Cosmic rays and strings II

Thomas Dent

<jabberwocky><div class="vbmenu_control"><a href="jabberwocky:;" onClick="newWindow=window.open('','usenetCode','toolbar=no,location=no, scrollbars=yes,resizable=yes,status=no,width=650,height=400'); newWindow.document.write('<HTML><HEAD><TITLE>Usenet ASCII</TITLE></HEAD><BODY topmargin=0 leftmargin=0 BGCOLOR=#F1F1F1><table border=0 width=625><td bgcolor=midnightblue><font color=#F1F1F1>This Usenet message\'s original ASCII form: </font></td></tr><tr><td width=449><br><br><font face=courier><UL><PRE>alistair <alistair@goforit64.fsnet.co.uk> wrote\n\n> What do the string theories have to say about something like the GZK\n> paradox where ultra high energy cosmic ray protons reach the Earth when\n> they should have been absorbed by the cosmic microwave background?\n\nBirkel and Sarkar, hep-ph/9804285 "Extremely high energy cosmic rays\nfrom relic particle decays".\n\nCoriano\', Faraggi and Plumacher, hep-ph/0107053 "Stable Superstring\nRelics and Ultrahigh Energy Cosmic Rays".\n\nThe so-called \'cryptons\' from the superman- er, -symmetry-breaking\nhidden sector... bound states in a hidden sector decaying via\noperators of very high order. See also\n\nBenakli, Ellis and Nanopoulos, hep-ph/9803333 "We exhibit a specific\nstring model that predicts cryptons as hidden-sector bound states\nweighing \\$\\sim 10^{12}\\$ GeV".\n\nIt is well known, at least in Oxford and CERN, that string\nphenomenology can explain *everything*, even effects that are due to\ninaccurate energy calibration.\n\n=======\n[Moderator\'s note: my guess is that other relevant articles - related\nto AGASA, GKZ cutoff etc. - are\n\nhttp://arxiv.org/abs/astro-ph/0209422 and also\nhttp://arxiv.org/abs/hep-ph/0301001\nhttp://arxiv.org/abs/astro-ph/0109015\nhttp://arxiv.org/abs/astro-ph/0008102\n\nIt is not quite clear to me which one "string phenomenology" relevant\nfor the high energy cosmic rays Thomas describes. I started a new\nthread because Thomas\'s article is decoupled from the previous AGASA\ndiscussion. The original thread is at\n\nhttp://groups.google.com/groups?dq=&hl=en&lr=&threadm=33023f5e.0405111526.6a07f7d0-100000%40posting.google.com&prev=/groups%3Fhl%3Den%26lr%3D%26group%3Dsci.physics.strings\n\nBest wishes, LM]\n\n\n</UL></PRE></font></td></tr></table></BODY><HTML>');"> <IMG SRC=/images/buttons/ip.gif BORDER=0 ALIGN=CENTER ALT="View this Usenet post in original ASCII form">  View this Usenet post in original ASCII form </a></div><P></jabberwocky>alistair <alistair@goforit64.fsnet.co.uk> wrote

> What do the string theories have to say about something like the GZK
> paradox where ultra high energy cosmic ray protons reach the Earth when
> they should have been absorbed by the cosmic microwave background?

Birkel and Sarkar, http://www.arxiv.org/abs/hep-ph/9804285 "Extremely high energy cosmic rays
from relic particle decays".

Coriano', Faraggi and Plumacher, http://www.arxiv.org/abs/hep-ph/0107053 "Stable Superstring
Relics and Ultrahigh Energy Cosmic Rays".

The so-called 'cryptons' from the superman- er, -symmetry-breaking
hidden sector... bound states in a hidden sector decaying via
operators of very high order. See also

Benakli, Ellis and Nanopoulos, http://www.arxiv.org/abs/hep-ph/9803333 "We exhibit a specific
string model that predicts cryptons as hidden-sector bound states
weighing [itex]$\sim 10^{12}$[/itex] GeV".

It is well known, at least in Oxford and CERN, that string
phenomenology can explain *everything*, even effects that are due to
inaccurate energy calibration.

=======
[Moderator's note: my guess is that other relevant articles - related
to AGASA, GKZ cutoff etc. - are

http://arxiv.org/abs/http://www.arxi...tro-ph/0209422 and also
http://arxiv.org/abs/http://www.arxi...hep-ph/0301001
http://arxiv.org/abs/http://www.arxi...tro-ph/0109015
http://arxiv.org/abs/http://www.arxi...tro-ph/0008102

It is not quite clear to me which one "string phenomenology" relevant
for the high energy cosmic rays Thomas describes. I started a new
thread because Thomas's article is decoupled from the previous AGASA
discussion. The original thread is at

http://groups.google.com/groups?dq=&...hysics.strings

Best wishes, LM]

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