The LHC experiments will perform sensitive tests of physics beyond the standard model (BSM). The investigation of decays of beauty hadrons represents an alternative approach in addition to direct BSM ...searches. The ATLAS and CMS efforts concentrate on those B-decays that can be efficiently selected already at the first and second level trigger. The most favorable trigger signature will be for B-hadron decays with muons in the final state. Using this trigger, ATLAS and CMS will be able to accommodate very high statistics in the rare decay sector. These are purely dimuon decays, and families of semimuonic exclusive channels. Already with data corresponding to an integrated luminosity of 1 fb
-1
, the sensitivity in the dimuon channels will be comparable to present measurements (world average). The strategy is to carry on the dimuon channel program up to nominal LHC luminosity. In particular the B
s
→μμ signal with ∼5 sigma significance can be measured combining low luminosity 10
33
cm
-2
s
-1
samples with those of one year of LHC operation at a luminosity of 10
34
cm
-2
s
-1
.
The RPC-based IFR system at BaBar experiment: preliminary results Piccolo, Davide; Palano, A; Bagnasco, S ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
01/2002, Letnik:
477, Številka:
1
Journal Article
Recenzirano
The IFR system is a RPC-based detector used to identify muons and neutral hadrons in the BaBar experiment at PEP II machine in SLAC. The RPC system can be used to reconstruct the trajectory of muons, ...pions and neutral hadrons interacting in the iron of the IFR. The different range and hit pattern allow to discriminate different particles crossing the IFR.
An overview of the system design and the preliminary results on the IFR performances are reported.
Resistive Plate Chambers have been chosen as active elements for the μ and K
l
detector in the BaBar experiment. This subsystem, now under construction, represents the most extensive use to date of ...the RPC technology. The design considerations are presented, together with preliminary results on the operating characteristics.
The muon and neutral hadron detector for BaBar Anulli, F.; Asmone, A.; Baldini Ferroli, R. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
05/1998, Letnik:
409, Številka:
1-3
Journal Article
Recenzirano
The muon and neutral hadron detector of the BaBar experiment for the PEP-II Asymmetric B-factory at SLAC uses Resistive Plate Counters (RPCs) as active detectors. A large fraction of the total ...system, which consists of approximately 800 chambers for an overall surface of 2000m2, has already been built and tested in cosmic rays. Preliminary results of the operating characteristics with a new non-flammable and environmentally safe gas mixture are reported.
The BaBar detector for muon identification and neutral hadron detection Paolucci, P; Evangelista, C; Palano, A ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
09/1996, Letnik:
379, Številka:
3
Journal Article
Recenzirano
The BaBar experiment is projected to study CP violation in B decays. Muon detection and K
L
0 identification are achieved by an Instrumented Flux Return (IFR) system based on resistive plate chamber ...detectors. In this paper the general layout of the IFR system will be described.
BaBar forward endcap upgrade Anulli, F.; Baldini, R.; Calcaterra, A. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
02/2005, Letnik:
539, Številka:
1
Journal Article
Recenzirano
Odprti dostop
The muon and neutral hadron detector (instrumented flux return or IFR) in the forward endcap of the BaBar detector at SLAC was upgraded by the installation of a new generation of resistive plate ...chambers (RPCs) and by increasing the absorber. The chamber replacement was made necessary by the rapid aging and efficiency loss of the original BaBar RPCs. Based on our experience with those original RPCs and 24 RPCs with thinner linseed oil treatments, improvements in the design, construction, and testing of the new generation RPCs were implemented and are described in detail.
Hadron, electron and muon response of a uranium-scintillator calorimeter
Nuclear instruments and methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment/Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
10/1987
Journal Article
Performances of RPCs in the BaBar experiment Anulli, F.; Baldini, R.; Band, H. ...
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
12/2003, Letnik:
515, Številka:
1
Journal Article
Recenzirano
Odprti dostop
The BaBar experiment uses a big system based on RPC detectors to discriminate muons from pions and to identify neutral hadrons. About
2000
m
2
of RPC chambers have been working at SLAC since the end ...of 1998. We report on the performances of the RPC chambers focusing on new problems discovered in the RPC behaviour. These problems started very soon after the installation of the chambers on the detector when the high-ambient temperature triggered an increase of dark currents inside the chambers and a reduction of the efficiency. Careful analysis of the BaBar data and dedicated R&D efforts in the laboratory have helped to identify the main source of the trouble in the linseed oil varnish on the bakelite electrodes.
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