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We investigate whether flavor changing neutrino interactions (FCNIs) can be sufficiently large to provide a viable solution to the atmospheric neutrino problem. Effective operators induced by heavy boson exchange that allow for flavor…

High Energy Physics - Phenomenology · Physics 2009-10-31 Sven Bergmann , Yuval Grossman , Damien M. Pierce

The accurate prediction of the neutrino beam produced in muon decays and the absence of opposite helicity contamination for a particular neutrino flavor make a future neutrino factory the ideal place to look for the lepton flavor violating…

High Energy Physics - Phenomenology · Physics 2010-02-03 A. Bueno , M. Campanelli , M. Laveder , J. Rico , A. Rubbia

With only three flavors it is possible to account for various neutrino oscillation experiments. The masses and mixing angles for three neutrinos can be determined from the available experimental data on neutrino oscillation and from the…

High Energy Physics - Phenomenology · Physics 2009-10-31 Rathin Adhikari , Gordana Omanovic

We show that lepton number violating muon decays, \mu^+ -> e^+ + \nu_e-bar + \nu_i-bar (i=e, \mu or \tau), can consistently explain the neutrino anomaly reported by the LSND experiment. Two effective operators in the Standard Model are…

High Energy Physics - Phenomenology · Physics 2007-05-23 K. S. Babu , Sandip Pakvasa

The phenomenon of neutrino oscillations has been established as the leading mechanism behind neutrino flavor transitions, providing solid experimental evidence that neutrinos are massive and lepton flavors are mixed. Here we review…

High Energy Physics - Phenomenology · Physics 2013-03-21 Tommy Ohlsson

We have analyzed the results of reactor and accelerator neutrino oscillation experiments in the framework of a general model with mixing of three neutrino fields and a neutrino mass hierarchy that can accommodate the results of the solar…

High Energy Physics - Phenomenology · Physics 2009-10-28 S. M. Bilenky , A. Bottino , C. Giunti , C. W. Kim

The small neutrino mass observed in neutrino oscillations is nicely explained by the seesaw mechanism. Rich phenomenology is generally expected if the heavy neutrinos are not much heavier than the electroweak scale. A model with this…

High Energy Physics - Phenomenology · Physics 2008-11-26 Jian-Ping Bu , Yi Liao , Ji-Yuan Liu

We discuss the capabilities of a future neutrino factory based on intense neutrino beams from a muon storage ring to explore the non-standard neutrino matter interactions, which are assumed to be sub-leading effects in the standard mass…

High Energy Physics - Phenomenology · Physics 2014-11-17 A. M. Gago , M. M. Guzzo , H. Nunokawa , W. J. C. Teves , R. Zukanovich Funchal

We study the modification of the detected flavor content of ultra high-energy astrophysical neutrinos in the presence of non-standard interactions of neutrinos with the Earth matter. Unlike the case of new physics affecting the propagation…

High Energy Physics - Phenomenology · Physics 2017-02-28 M. C. Gonzalez-Garcia , Michele Maltoni , Ivan Martinez-Soler , Ningqiang Song

Non-Standard neutral current Interactions (NSIs) of neutrinos with matter can alter the pattern of neutrino oscillation due to the coherent forward scattering of neutrinos on the medium. This effect makes long-baseline neutrino experiments…

High Energy Physics - Phenomenology · Physics 2016-08-03 Yasaman Farzan , Ian M. Shoemaker

Since the discovery of neutrino oscillations it is known that lepton flavour is not conserved. Lepton flavour violating processes in the charged lepton sector have so far however eluded detection; as they are heavily suppressed in the…

High Energy Physics - Experiment · Physics 2013-02-11 Niklaus Berger

The observation of neutrino oscillation as well as the recent experimental result on lepton flavor universality (LFU) violation in $B$ meson decays are indications of new physics beyond the Standard Model. Many theoretical models, which are…

High Energy Physics - Phenomenology · Physics 2017-02-01 Soumya C. , R. Mohanta

Taking the supersymmetric inverse seesaw mechanism as the explanation for neutrino oscillation data, we investigate charged lepton flavor violation in radiative and 3-body lepton decays as well as in neutrinoless $\mu-e$ conversion in…

High Energy Physics - Phenomenology · Physics 2014-11-18 A. Abada , M. E. Krauss , W. Porod , F. Staub , A. Vicente , C. Weiland

With the strong experimental evidence for standard neutrino mass and mixings, there exists now a possibility of the lepton flavor violating process e\sup + mu \sup - \arrow W \sup + W \sup -, which would occur via t-channel neutrino…

High Energy Physics - Phenomenology · Physics 2007-05-23 Jai Kumar Singhal , Sardar Singh , A K Nagawat

The simplest explanation for the atmospheric neutrino anomaly is the transition of muon neutrinos and antineutrinos into states of different flavor. Data from the reactor experiment Chooz, and the measurement of the energy and angle…

High Energy Physics - Phenomenology · Physics 2014-11-17 Paolo Lipari , Maurizio Lusignoli

We review the status of the solutions to neutrino anomalies by flavor-changing as well as flavor-diagonal neutrino interactions. While it is difficult to explain the atmospheric neutrino data the solar neutrino data can be well accounted…

High Energy Physics - Phenomenology · Physics 2009-10-31 Hiroshi Nunokawa

We show there is a non-null probability to produce neutrinos of the ``wrong'' type in general decays, within the SM augmented by the known three massive neutrinos and nontrivial mixing. Such effect is equivalent to an intrinsic flavor…

High Energy Physics - Phenomenology · Physics 2010-06-30 C. C. Nishi

If one assumes solar and LSND neutrino oscillations to explain the corresponding data, then the atmospheric neutrino deficit cannot be accommodated within the Standard Model with three light flavors, unless one ignores the data's…

High Energy Physics - Phenomenology · Physics 2016-08-25 Ernest Ma , Probir Roy

The neutrino experiment results suggest that the neutrinos have finite masses and the lepton-flavor symmetries are violating in nature. In the supersymmetric models, the charged lepton-flavor violating processes, such as mu -> e gamma and…

High Energy Physics - Phenomenology · Physics 2016-11-23 J. Hisano , D. Nomura

Neutrino oscillation experiments suggest existence of new flavor-violating interactions in high energy scale. It may be possible to probe them by the flavor- and CP-violating processes in leptons and hadrons in the supersymmetric (SUSY)…

High Energy Physics - Phenomenology · Physics 2009-11-10 Junji Hisano
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