Details

Autor(en) / Beteiligte

• Ruan, L
• Lin, G
• Xu, Z
• Asselta, K
• Chen, H F
• Christie, W
• Crawford, H J
• Engelage, J
• Eppley, G
• Hallman, T J
• Li, C
• Liu, J
• Llope, W J
• Majka, R
• Nussbaum, T
• Scheblein, J
• Shao, M
• Soja, R
• Sun, Y
• Tang, Z
• Wang, X
• Wang, Y

Titel

Perspectives of a mid-rapidity dimuon program at the RHIC: a novel and compact muon telescope detector

Ist Teil von

• Journal of physics. G, Nuclear and particle physics, 2009-09, Vol.36 (9), p.095001-095001 (15)

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2009

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We propose a large-area, cost-effective muon telescope detector (MTD) at mid-rapidity for the solenoidal tracker at the RHIC (STAR) and for the next generation of detectors at a possible electron-ion collider. We utilize large multi-gap resistive plate chambers with long readout strips (long-MRPC) in the detector design. The results from cosmic ray and beam tests show that the intrinsic timing and spatial resolution for a long-MRPC are 60-70 ps and ~1 cm, respectively. The performance of the prototype muon telescope detector at STAR indicates that muon identification at a transverse momentum of a few GeV/c can be achieved by combining information from 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 the RHIC. Simulations of the muon efficiency, the signal-to-background ratio of J/psi, the separation of 1S from 2S+3S states and the electron-muon correlation from charm pair production in the RHIC environment are presented.