Why are neutrinos always lefthanded?

  • Thread starter Thread starter Sergio.Leoni
  • Start date Start date
  • Tags Tags
    Neutrinos
Sergio.Leoni
Messages
1
Reaction score
0
Posted in quantum physics, maybe wrong session.

Neutrinos are massive particles, so that i would expect that their helicity depends on coordinate system. Why are they lefthanded at all times?
I heard that in decays righthanded neutrinos are suppressed by a factor (1-beta)/2, but i don't know why.
 
Physics news on Phys.org
Neutrinos can have either helicity. The left-handedness refers to their chirality.
 
The W boson does not attach to the right neutrinos, only to the left ones.
 

Thread 'Toponium Discovered'

Toponium is a hadron which is the bound state of a valance top quark and a valance antitop quark. Oversimplified presentations often state that top quarks don't form hadrons, because they decay to bottom quarks extremely rapidly after they are created, leaving no time to form a hadron. And, the vast majority of the time, this is true. But, the lifetime of a top quark is only an average lifetime. Sometimes it decays faster and sometimes it decays slower. In the highly improbable case that...
View full post »

Thread 'Dirac-Delta from Normalization of Continuous Eigenfunctions'

I'm following this paper by Kitaev on SL(2,R) representations and I'm having a problem in the normalization of the continuous eigenfunctions (eqs. (67)-(70)), which satisfy \langle f_s | f_{s'} \rangle = \int_{0}^{1} \frac{2}{(1-u)^2} f_s(u)^* f_{s'}(u) \, du. \tag{67} The singular contribution of the integral arises at the endpoint u=1 of the integral, and in the limit u \to 1, the function f_s(u) takes on the form f_s(u) \approx a_s (1-u)^{1/2 + i s} + a_s^* (1-u)^{1/2 - i s}. \tag{70}...
View full post »

Similar threads

A Beta Decay, why did they have to resort to Neutrinos?
Replies
32
Views
4K
I How Does Beta Decay Relate to the Role of W Bosons in Weak Nuclear Force?
Replies
4
Views
4K
Puzzling Lefthanded Neutrinos in Beta-Decay
Replies
1
Views
2K
Can You Measure the Spin of a Neutrino Along the X or Y Axes?
Replies
13
Views
2K
A Problem with neutrino oscillations
Replies
6
Views
2K
I How do the collider experiments measure the mass of the W boson?
Replies
4
Views
4K
I Understanding crossing symmetry: inverse beta decay
Replies
4
Views
2K
B Are real theories undiscoverable from effective field theories?
Replies
4
Views
2K
A KamLAND-Zen Results: Search for Majorana Neutrinos in Inverted Mass Hierarchy
Replies
5
Views
2K
If neutrinos are their own antimatter
Replies
15
Views
3K

Hot Threads

Recent Insights

Back
Top