Physicists Discover 'Doubly Strange' Particle

icho100
Messages
6
Reaction score
0
DZero experiment at the U.S. Department of Energy's Fermi National Accelerator Laboratory have discovered a new particle made of three quarks, the Omega-sub-b (Ωb).

Read more about the 'Doubly Strange' Particle.
 
Physics news on Phys.org
<arXiv:0810.2050>
 
This is not my field, but I'm surprised that they haven't seen pretty much all combinations of the known quarks (with the exception of the top, which was first observed relatively recently). What has prevented this ... energy available in the collider, or some other technical issues?

p.s.
Welcome to PF, icho100.
 
Energy, background, rapid decay (too broad a width), time, money, other things to look for,
and other technical issues.
 

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

B Are real theories undiscoverable from effective field theories?
Replies
4
Views
2K
I New Naming Rules for Exotic Hadrons at the LHC: LHCb Collaboration Paper (2022)
Replies
7
Views
2K
I What would a hypothetical quark-quark collision yield?
Replies
4
Views
3K
What Is the Newly Discovered Zc(3900) Particle?
Replies
2
Views
3K
I Experiment finds gluon mass in the proton (?)
Replies
12
Views
3K
I Glueballs Observed For The First Time
Replies
10
Views
3K
I Is the Melting Quarks Experiment a Scam?
Replies
5
Views
2K
I LHCb Discovers Two New Particles
Replies
9
Views
4K
I How Does Beta Decay Relate to the Role of W Bosons in Weak Nuclear Force?
Replies
4
Views
4K
B What is the significance of the newly discovered isotope, Mendelevium-244?
Replies
0
Views
1K

Hot Threads

Recent Insights

Back
Top