Higgs Search with the Compact Muon Solenoid(CMS) detector at the Large Hadron Collider(LHC)

2005 ◽  
Vol 20 (15) ◽  
pp. 3400-3402
Author(s):  
◽  
SATYAKI BHATTACHARYA
Keyword(s):  
Large Hadron Collider ◽  
Standard Model ◽  
Compact Muon Solenoid ◽  
Vector Boson ◽  
Hadron Collider ◽  
Center Of Mass ◽  
Gluon Fusion ◽  
Mass Range ◽  
Early Years ◽  
Higgs Search

The Large Hadron Collider(LHC) is a proton proton collider being built at CERN, Geneva which will collide two 7 TeV proton beams giving a center of mass energy of 14 TeV. The Compact Muon Solenoid (CMS) is a multi-purpose detector at the LHC which is designed to discover the Higgs boson over the mass range of 90 to 1000 GeV. Since LEP searches have put a 95% C.L. lower bound on (standard model) Higgs mass of 114.4 GeV and theory excludes mass above about 1 TeV, CMS should discover the Higgs if it exists. In this paper, we will review CMS's Higgs-discovery potential both in the Standard Model and the Minimal Supersymmetric Standard Model for Higgs bosons produced in gluon-gluon fusion and in vector boson fusion mechanisms. Particular emphasis will be placed on discovery in the early years of running with luminosity of about 2 × 1033cm-2/s.

scholarly journals Highlights from the Compact Muon Solenoid (CMS) Experiment

Universe ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 28
Author(s):  
Saranya Ghosh ◽  
on behalf of the CMS Collaboration
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Top Quark ◽  
Compact Muon Solenoid ◽  
Production Cross ◽  
Hadron Collider ◽  
Center Of Mass ◽  
Proton Collision ◽  
Center Of Mass Energy ◽  
Cms Experiment

The highlights of the recent activities and physics results leading up to the summer of 2018 from the Compact Muon Solenoid (CMS) experiment at the CERN Large Hadron Collider (LHC) are presented here. The CMS experiment has a very wide-ranging physics program, and only a very limited subset of the physics analyses being performed at CMS are discussed here, consisting of several important results from the analysis of proton-proton collision data at center-of-mass energy of 13 TeV. These include important analyses of Higgs boson physics, with the highlight being the first observation of the t t ¯ H production of the Higgs boson, along with analyses pertaining to precision standard model measurements, top quark physics, with the single top production cross-section measurement, and flavor physics, with the important observation of χ b (3P) states. Additionally, important searches for physics beyond the standard model are also presented.

scholarly journals AFTER THE STANDARD MODEL: NEW RESONANCES AT THE LHC

2009 ◽  
Vol 24 (01) ◽  
pp. 1-15 ◽  
Author(s):  
GUSTAAF BROOIJMANS
Keyword(s):  
Large Hadron Collider ◽  
Standard Model ◽  
Hadron Collider ◽  
Center Of Mass ◽  
New Physics ◽  
Mass Energy ◽  
High Expectations ◽  
Center Of Mass Energy ◽  
Energy Regime ◽  
The Standard Model

Experiments will soon start taking data at CERN's Large Hadron Collider (LHC) with high expectations for discovery of new physics phenomena. Indeed, the LHC's unprecedented center-of-mass energy will allow the experiments to probe an energy regime where the standard model is known to break down. Here, the experiments' capability to observe new resonances in various channels is reviewed.

scholarly journals HIGGS BOSON SEARCHES AT HADRON COLLIDERS

2005 ◽  
Vol 20 (12) ◽  
pp. 2523-2602 ◽  
Author(s):  
VOLKER BÜSCHER ◽  
KARL JAKOBS
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Vector Boson ◽  
Hadron Collider ◽  
Mass Range ◽  
Higgs Bosons ◽  
Standard Model Higgs Boson ◽  
Detector Performance ◽  
Discovery Potential ◽  
Fusion Mode

The investigation of the dynamics responsible for electroweak symmetry breaking is one of the prime tasks of experiments at present and future colliders. Experiments at the Tevatron [Formula: see text] Collider and at the CERN Large Hadron Collider (LHC) must be able to discover a Standard Model Higgs boson over the full mass range as well as Higgs bosons in extended models. In this review, the discovery potential for the Standard Model Higgs boson and for Higgs bosons in the Minimal Supersymmetric extension is summarized. Emphasis is put on those studies which have been performed recently within the experimental collaborations using a realistic simulation of the detector performance. This includes a discussion of the search for Higgs bosons using the vector boson fusion mode at the LHC, a discussion of the measurement of Higgs boson parameters as well as a detailed review of the MSSM sector for different benchmark scenarios. The Tevatron part of the review also contains a discussion of first physics results from data taken in the ongoing Run II.

