CP violation from a combined Beta Beam and Electron Capture neutrino experiment

Author(s):  
Jose Bernabeu ◽  
Catalina Espinoza ◽  
Christopher Orme ◽  
Sergio Palomares-Ruiz ◽  
Silvia Pascoli ◽  
...  
2009 ◽  
Vol 2009 (06) ◽  
pp. 040-040 ◽  
Author(s):  
José Bernabéu ◽  
Catalina Espinoza ◽  
Christopher Orme ◽  
Sergio Palomares-Ruiz ◽  
Silvia Pascoli

Author(s):  
P. Coloma ◽  
A. Donini ◽  
P. Migliozzi ◽  
L. Scotto Lavina ◽  
F. Terranova

Universe ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 21
Author(s):  
Dean Karlen ◽  
on behalf of the TtwoK Collaboration

The T2K long baseline neutrino oscillation experiment measures muon neutrino disappearance and electron neutrino appearance in accelerator-produced neutrino and anti-neutrino beams. This presentation reports on the analysis of our data from an exposure of 2 . 6 × 10 21 protons on target. Results for oscillation parameters, including the CP violation parameter and neutrino mass ordering, are shown.


2014 ◽  
Vol 2014 (5) ◽  
Author(s):  
S.K. Agarwalla ◽  
◽  
L. Agostino ◽  
M. Aittola ◽  
A. Alekou ◽  
...  

2008 ◽  
Vol 2008 (07) ◽  
pp. 115-115 ◽  
Author(s):  
Davide Meloni ◽  
Olga Mena ◽  
Christopher Orme ◽  
Sergio Palomares-Ruiz ◽  
Silvia Pascoli

Author(s):  
Susumu Igarashi ◽  
Kenichirou Satou ◽  
Chihiro Ohmori ◽  
Yoshitugu Arakaki ◽  
Masashi Furusawa ◽  
...  

Abstract The J-PARC Main Ring (MR) has supplied the high-intensity proton beam for the T2K long-baseline neutrino experiment since 2010. The present beam power is 510 kW and the total number of protons on the target reaches 3.64 × 1021. To observe CP violation in the lepton sector with high accuracy, more protons need to be delivered to the T2K target. The project to upgrade the beam power to 1.3 MW started as a mid-term plan of the MR. In parallel to preparing a full technical design report, the technical designs of hardware upgrades using new technologies and all accelerator components that are necessary to deliver the 1.3-MW beam power are summarized and consolidated in this short paper. Further, this paper includes beam dynamics studies and simulation results for handling 3.3 × 1014 protons per pulse (ppp) without significant beam loss in the ring and transport lines. The Hyper-Kamiokande (HK) project has recently been approved, and construction has started; the MR upgrade and HK project will work together efficiently to study the CP violation.


2021 ◽  
Vol 2021 (11) ◽  
Author(s):  
Kåre Fridell ◽  
Julia Harz ◽  
Chandan Hati

Abstract In the near future, the Deep Underground Neutrino Experiment and the European Spallation Source aim to reach unprecedented sensitivity in the search for neutron-antineutron (n-$$ \overline{n} $$ n ¯ ) oscillations, whose observation would directly imply |∆B| = 2 violation and hence might hint towards a close link to the mechanism behind the observed baryon asymmetry of the Universe. In this work, we explore the consequences of such a discovery for baryogenesis first within a model-independent effective field theory approach. We then refine our analysis by including a source of CP violation and different hierarchies between the scales of new physics using a simplified model. We analyse the implication for baryogenesis in different scenarios and confront our results with complementary experimental constraints from dinucleon decay, LHC, and meson oscillations. We find that for a small mass hierarchy between the new degrees of freedom, an observable rate for n-$$ \overline{n} $$ n ¯ oscillation would imply that the washout processes are too strong to generate any sizeable baryon asymmetry, even if the CP violation is maximal. On the other hand, for a large hierarchy between the new degrees of freedom, our analysis shows that successful baryogenesis can occur over a large part of the parameter space, opening the window to be probed by current and future colliders and upcoming n-$$ \overline{n} $$ n ¯ oscillation searches.


2005 ◽  
Vol 629 (1) ◽  
pp. 33-40 ◽  
Author(s):  
Sanjib Kumar Agarwalla ◽  
Amitava Raychaudhuri ◽  
Abhijit Samanta

Universe ◽  
2021 ◽  
Vol 7 (7) ◽  
pp. 240
Author(s):  
Alessio Giarnetti ◽  
Davide Meloni

We check the capability of the DUNE neutrino experiment to detect new sources of leptonic CP violation beside the single phase expected in the Standard Model. We illustrate our strategy based on the measurement of CP asymmetries in the case that new physics will show up as nonstandard neutrino interactions and sterile neutrino states and show that the most promising one, once the experimental errors are taken into account in both scenarios, is the one related to the νμ→νe transition.


2015 ◽  
Vol 30 (07) ◽  
pp. 1550017 ◽  
Author(s):  
Debajyoti Dutta ◽  
Kalpana Bora

In this work, we have explored the possibilities of improving CP violation (CPV) discovery potential of newly planned Long-Baseline Neutrino Experiment (LBNE), USA, by combining with data from reactors. The third mixing angle θ13 is now very precisely measured and this precise measurement of θ13 helps in the measurement of CPV. Here, CPV is studied with and without data from reactors. The impact of placing a neutrino data (ND) is also studied. It is found that CPV discovery potential of LBNE with ND increases when combined with data from reactors. With a far detector of 35 kt, it is possible to obtain 5σ sensitivity of CPV when run for 5 years in ν and 5 years in [Formula: see text] mode. When normal hierarchy is assumed, CPV sensitivity is maximum. CPV discovery is possible by combining 5 years neutrino data from LBNE with 3 years anti-neutrino data from reactors. This study reveals that CPV can also be discovered at 5σ cl in inverted mass hierarchy (IH) mode when appearance measurement of LBNE is combined with reactors.


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