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Showing 1 to 20 of 24 for “"Dimuon"”.
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Dimuon Production by High-Energy Neutrons
Made available in DSpace on 2015-05-13T15:22:05Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 7709101.PDF: 1551247 bytes, checksum: 2c9b1ef5bf166c7ff6dbcbd999114da3 (MD5) Previous issue date: 1976
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Dimuon production by high energy neutrons
… at Fermi National Accelerator Laboratory, the dimuon production by high energy neutrons has been measured for incident neutron energies of approximately 250 and 320 GeV. The mass spectra show clear peaks in the rho-omega mass region and at the J /psi mass. Cross sections and longitudinal and …
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Nuclear dependence of proton-induced Drell-Yan dimuon production at 120 GeV at SeaQuest
… (A) dependence of Drell-Yan (p + A → μ+μ− + X) dimuons produced by 120 GeV protons is presented here. The data was taken by the SeaQuest experiment at Fermilab using a proton beam extracted from its Main Injector. Over 61,000 dimuon pairs were recorded with invariant mass between 4.2 and 10GeV …
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A search for Z' bosons in the dimuon decay channel in 8 TeV proton-proton collisions
… proceeds via a comparison of the reconstructed dimuon invariant mass distribution with the expected distribution, given Standard Model only sources of background. In addition to the ``official'' ATLAS dimuon selection, I present a new dimuon selection, designed for this analysis, whose purpose …
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Search for contact interactions in the dimuon channel in p-p collisions at sqrt(s) = 7 tev at cms
… invariant mass distribution of the opposite-sign dimuon pairs. </p> <p>The Large Hadron Collider (LHC) experiment at the Center for </p> <p>European Nuclear Research (CERN) is built to explore new physics </p> <p>possibilities from proton-proton collisions occurring at the </p> <p>world's highest …
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Development of a high-level trigger for the dimuon spectrometer of the ALICE experiment at the large hadron collider
… the main decay channels of these mesons is into dimuons and ALICE has a dedicated dimuon spectrometer in order to study the spectra of these interesting particles. The signal is, however, swamped by a large background from several other muonic sources. Due to the large data rate expected for …
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Search For Contact Interactions Using The Dimuon Mass Spectrum In P-P Collisions At Sqrt(s) = 8 Tev At Cms
… number of events in the high-mass region of the dimuon mass spectrum. This dissertation describes a detailed search strategy for contact interactions using the Compact Muon Solenoid experiment. The dimuon mass spectrum above 300 GeV has been studied using the data collected in 2012 at sqrt(s) = 8 …
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Measurement of high-mass dimuon production for p+p and p+d collisions with 120 GeV proton beam at Fermilab
… Bjorken-{\it x} $>$ 0.3. SeaQuest coverage in dimuon mass ($M_{\mu^-\mu^+}$) ranging from 4.2 GeV to 8.8 GeV (equivalently $\sqrt{\tau}$ in range 0.3 to 0.9 ) and Feynman-{\it x} ($x_F$) ranging from 0 to 0.8 will extend the measurement from NuSea. Current results are presented in chapter 5. A …
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Production of charmonium states in 225 GeV/c pi-minus beryllium interactions
… on a beryllium target. The trigger required a dimuon signature which favored opposite sign muon pairs with a large combined PT. A search was then made for psi mesons of the charmonium spectrum by combining J,Af mesons found in the dimuon spectrum with photons detected in a large lead glass …
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Production of Charmonium States in 225 Gev/c Negative Pion Beryllium Interactions
… on a beryllium target. The trigger required a dimuon signature which favored opposite sign muon pairs with a large combined p(,(tau)). A search was then made for (chi) mesons of the charmonium spectrum by combining J/(psi) mesons found in the dimuon spectrum with photons detected in a large …
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A measurement of the inclusive differential Drell-Yan cross-section with dimuons at sqrt.s = 1.8 TeV
… = 1.8 TeV at the Fermilab Tevatron collider. The dimuon events are accepted in the central pseudorapidity region of $-0.6<\eta<0.6$ of the CDF detector. The differential cross section $d\sigma/dMdY\vert\sb{Y=0}$ is measured for dimuon invariant masses between 11 GeV/c$\sp2$ and 40 GeV/c$\sp2$ and …
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Particles produced in association with psi (3098)
Dimuon production has been studied at 217 Gev/c in pi- -hydrogen and pi- -beryllium collisions with a multiparticle spectrometer to detect associated particles. Particular attention has. been paid to the PSI Gamma spectrum which shows an excess of events in the region 3.5 Gev. Attributing this to …
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Measurement of direct CP asymmetry in B± → J/ K± decays produced in pp̅ collisions at √s = 1.96TeV
… charge conjugate) events were selected on the dimuon trigger and the yields were determined using a simultaneous mass and lifetime fit. After corrections, a measurement of ACP = 0.0034 ± 0.0043(stat.) ± 0.0060(syst.) is obtained, which is consistent with the SM prediction and previous …
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Angular distributions of high-mass dilepton production in hadron collisions
"The SeaQuest experiment is a fixed-target dimuon experiment currently running at the Fermi National Accelerator Laboratory (FNAL). By utilizing the high-intensity, 120GeV proton beam delivered by the FNAL Main Injector (MI), SeaQuest is able to measure proton-induced Drell-Yan dimuon production …
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ANALYSIS OF THE BOS ? ?+?- DECAY IN THE MSSM
The first observation of the dimuon decay of the strange B meson was reported by the CMS and LHCb collaboration. The small branching ratio inherent to this decay mode makes it highly sensitive for probing physics beyond the SM and we analyze this decay in the framework of the Minimal Supersymmetric …
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Reconstructing Dark Photons with the DarkQuest Experiment at Fermilab
… efficiency, sensitivity, and displaced dimuon mass resolution.
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Measurement of the CP Asymmetry in Semimuonic B Decays Produced in Proton-Antiproton Collisions at Center of Mass Energy= 1.96 TeV
… of pairs of B hadrons. Low transverse momentum dimuon pairs are evaluated to determine B hadron content using a log likelihood fit to two-dimensional impact parameter significance templates. Corrections are made for asymmetries arising from the detector, trigger, and hadrons which are …
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Study of muons associated with jets in proton-antiproton collision at [square root]s = 1.8 TeV
… particles overlapping with nearby jets. A small dimuon sample clarifies the muon signature. No signatures of undiscovered phenomena are observed in this new energy domain.
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Study of muons associated with jets in proton-antiproton collisions at sqrt.s = 1.8 TeV
… particles overlapping with nearby jets. A small dimuon sample clarifies the muon signature. No signatures of undiscovered phenomena are observed in this new energy domain.
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Probing the flavor dependence of proton's light-quark sea in the SeaQuest experiment at Fermilab
… at high Bjorken-$x$. By detecting high-mass dimuon events produced in the interaction of 120 GeV proton beam with liquid hydrogen (LH$_2$) and deuterium (LD$_2$) targets, the SeaQuest experiment probes the $\bar{d}/\bar{u}$ ratio up to $x\approx 0.45$. Data collection has been completed and …
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