• Published Papers
  • Open Access
  • Neutrino Properties Probed by Lepton Number Violating Processes
  • DOI: 10.4236/ojm.2013.33B002   PP.5 - 9, Pub. Date: November 4 , 2013
  • Author(s)
  • Sabin Stoica
  • ABSTRACT
  • Study of neutrino properties is nowadays one of the most active domains of research in physics. On the one hand, fundamental properties of the neutrinos like their absolute mass, their character (are they Dirac or Majorana particles?) and the number of neutrino flavors, are still unknown. On the other hand, the knowledge of these properties are of great importance since the neutrinos are very abundant in nature and play a key role in nuclear and particle physics, astrophysics and cosmology. In addition, the results of the neutrino oscillation experiments have convincingly showed that neutrinos have mass and mix, in contradiction to the initial assumptions of the Standard Model. In this context there is an increased interest in the study of the Lepton Number Violating (LNV) processes, since they are capable to decide on the above mentioned neutrino properties. Since recently, the neutrinoless double beta (0nββ) decay was considered the only process able to distinguish between Dirac or Majorana neutrinos and to give a hint on the absolute mass of the electron neutrino. At present, the increased luminosity of the LHC experiments at CERN makes it feasable the search for LNV processes at LHC as well. Besides the neutrino character, these studies can also shed light on the existence of other types of neutrinos (the sterile neutrinos), than the three known ones. In this paper, I make a brief review on our present knowledge about the neutrino properties and on the way they can be probed by LNV processes at low- and high-energies. Particularly, I refer to the 0nββ decay process and to the first attempts of searching of LNV processes in hadron collider experiments, particularly in LHC experiments at CERN-Geneva.

  • KEYWORDS
  • Neutrinos; Neutrino Oscillations; Double Beta Decay; Neutrino Mass; Lepton Number Violation
  • References
  • [1] Y. Ashie et al. (SK collaboration), “Measurement of Atmospheric Neutrino Oscillation Parameters by Super-Kamiokande I,” Physical Review D, Vol. 71, No. 11, 2005. doi:10.1103/PhysRevD.71.112005

    [2] T. Araki et al., “Measurement of Neutrino Oscillation with KamLAND: Evidence of Spectral Distortion,” Physical Review Letters, Vol. 94, No. 8, 2005, 081801.doi:10.1103/PhysRevLett.94.081801

    [3] M. H. Ahn et al., “Measurement of Neutrino Oscillation by the K2K Experiment,” Physical Review D, Vol. 74, No. 7, 072003, 2006. doi:10.1103/PhysRevD.74.072003

    [4] P. Adamson et al., (MINOS collaboration), “Measurement of the Neutrino Mass Splitting and Flavor Mixing by Minos,” Physical Review Letters, Vol. 106, 181801, 2011. doi:10.1103/PhysRevLett.106.181801

    [5] Daya Bay Collaboration, Physical Review Letters, “Observation of Electron-Antineutrino Disappearance at Daya Bay,” Vol. 108, 171803, 2012. doi:10.1103/PhysRevLett.108.171803

    [6] J. Ahn et al., (RENO collaboration), “Observation of Reactor Electron Antineutrinos Disappearance in the RENO Experiment,” Physical Review Letters, Vol. 108, 191802, 2012. doi:10.1103/PhysRevLett.108.191802

    [7] Y. Abe et al., (Double Chooz collaboration), “Indication of Reactor ν e Disappearance in the Double Chooz Experimen,” Physical Review Letters, Vol. 108, 131801, 2012. doi:10.1103/PhysRevLett.108.131801

    [8] K. Abe et al., (T2K Collaboration), Physical Review D, Vol. 85, No. 3, 031103 2012. doi:10.1103/PhysRevD.85.031103

    [9] J. D. Vergados, H. Ejiri and F. Simkovic, arXiv: 1205.0649.

    [10] A. Faessler, arXiv:1203. 3648.

    [11] Werner Rodejohann, International Journal of Modern Physics E, Vol. 20, No. 09, 2011, 1833. doi:10.1142/S0218301311020186

    [12] M. Horoi and S. Stoica. Physical Review C, Vol. 81, 024321, 2010; A. Neascu, S. Stoica and M. Horoi, Physical Review C, Vol. 86, 067304, 2012.

    [13] A. Atre, T. Han, S. Pascoli and B. Zhang, JHEP, Vol. 05, 030 (2009).

    [14] ATLAS collaboration, JHEP, Vol. 10, 107 (2011).

    [15] CMS collaboration, JHEP, Vol. 06, 077 (2011).

    [16] LHCb Collaboration, “Search for Lepton Number Violating Decays B+→π-μ+μ+ and B+→K-μ+μ+,” Physical Review Letters, Vol. 108, 101601, 2012. doi:10.1103/PhysRevLett.108.101601

    [17] LHCb collaboration, Phys. Rev.85,112004 (2012).

    [18] LHCb collaboration: J.Harrison, Nucl. Phys. B, Proceedings Supplement, 2012; LHCb collaboration: P. Seyfert, arXiv: 1209; 4939v1 [hep-ex] and FPCP 2012, Hefei, China.

    [19] G. Lopez-Castro, N. Quinteros, arXiv: 1212.0037 [hep- ph].


Registration
  • Countdown
  • 0 days
Facebook   Twitter   Linkedin   Skype   Sina
Important Dates
Conference:
August 26-28, 2014
Paper or Abstract Submission Due:
July 9, 2014
Early Bird Registration due for Accepted Paper or Abstract: 10 days after acceptance notification
Early Bird Registration due for Audience:
Contact Us
Tel : +86 156 2908 5792
Sponsors

Past Conference: MANPP 2013
Past Proceedings: MANPP 2013