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13 th Haengdang Symposium Nov. 30, 2007. Electromagnetic Production of Neutrinos in Extreme Conditions massive neutrinos with magnetic moments in strong magnetic field and at high energy hadronic collision. Hyun Kyu Lee Hanyang University.

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Hyun kyu lee hanyang university

13th Haengdang Symposium Nov. 30, 2007

Electromagnetic Production of Neutrinos in Extreme Conditions massive neutrinos with magnetic moments in strong magnetic field and at high energy hadronic collision

Hyun Kyu Lee

Hanyang University

HKL & Y. Yoon , JHEP 0603,78(2006) ; 0703, 086(2007);

Mod. Phys. Lett. A 22, 2081(2007)

HKL, Y. Goh, W. Paeng, Y. Yoon, in preperation(2007)


I electromagnetic vacuum instability
I. Electromagnetic Vacuum Instability

1. QED e+ e- pair creation Schwinger 1951

Electric effect

E^2 –B^2 > 0


2. Pair Creation of Neutral Fermion with Magnetic Moment

  • Electromagnetic interaction of neutral fermion with magnetic moment can be described effectively by Dirac-Pauli Lagrangian:

<Paui interaction>




Pair creation as magnetic effect b 2 e 2 0
Pair Creation as Magnetic EffectB^2-E^2 > 0

HKL & Y. Yoon JHEP 03,78(2006) HKL & Y. Yoon JHEP 03, 086(2007)


<Effective potential for homogeneous B-field>


Pair creation as magnetic effect b 2 e 2 01
Pair Creation as Magnetic EffectB^2-E^2 > 0

HKL & Y. Yoon JHEP 03,78(2006) HKL & Y. Yoon JHEP 03, 086(2007)


3 pair creation of majorana neutrino with transition magnetic moment
3. Pair creation of Majorana neutrino with transition magnetic moment

Neutrino:

1. electrically neutral(beta decay)

2. massive(neutrino oscillation)

3. flavor mixing (neutrino oscillation)

4. Dirac or Majorana ?

5. magnetic moment ?

6. physics beyond standard model


Dirac pauli lagrangian for majorana neutrinos with transition magnetic moment
Dirac-Pauli Lagrangian for magnetic momentMajorana neutrinos with transition magnetic moment

  • Mass eigenstates,

  • Majorana

  • Transtion magnetic moment



Summary i
Summary(I) magnetic moment

  • Theoretical and experimental bounds on neutrino magnetic moment

  • Critical magnetic field

  • Slow process

  • Continuous source of neutrinos

  • Production in mass eigenstate

  • Model for neutrino magnetic moment

  • Effective lagrangian for strong magnetic field;


Ii neutrino production in high energy hadron collision
II. Neutrino Production in High Energy Hadron Collision magnetic moment

  • High energy hadron collision

  • Neutrino pair creation in standard model





Possible Observabilities with Neutrino Magnetic Moment magnetic moment

-Neutrino production in Ultra-Strong Magnetic Field, B > 10^{15}G

(Soft Gamma Repeaters,

Anomalous X-Ray Pulsars, Neutron stars,

Black holes, …)

-Enhancement of neutrino production in high energy hadronic collision (LHC, UHECR)

(Angular distribution, Back-to-back correlation, …)


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