000065407 001__ 65407
000065407 005__ 20140506135328.0
000065407 035__ $$9arXiv$$aoai:arXiv.org:1404.4357
000065407 035__ $$9INSPIRETeX$$aAgafonova:2014khd
000065407 037__ $$9arXiv$$aarXiv:1404.4357$$chep-ex
000065407 100__ $$aAgafonova, N.$$uMoscow, INR
000065407 245__ $$9arXiv$$aProcedure for short-lived particle detection in the OPERA experiment and its application to charm decays
000065407 246__ $$9arXiv$$aProcedure for short-lived particle detection in the OPERA experiment and its application to charm decays
000065407 269__ $$c2014-04-16
000065407 500__ $$a*Temporary entry*
000065407 520__ $$9arXiv$$aThe OPERA experiment, designed to perform the first observation of $\nu_\mu \rightarrow \nu_\tau$ oscillations in appearance mode through the detection of the $\tau$ leptons produced in $\nu_\tau$ charged current interactions, has collected data from 2008 to 2012. In the present paper, the procedure developed to detect $\tau$ particle decays, occurring over distances of the order of 1 mm from the neutrino interaction point, is described in detail. The results of its application to the search for charmed hadrons are then presented as a validation of the methods for $\nu_\tau$ appearance detection.
000065407 540__ $$barXiv$$uhttp://arxiv.org/licenses/nonexclusive-distrib/1.0/
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000065407 65017 $$2arXiv$$ahep-ex
000065407 65017 $$2INSPIRE$$aExperiment-HEP
000065407 693__ $$eOPERA
000065407 695__ $$2INSPIRE$$a* Automatic Keywords *
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000065407 695__ $$2INSPIRE$$acharm: decay
000065407 695__ $$2INSPIRE$$avertex: primary
000065407 695__ $$2INSPIRE$$aOPERA
000065407 695__ $$2INSPIRE$$acharged current
000065407 695__ $$2INSPIRE$$aoscillation
000065407 695__ $$2INSPIRE$$alepton
000065407 695__ $$2INSPIRE$$ahadron
000065407 700__ $$aAnokhina, A.$$uMoscow State U.
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000065407 700__ $$aKamiscioglu, M.$$uMiddle East Tech. U., Ankara
000065407 700__ $$aKawada, J.$$uBern U.
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000065407 710__ $$gOPERA Collaboration
000065407 8564_ $$uhttp://inspirehep.net/record/1291039/files/DZero_v1.png$$y00002 Sketch of a reconstructed $\nu_\mu$ CC interaction with a candidate charmed hadron observed in the final state.
000065407 8564_ $$uhttp://inspirehep.net/record/1291039/files/Evis_all_errorbar_zeroentry.png$$y00007 Visible energy distribution for observed $\nu_\mu$ CC interactions with candidate charm decays and MC expectations.
000065407 8564_ $$uhttp://inspirehep.net/record/1291039/files/dl_charm_zeroentry.png$$y00003 Shape comparison between observed $\nu_\mu$ CC interactions with candidate charm decays and MC expectations. Left: distribution of the decay length of the candidate charmed particles. Right: distribution of the angle between the candidate charmed particle and the primary muon in the $\nu$ transverse plane. The expected background contribution is also shown (stacked histogram).
000065407 8564_ $$uhttp://inspirehep.net/record/1291039/files/ip.png$$y00000 Left: Impact parameter distribution after the vertex film analysis for a sample of located $\nu_\mu$ CC interactions, compared to Monte Carlo expectations. Right: Track impact parameter as a function of the longitudinal distance from the neutrino interaction vertex (2008-2009 data). The red bullets show the average value for each bin. The dotted red line represents the cut applied to select possible short-decay daughter tracks.
000065407 8564_ $$uhttp://inspirehep.net/record/1291039/files/ip_charm_zeroentry.png$$y00005 Shape comparison between observed $\nu_\mu$ CC interactions with candidate charm decays and MC expectations. Left: distribution of the impact parameters of the candidate charm  daughter particles with respect to the neutrino interaction vertex. Right: distribution of muon momentum. The expected background contribution is also shown (stacked  histogram).
000065407 8564_ $$uhttp://inspirehep.net/record/1291039/files/ip_dz.png$$y00001 Left: Impact parameter distribution after the vertex film analysis for a sample of located $\nu_\mu$ CC interactions, compared to Monte Carlo expectations. Right: Track impact parameter as a function of the longitudinal distance from the neutrino interaction vertex (2008-2009 data). The red bullets show the average value for each bin. The dotted red line represents the cut applied to select possible short-decay daughter tracks.
000065407 8564_ $$uhttp://inspirehep.net/record/1291039/files/phi_charm.png$$y00004 Shape comparison between observed $\nu_\mu$ CC interactions with candidate charm decays and MC expectations. Left: distribution of the decay length of the candidate charmed particles. Right: distribution of the angle between the candidate charmed particle and the primary muon in the $\nu$ transverse plane. The expected background contribution is also shown (stacked histogram).
000065407 8564_ $$uhttp://inspirehep.net/record/1291039/files/pmu_charm_zeroentry2.png$$y00006 Shape comparison between observed $\nu_\mu$ CC interactions with candidate charm decays and MC expectations. Left: distribution of the impact parameters of the candidate charm  daughter particles with respect to the neutrino interaction vertex. Right: distribution of muon momentum. The expected background contribution is also shown (stacked  histogram).
000065407 8564_ $$uhttp://inspirehep.net/record/1291039/files/arXiv:1404.4357.pdf
000065407 909CO $$ooai:inspirehep.net:1291039$$pINSPIRE:HEP
000065407 980__ $$aCORE
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000065407 980__ $$aHEP
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000065407 999C6 $$a0-0-1-1-0-0-0$$t2014-04-17 07:45:47$$vInvenio/1.1.2.719-da082b refextract/1.5.43$$vcontent.pdf;1