scholarly journals Experimental results from CMS

2018 ◽  
Vol 192 ◽  
pp. 00005
Author(s):  
John Strologas
Keyword(s):  
Experimental Results ◽  
Cms Experiment ◽  
Small X ◽  
Integrated Luminosity

We present some of the latest results of the CMS experiment, covering analyses in QCD multijet, top, bottom, Higgs, forward/small-x QCD, heavyion, exotic, and supersymmetry physics utilizing LHC integrated luminosity up to ~80 fb-1.

scholarly journals Recent CMS results on soft and small-x QCD physics

2019 ◽  
Vol 206 ◽  
pp. 06006
Author(s):  
Rajat Gupta
Keyword(s):  
Minimum Bias ◽  
Underlying Event ◽  
Jet Production ◽  
Cms Experiment ◽  
Small X

We present latest results of soft and small-x QCD measurements with the CMS experiment, such as minimum bias/underlying event physics, and studies on forward jet production.

RECENT EXPERIMENTAL RESULTS AND DEVELOPMENTS ON THE RESISTIVE PLATE CHAMBERS FOR THE CMS EXPERIMENT

2001 ◽  
Vol 16 (supp01c) ◽  
pp. 1135-1138
Author(s):  
S. ALTIERI ◽  
G. BELLI ◽  
G. BRUNO ◽  
R. GUIDA ◽  
M. MERLO ◽  
...  
Keyword(s):  
Research And Development ◽  
Rate Capability ◽  
Operating Conditions ◽  
Experimental Results ◽  
Development Activity ◽  
The Past ◽  
Cms Experiment ◽  
Overall Performance ◽  
Resistive Plate Chambers ◽  
Intense Research

Resistive Plate Chambers (RPC) have been chosen as dedicated trigger detectors for the CMS experiment at the LHC. The expected severe operating conditions have required an intense research and development activity on these detectors over the past years. Experimental results on overall performance of large chambers, rate capability, ageing and photon sensitity are reviewed. In all of these tests the detector has proven to achieve good enough performance for successful use at the LHC.

scholarly journals Recent CMS B physics results

2018 ◽  
Vol 182 ◽  
pp. 02098
Author(s):  
Sergey Polikarpov
Keyword(s):  
Pair Production ◽  
B Physics ◽  
Rare Decay ◽  
Pp Collisions ◽  
Cms Experiment ◽  
Angular Analysis ◽  
8 Tev ◽  
Using Data ◽  
Integrated Luminosity

Various recent CMS B physics results are reported, including measurement of B hadron lifetimes; observation of Υ(1S) pair production; angular analysis of the rare decay B0 → K*0μ+μ-; search for X(5568) state. All analyses are performed using data collected by the CMS experiment at the LHC in pp collisions at √s = 8 TeV, which corresponds to an integrated luminosity of about 20 fb-1.

"REDISCOVERING" THE STANDARD MODEL AT CMS

2011 ◽  
Vol 26 (05) ◽  
pp. 309-317
Author(s):  
◽  
DAN GREEN
Keyword(s):  
Large Hadron Collider ◽  
Standard Model ◽  
High Energy Physics ◽  
Hadron Collider ◽  
Late Summer ◽  
High Energy ◽  
Cms Experiment ◽  
The Standard Model ◽  
Energy Physics ◽  
Integrated Luminosity

The Large Hadron Collider (LHC) began 7 TeV C.M. energy operation in April, 2010. The CMS experiment immediately analyzed the earliest data taken in order to "rediscover" the Standard Model (SM) of high energy physics. By the late summer, all SM particles were observed and CMS began to search for physics beyond the SM and beyond the present limits set at the Fermilab Tevatron. The first LHC run ended in Dec., 2010 with a total integrated luminosity of about 45 pb-1 delivered to the experiments.

scholarly journals Searches for supersymmetry with the CMS experiment

2018 ◽  
Vol 182 ◽  
pp. 02060
Author(s):  
Alexis Kalogeropoulos ◽  
Keyword(s):  
Proton Collision ◽  
Proton Proton ◽  
Cms Experiment ◽  
Proton Proton Collision ◽  
Integrated Luminosity

We report on recent results by the CMS Collaboration on searches for supersymmetry based on a sample of proton-proton collision data at √s = 13 TeV, corresponding to a total integrated luminosity of 35.9 fb-1.

