Toward distinguishing Dirac from Majorana neutrino mass with gravitational waves

被引:15
|
作者
King, Stephen F. [1 ]
Marfatia, Danny [2 ]
Rahat, Moinul Hossain [1 ,3 ,4 ]
机构
[1] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, England
[2] Univ Hawaii Manoa, Dept Phys & Astron, Honolulu, HI 96822 USA
[3] Univ Valencia, Inst Fis Corpuscular, Edificio Inst Invest,Calle Catedrat Jose Beltran 2, Paterna 46980, Spain
[4] CSIC, Edificio Inst Invest,Catedrat Jose Beltran 2, Paterna 46980, Spain
基金
欧盟地平线“2020”;
关键词
MODELS; EVOLUTION; MIXINGS; DECAY;
D O I
10.1103/PhysRevD.109.035014
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We propose a new method toward distinguishing the Dirac versus Majorana nature of neutrino masses from the spectrum of gravitational waves (GWs) associated with neutrino mass genesis. Motivated by the principle of generating small neutrino masses without tiny Yukawa couplings, we assume generic seesaw mechanisms for both Majorana and Dirac neutrino masses. For Majorana neutrinos, we further assume a spontaneously broken gauged U(1)B-L symmetry, independently of the type of Majorana seesaw mechanism, which gives a cosmic string induced GW signal flat over a wide range of frequencies. For Dirac neutrinos, we assume the spontaneous breaking of a Z2 symmetry, the minimal symmetry choice associated with all Dirac seesaw mechanisms, which is softly broken, generating a peaked GW spectrum from the annihilation of the resulting domain walls. In fact, the GW spectra for all types of Dirac seesaws with such a broken Z2 symmetry are identical, subject to a mild caveat. As an illustrative example, we study the simplest respective type-I seesaw mechanisms, and show that the striking difference in the shapes of the GW spectra can help differentiate between these Dirac and Majorana seesaws, complementing results of neutrinoless double beta decay experiments. We also discuss detailed implications of the recent NANOGrav data for Majorana and Dirac seesaw models.
引用
收藏
页数:13
相关论文
共 50 条
  • [1] Distinguishing Dirac from Majorana Heavy Neutrino at Future Lepton Colliders
    Cao, Qing-Hong
    Cheng, Kun
    Liu, Yandong
    Physical Review Letters, 134 (02):
  • [2] Distinguishing Dirac from Majorana Heavy Neutrino at Future Lepton Colliders
    Cao, Qing-Hong
    Cheng, Kun
    Liu, Yandong
    PHYSICAL REVIEW LETTERS, 2025, 134 (02)
  • [3] Dirac neutrino mass generation from a Majorana messenger
    Calle, Julian
    Restrepo, Diego
    Zapata, Oscar
    PHYSICAL REVIEW D, 2020, 101 (03)
  • [4] Guesswork for Dirac and Majorana neutrino mass matrices
    Królikowski, W
    ACTA PHYSICA POLONICA B, 2004, 35 (08): : 2095 - 2102
  • [5] DISTINGUISHING BETWEEN DIRAC AND MAJORANA NEUTRINOS IN NEUTRINO-ELECTRON SCATTERING
    DASS, GV
    PHYSICAL REVIEW D, 1985, 32 (05): : 1239 - 1240
  • [6] CONSEQUENCES OF MAJORANA AND DIRAC MASS MIXING FOR NEUTRINO OSCILLATIONS
    BARGER, V
    LANGACKER, P
    LEVEILLE, JP
    PAKVASA, S
    PHYSICAL REVIEW LETTERS, 1980, 45 (09) : 692 - 695
  • [7] On the possibilities of distinguishing Dirac from Majorana neutrinos
    Zralek, M
    ACTA PHYSICA POLONICA B, 1997, 28 (11): : 2225 - 2257
  • [8] Neutrino oscillations from Dirac and Majorana masses
    Ring, D
    PHYSICAL REVIEW D, 1997, 55 (09): : 5767 - 5771
  • [9] Distinguishing Dirac and Majorana neutrinos by their decays via Nambu-Goldstone bosons in the gravitational-anomaly model of neutrino masses
    Funcke, Lena
    Raffelt, Georg
    Vitagliano, Edoardo
    PHYSICAL REVIEW D, 2020, 101 (01)
  • [10] MAJORANA MASS TERM, DIRAC NEUTRINOS AND SELECTIVE NEUTRINO OSCILLATIONS
    LEUNG, CN
    ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1987, 35 (04): : 533 - 536