Do charged leptons oscillate?"; "Is the...
Source: http://arxiv.org/abs/hep-ph/0409230v1
55
55
Aug 25, 2004
08/04
Aug 25, 2004
by
Carlo Giunti
texts
eye 55
favorite 0
comment 0
It is shown that it is possible to construct an infinity of Fock spaces of flavor neutrinos depending on arbitrary unphysical mass parameters, in agreement with the theory of Blasone and Vitiello in the version proposed by Fujii, Habe and Yabuki. However, we show that these flavor neutrino Fock spaces are clever mathematical constructs without physical relevance, because the hypothesis that neutrinos produced or detected in charged-current weak interaction processes are described by flavor...
Source: http://arxiv.org/abs/hep-ph/0312256v2
42
42
Feb 20, 2004
02/04
Feb 20, 2004
by
Carlo Giunti
texts
eye 42
favorite 0
comment 0
It is shown that a flavor neutrino state that describes a neutrino produced or detected in a charged-current weak interaction process depends on the process under consideration and is appropriate for the description of neutrino oscillations as well as for the calculation of neutrino production or detection rates. Hence, we have a consistent framework for the description of neutrino oscillations and interactions.
Source: http://arxiv.org/abs/hep-ph/0402217v1
58
58
Feb 6, 2004
02/04
Feb 6, 2004
by
Carlo Giunti
texts
eye 58
favorite 0
comment 0
We review critically the main assumptions on which the standard theory of neutrino oscillations is based. We show that all assumptions are realistic, except the so-called "equal momentum assumption", which however is irrelevant. We conclude that the standard expression for the probability of neutrino oscillations is robust.
Source: http://arxiv.org/abs/hep-ph/0311241v2
107
107
Jan 30, 2004
01/04
Jan 30, 2004
by
Carlo Giunti
texts
eye 107
favorite 0
comment 0
We review critically the main assumptions on which the standard theory of neutrino oscillations is based. We show that all assumptions are realistic, except the so-called "equal momentum assumption", which however is irrelevant. We briefly review the covariant plane-wave derivation of neutrino oscillations and a quantum field theoretical wave packet model of neutrino oscillations. We show that both approaches lead to the standard expression for the oscillation phase. The wave packet...
Source: http://arxiv.org/abs/hep-ph/0401244v1
44
44
Jan 27, 2004
01/04
Jan 27, 2004
by
Roland M. Crocker; Carlo Giunti; and Daniel J. Mortlock
texts
eye 44
favorite 0
comment 0
Gravitational lensing introduces the possibility of multiple (macroscopic) paths from an astrophysical neutrino source to a detector. Such a multiplicity of paths can allow for quantum mechanical interference to take place that is qualitatively different to neutrino oscillations in flat space. After an illustrative example clarifying some under-appreciated subtleties of the phase calculation, we derive the form of the quantum mechanical phase for a neutrino mass eigenstate propagating...
Source: http://arxiv.org/abs/hep-ph/0308168v2
47
47
Dec 22, 2003
12/03
Dec 22, 2003
by
Carlo Giunti
texts
eye 47
favorite 0
comment 0
I refute the criticisms of hep-ph/0311241 raised in hep-ph/0312151.
Source: http://arxiv.org/abs/hep-ph/0312180v2