scholarly journals Top FCNC searches at HL-LHC with the CMS experiment

2018 ◽  
Vol 191 ◽  
pp. 02009 ◽  
Author(s):  
Petr Mandrik ◽  
Keyword(s):  
Cross Sections ◽  
Top Quark ◽  
Neutral Current ◽  
Hadron Collider ◽  
Particle Accelerator ◽  
Centre Of Mass ◽  
Mass Energy ◽  
Flavor Change Neutral Current ◽  
Cms Experiment ◽  
Integrated Luminosity

The Large Hadron Collider is the world’s largest and highest centerof- mass energy particle accelerator. During the Phase I operation it is expected that the LHC operated at a centre-of-mass energy of 13 TeV will deliver to the CMS experiment total integrated luminosity of ~300 fb-1 till 2023. The High Luminosity LHC upgrade is expected to run at a centre-of-mass energy of 14 TeV and will allow ATLAS and CMS to collect integrated luminosities of the order of 300 fb-1 per year, and up to 3000 fb-1 during the HL-LHC projected lifetime of ten years. The large expected integrated luminosity enables the exploration of the multi-TeV scale by searches for particles with high masses as well as by investigation of processes with very low cross sections such as Flavor-Change Neutral Current interactions in top quark sector. In this report we present a proposal for the top quark FCNC searches at HL-LHC based on Monte-Carlo simulation of the upgraded CMS detector.

Diagnostics of Gold Laser Plasmas

1988 ◽  
Vol 102 ◽  
pp. 357-360
Author(s):  
J.C. Gauthier ◽  
J.P. Geindre ◽  
P. Monier ◽  
C. Chenais-Popovics ◽  
N. Tragin ◽  
...  
Keyword(s):  
Experimental Results ◽  
Pure Gold ◽  
Electronic Temperature ◽  
X Ray ◽  
Laser Plasmas ◽  
Collisional Radiative Model ◽  
Radiative Model

AbstractIn order to achieve a nickel-like X ray laser scheme we need a tool to determine the parameters which characterise the high-Z plasma. The aim of this work is to study gold laser plasmas and to compare experimental results to a collisional-radiative model which describes nickel-like ions. The electronic temperature and density are measured by the emission of an aluminium tracer. They are compared to the predictions of the nickel-like model for pure gold. The results show that the density and temperature can be estimated in a pure gold plasma.

Observation of Phase Contrast Images in STEM and CTEM Modes by Using 100 kV Field Emission Electron Gun

1974 ◽  
Vol 32 ◽  
pp. 390-391
Author(s):  
Y. Harada ◽  
T. Goto ◽  
H. Koike ◽  
T. Someya
Keyword(s):  
Field Emission ◽  
Phase Contrast ◽  
Image Formation ◽  
Fresnel Diffraction ◽  
Experimental Results ◽  
Electron Gun ◽  
Scanning Microscopy ◽  
Emission Electron ◽  
Lattice Images

Since phase contrasts of STEM images, that is, Fresnel diffraction fringes or lattice images, manifest themselves in field emission scanning microscopy, the mechanism for image formation in the STEM mode has been investigated and compared with that in CTEM mode, resulting in the theory of reciprocity. It reveals that contrast in STEM images exhibits the same properties as contrast in CTEM images. However, it appears that the validity of the reciprocity theory, especially on the details of phase contrast, has not yet been fully proven by the experiments. In this work, we shall investigate the phase contrast images obtained in both the STEM and CTEM modes of a field emission microscope (100kV), and evaluate the validity of the reciprocity theory by comparing the experimental results.

A new dissociation mode for dislocations in silicon

1978 ◽  
Vol 36 (1) ◽  
pp. 346-347
Author(s):  
A. Ourmazd ◽  
G.R. Booker ◽  
C.J. Humphreys
Keyword(s):  
Detailed Examination ◽  
Experimental Results ◽  
Dislocation Network ◽  
Weak Beam ◽  
Phosphorus Doped

A (111) phosphorus-doped Si specimen, thinned to give a TEM foil of thickness ∼ 150nm, contained a dislocation network lying on the (111) plane. The dislocation lines were along the three <211> directions and their total Burgers vectors,ḇt, were of the type , each dislocation being of edge character. TEM examination under proper weak-beam conditions seemed initially to show the standard contrast behaviour for such dislocations, indicating some dislocation segments were undissociated (contrast A), while other segments were dissociated to give two Shockley partials separated by approximately 6nm (contrast B) . A more detailed examination, however, revealed that some segments exhibited a third and anomalous contrast behaviour (contrast C), interpreted here as being due to a new dissociation not previously reported. Experimental results obtained for a dislocation along [211] with for the six <220> type reflections using (g,5g) weak-beam conditions are summarised in the table below, together with the relevant values.

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