SELEX RICH performance and physics results Page: 1 of 5
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FERMILAB-Conf-02/181-E August 2002
SELEX RICH Performance and Physics
J. Engelfried a,d,2, I.S. Filimonov c,3, J. Kilmer a,
A.P. Kozhevnikov b, V.P. Kubarovsky b, V.V. Molchanov b,
A.V Nemitkin C, E. Ramberg a, V.I. Rud c, L. Stutte a
aFermi National Accelerator Laboratory, Batavia, IL, USA
bInstitute for High Energy Physics, Protvino, Russia
cMoscow State University, Moscow, Russia
dlnstituto de Fisica, Universidad Aut6noma de San Luis Potosi, Mexico
SELEX took data in the 1996/7 Fixed Target Run at Fermilab. The excellent perfor-
mance parameters of the SELEX RICH Detector had direct influence on the quality
of the obtained physics results.
Key words: RICH detector, Phototubes,
PA CS: 29.40.Ka, 85.60.Ha, 14.20.Lq
The Fermilab experiment E781
(SELEX): A Segmented Large xF
Baryon Spectrometer [1,2], which
took data in the 1996/97 fixed tar-
get run at Fermilab, is designed to
perform high statistics studies of
1 Contributed talk at the Fourth Work-
shop on RICH Detectors, June 5-10,
2002, Pylos, Greece. To be published in
2 Corresponding author; email:
Preprint submitted to Elsevier Science
production mechanisms and decay
physics of charmed and charmed-
strange baryons such as E, C
and A.. The physics goals of the ex-
periment require good charged par-
ticle identification to look for the
different baryon decay modes. One
must be able to separate -r, K and p
over a wide momentum range when
looking for charmed baryon decays
like A+ - pK--7r+.
A RICH detector with a 2848 pho-
totube photocathode array has been
constructed [3,4] to do this. The
detector begins about 16 m down-
14 August 2002
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al., Jurgen Engelfried et. SELEX RICH performance and physics results, article, August 28, 2002; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc734669/m1/1/: accessed November 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.