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25 April 2024 |
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Perspectives of a Midrapidity Dimuon Program at RHIC: A Novel and Compact Muon Telescope Detector | | L. Ruan
; G. Lin
; Z. Xu
; K. Asselta
; H.F. Chen
; W. Christie
; H.J. Crawford
; J. Engelage
; G. Eppley
; C. Li
; J. Liu
; W.J. Llope
; R. Majka
; T. Nussbaum
; J. Scheblein
; M. Shao
; R. Soja
; Y. Sun
; Z. Tang
; X. Wang
; Y. Wang
; | | Date: |
24 Apr 2009 | | Abstract: | We propose a large-area, cost-effective Muon Telescope Detector (MTD) for the
Solenoidal Tracker at RHIC (STAR) at mid-rapidity and for the next generation
of detectors at a possible electron-ion collider. We utilize Multi-gap
Resistive Plate Chambers with large modules and long readout strips (Long-MRPC)
in the detector design. The results from cosmic ray and beam tests show the
intrinsic timing and spatial resolution for a Long-MRPC are 60-70 ps and
$sim1$ cm, respectively. The prototype performance of such a novel muon
telescope detector at STAR indicates that muon identification at the transverse
momentum of a few GeV/$c$ can be achieved through the combined information of
track matching with the MTD, ionization energy loss in the Time Projection
Chamber, and time-of-flight measurements. A primary muon over secondary muon
ratio of better than 1/3 can be achieved. This provides a promising device for
future quarkonium programs and primordial dilepton measurements at RHIC.
Simulations of the muon efficiency, the signal-to-background ratio of $J/psi$,
the separation of $Upsilon$ 1S from 2S+3S states, and the electron-muon
correlation from charm pair production in the RHIC environment are presented. | | Source: | arXiv, 0904.3774 | | Services: | Forum | Review | PDF | Favorites | |
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