Muon identification in the Belle experiment at KEKB

被引：135

作者：

Abashian, A

Abe, K

Behara, PK

Handa, F

Iijima, T

Inoue, Y

Miyake, H

Nagamine, T

Nakano, E

Narita, S

Piilonen, L

Schrenk, S

Teramoto, Y

Trabelsi, K

Wang, JG

Yamaga, M

Yamaguchi, A

Yusa, Y

机构：

[1] Osaka City Univ, Fac Sci, Inst Cosm Ray Res, Osaka 5588585, Japan

[2] Virginia Polytech Inst & State Univ, Dept Phys, Blacksburg, VA 24061 USA

[3] KEK, High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan

[4] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[5] Utkal Univ, Bhubaneswar 751004, Orissa, India

[6] Osaka Univ, Dept Phys, Osaka 5600043, Japan

[7] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA

[8] Univ Hawaii, Dept Phys & Astron, Honolulu, HI 96822 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2002年 / 491卷 / 1-2期

关键词：

muon identification; Belle detector; KEKB;

D O I：

10.1016/S0168-9002(02)01164-6

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

This paper describes the muon identification method and its performance in the Belle experiment at KEKB. Muon and hadron likelihood are calculated for each track using its range and transverse scattering in the K-L-and-muon detector (KLM). We apply a cut on the normalized muon likelihood L-mu to identify the track as a muon. Above the detection threshold of 0.6 GeV/c, the measured muon detection efficiency and pion fake rate are approximately constant for momenta greater than 1.0 and 1.5 GeV/c, respectively. Between 1.0 and 3.0 GeV/c, the averaged muon detection efficiency is 89% and the pion fake rate per track is 1.4% over the KLM acceptance, using the standard selection criterion L-mu > 0.9. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：69 / 82

页数：14

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