Re: Could the 'missing dimensions' be quarks?

Posted by lanecove on September 14, 2003 at 09:42:42:

In Reply to: Re: Could the 'missing dimensions' be quarks? posted by rtharbaugh on September 13, 2003 at 17:47:51:

Richard,

... For one thing, photons we can create have much longer wavelengths than the confinement volume of quarks, .

That may be so, but plenty of photons with energies in excess of 1 TeV has been observed - they are created in supernovae shock fronts, AGN/blazar jets, and (presumably) quasars. Such photons have wavelengths ~10^-3 fermi and smaller, which I think makes them much smaller than protons and neutrons.

If I'm not mistaken, what happens when such an energetic photon encounters something like a proton is lots of pair production.

Maybe DickT would know if the LHC is likely to produce TeV photons; otherwise, controlled experiments will have to wait for a long time (or someone with really clever ideas about using the Crab Nebula as a high-energy photon source!).

FYI, some folk think that GRBs (gamma ray bursts) may generate significant quantities of PeV (= 1,000 TeV) photons.

Regards
lanecove

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Follow Ups: (Reload page to see most recent)

• Re: Could the 'missing dimensions' be quarks? -- DickT 9/14/03 (22)
  • Re: Could the 'missing dimensions' be quarks? -- rtharbaugh 9/14/03 (21)
    • Re: Could the 'missing dimensions' be quarks? -- DickT 9/15/03 (20)
      • Re: Could the 'missing dimensions' be quarks? -- pelastration 9/15/03 (0)
      • Quark to Quark Measure -- sol 9/15/03 (18)
        • Re: Quark to Quark Measure -- DickT 9/15/03 (2)
          • Re: Quark to Quark Measure -- sol 9/15/03 (1)
            • Re: Quark to Quark Measure -- DickT 9/15/03 (0)
        • Dimension is Relative to Energy -- sol 9/15/03 (14)
          • Re: Dimension is Relative to Energy -- DickT 9/15/03 (13)
            • Dimension is Relative to Metric Points:) -- sol 9/15/03 (12)
              • Re: Dimension is Relative to Metric Points:) -- DickT 9/15/03 (9)
                • solar wind, heliosphere, plasmas, etc -- lanecove 9/16/03 (8)
                  • Re: solar wind, heliosphere, plasmas, etc -- rtharbaugh 9/16/03 (4)
                    • X-rays from the dark side of the Moon -- lanecove 9/17/03 (2)
                      • X-rays from the dark side of consciousness -- rtharbaugh 9/17/03 (1)
                        • Re: X-rays from the dark side of consciousness -- lanecove 9/17/03 (0)
                    • here is the link -- rtharbaugh 9/16/03 (0)
                  • Discrete versus Continuity? -- sol 9/16/03 (2)
                    • Re: Discrete versus Continuity? -- lanecove 9/16/03 (0)
                    • Geometry is Better then Topology? -- sol 9/16/03 (0)
              • Gmn = - 8pG/c2Tmn(From Gravity to supergravity) -- sol 9/15/03 (1)
                • Re: Gmn = - 8pG/c2Tmn(From Gravity to supergravity) -- DickT 9/15/03 (0)

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