共查询到20条相似文献,搜索用时 15 毫秒
1.
P. Crochet 《Pramana》2003,60(5):1051-1054
The physics capabilitites of the ALICE forward muon spectrometer are reviewed. 相似文献
2.
N. Bastid 《Physics of Atomic Nuclei》2008,71(9):1505-1513
ALICE, the dedicated heavy-ion experiment at the LHC, has also an important proton-proton physics program. The ALICE muon
spectrometer will be presented and the corresponding physics analysis will be reviewed. A particular emphasis will be placed
on heavy-flavor measurement.
(for the ALICE Collaboration)
The text was submitted by the author in English. 相似文献
3.
F. Guérin 《The European Physical Journal C - Particles and Fields》2007,49(1):143-148
ALICE (A Large Ion Collider Experiment) is the LHC detector dedicated to the study of nucleus–nucleus collisions, in which
the formation of the quark–gluon plasma (QGP) is expected. Heavy quarkonia, especially the Upsilon states, are relevant for
studying the QGP since they provide an essential probe of the earliest and hottest stages of heavy ion collisions. They will
be measured via their dimuon decay channel in ALICE in the muon spectrometer. The muon spectrometer performance has been studied
in simulations, the results will be presented with emphasis on the trigger efficiency and rate in Pb–Pb collisions. The expected
yields of Upsilon states will be extracted from a simulation based on a global fit of the dimuon mass spectra for different
collision centralities. 相似文献
4.
The European Physical Journal C - The ALICE forward muon spectrometer has been designed to measure the complete spectrum of heavy quark vector mesons via their muonic decays in pp,... 相似文献
5.
Electroweak radiative corrections to muon capture on nuclei are computed and found to be sizable. They enhance the capture rates for hydrogen and helium by 2.8% and 3.0%, respectively. As a result, the value of the induced pseudoscalar coupling, g(P)(exp), extracted from a recent hydrogen 1S singlet capture experiment is increased by about 21% to g(P)(exp)=7.3+/-1.2 and brought into good agreement with the prediction of chiral perturbation theory, g(P)(theory)=8.2+/-0.2. Implications for helium capture rate predictions are also discussed. 相似文献
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E. Scomparin 《Indian Journal of Physics》2011,85(6):935-940
The study of quarkonium polarization at hadron colliders represents an important test of the production models. Recent results,
obtained at CDF, are in striking disagreement with NRQCD predictions, although such a model correctly reproduces the production
cross sections. Furthermore, in nucleus-nucleus collisions, the observed degree of polarization may be related to the characteristics
of deconfined matter. Because of these interesting features, quarkonium polarization will surely represent an interesting
observable at LHC energies. In ALICE, the polarization of the Ω and Γ states can be measured in the dilepton channel, both in the central barrel and in the forward (2.5<y<4) muon arm. We present
the results of a feasibility study, relative to the muon channel, concerning p-p and Pb-Pb collisions, showing the expected
performance for the measurement of J/Ω and Γ polarization, both as a function of transverse momentum and centrality. 相似文献
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The European Physical Journal C - This paper presents the Muon Spectrometer of the ATLAS detector. The general characteristics of this system as acceptance, resolution and trigger capabilities are... 相似文献
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D. Yu. Bardin S. Riemann T. Riemann 《Zeitschrift fur Physik C Particles and Fields》1986,32(1):121-125
The electroweak radiative corrections to the decay widths of theW-boson, Γ \((W \to l\bar v,\bar ud,\bar cs)\) , have been calculated in the standard theory. The results are presented in terms of an electroweak form factorρ W and their dependence onm t , andM H (masses oft-quark and higgs boson) is studied. Typically,ρ W ?1 is of an order of one percent. The differenceρ lv W ?ρ qq′ W is negligible, 0.046%. The calculational scheme used is described in detail. 相似文献
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The efficiency for the detection and identification of photons with the ALICE PHOton Spectrometer PHOS has been studied with the Monte-Carlo generated data. In particular, the influence on the efficiency of the PHOS-module edge-effect and of the material in front of PHOS have been examined. 相似文献
16.
The efficiency for the detection and identification of photons with the ALICE PHOton Spectrometer PHOS has been studied with the Monte-Carlo generated data. In particular, the influence on the efficiency of the PHOS-module edge-effect and of the material in front of PHOS have been examined. 相似文献
17.
The partial decay width of the standard model Higgs particle into a general species of fermions
is given at the electroweak 1-loop level. The analytic formulae are applicable to light and heavy fermions. Numerical results are presented for Higgs decays intob andt quarks and into charged leptons. For not too heavy Higgs bosons the radiative corrections are of the order of a few per cent. In particular for Higgs bosons below theW
+
W
– threshold the correction to the partial width intob quarks is very small and insensitive to the top mass. For every heavy Higgs bosons the 1-loop corrections increase the fermionic decay widths for all channels up to 15%. 相似文献
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We explore the possibility of distinguishing the SM-like MSSM Higgs boson from the SM Higgs boson via Higgs boson pair production
at future muon collider. We study the behavior of the production cross-section in SM and MSSM with Higgs boson mass for various
MSSM parameters tan β and m
A
. We observe that at fixed CM energy, in the SM, the total cross-section increases with the increase in Higgs boson mass whereas
this trend is reversed for the MSSM. The changes that occur for the MSSM in comparison to the SM predictions are quantified
in terms of the relative percentage deviation in cross-section. The observed deviations in cross-section for different choices
of Higgs boson masses suggest that the measurements of the cross-section could possibly distinguish the SM-like MSSM Higgs
boson from the SM Higgs boson.
相似文献