Physicists Discover 'Doubly Strange' Particle

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Discussion Overview

The discussion centers around the discovery of a new particle, the Omega-sub-b (Ωb), made of three quarks, referred to as a 'Doubly Strange' Particle. Participants explore the implications of this discovery and the challenges associated with observing various combinations of known quarks, particularly in the context of collider experiments.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • Some participants highlight the discovery of the Omega-sub-b (Ωb) particle by the DZero experiment at Fermilab.
  • One participant expresses surprise that most combinations of known quarks have not been observed, questioning the reasons behind this, including energy limitations and technical issues.
  • Another participant lists potential factors that may have hindered the observation of various quark combinations, such as energy constraints, background interference, rapid decay rates, and resource allocation.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the specific reasons for the limited observation of quark combinations, with multiple viewpoints and factors being proposed.

Contextual Notes

Limitations include the dependence on collider energy levels, the nature of particle decay, and the prioritization of research focus, which remain unresolved in the discussion.

icho100
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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.
 

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