scholarly journals Probing Anomalous Quartic Interactions at the LHC with proton tagging

2018 ◽  
Vol 172 ◽  
pp. 06002
Author(s):  
Cristian Baldenegro
Keyword(s):  
Large Hadron Collider ◽  
Standard Model ◽  
Particle Physics ◽  
Hadron Collider ◽  
Center Of Mass ◽  
Gauge Coupling ◽  
New Physics ◽  
Interaction Point ◽  
The Standard Model ◽  
Discovery Potential

One of the main goals of the Large Hadron Collider is to find signatures of physics Beyond the Standard Model of particle physics. One way to do this is by studying with high precision the interactions of the Standard Model. In this talk, we address the discovery potential of New Physics in the exclusive channel pp → p X p which relies on the general purpose detectors at the Large Hadron Collider and their respective forward proton detector stations, located at about ~ 210 m w.r.t. the interaction point. These reactions are highly sensitive to quartic electroweak gauge interactions. As a proof of concept, we discuss the exclusive diphoton production at high diphoton invariant mass. We quote sensitivities on the anomalous γγγγ coupling for an integrated luminosity of 300 fb1 at the center-of-mass energy of 14 TeV.We also discuss the discovery potential of 3γZ anomalous quartic gauge coupling by measuring the pp → p(γγ → Zγ)p reaction.

scholarly journals Search for heavy diboson resonances in semileptonic final states in pp collisions at $$\sqrt{s}=13$$ TeV with the ATLAS detector

2020 ◽  
Vol 80 (12) ◽  
Author(s):  
G. Aad ◽  
◽  
B. Abbott ◽  
D. C. Abbott ◽  
A. Abed Abud ◽  
...  
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Vector Boson ◽  
Hadron Collider ◽  
Gluon Fusion ◽  
Mass Range ◽  
Atlas Detector ◽  
Proton Collision ◽  
Final States ◽  
Heavy Resonances

AbstractThis paper reports on a search for heavy resonances decaying into WW, ZZ or WZ using proton–proton collision data at a centre-of-mass energy of $$\sqrt{s}=13$$ s = 13  TeV. The data, corresponding to an integrated luminosity of 139 $$\mathrm{fb}^{1}$$ fb 1 , were recorded with the ATLAS detector from 2015 to 2018 at the Large Hadron Collider. The search is performed for final states in which one W or Z boson decays leptonically, and the other W boson or Z boson decays hadronically. The data are found to be described well by expected backgrounds. Upper bounds on the production cross sections of heavy scalar, vector or tensor resonances are derived in the mass range 300–5000 GeV within the context of Standard Model extensions with warped extra dimensions or including a heavy vector triplet. Production through gluon–gluon fusion, Drell–Yan or vector-boson fusion are considered, depending on the assumed model.

scholarly journals Review of physics results from the Tevatron: Higgs boson physics

2015 ◽  
Vol 30 (06) ◽  
pp. 1541006 ◽  
Author(s):  
Thomas R. Junk ◽  
Aurelio Juste
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Vector Boson ◽  
Branching Ratio ◽  
Gluon Fusion ◽  
Mass Range ◽  
Higgs Bosons ◽  
Boson Mass ◽  
Decay Modes ◽  
The Standard Model

We review the techniques and results of the searches for the Higgs boson performed by the two Tevatron collaborations, CDF and DØ. The Higgs boson predicted by the Standard Model was sought in the mass range 90 GeV < mH < 200 GeV in all main production modes at the Tevatron: gluon–gluon fusion, WH and ZH associated production, vector boson fusion, and [Formula: see text] production, and in five main decay modes: [Formula: see text], H→τ+τ-, H→WW(*), H→ZZ(*) and H→γγ. An excess of events was seen in the [Formula: see text] searches consistent with a Standard Model Higgs boson with a mass in the range 115 GeV < mH < 135 GeV . Assuming a Higgs boson mass of mH = 125 GeV , studies of Higgs boson properties were performed, including measurements of the product of the cross section times the branching ratio in various production and decay modes, constraints on Higgs boson couplings to fermions and vector bosons, and tests of spin and parity. We also summarize the results of searches for supersymmetric Higgs bosons, and Higgs bosons in other extensions of the Standard Model.

scholarly journals GLUON-FUSION-INDUCED Zg AND Zgg PRODUCTIONS IN THE STANDARD MODEL AT THE LHC

2013 ◽  
Vol 28 (20) ◽  
pp. 1350101
Author(s):  
XIANGDONG GAO ◽  
QIANG LI ◽  
CAI-DIAN LÜ
Keyword(s):  
Large Hadron Collider ◽  
Standard Model ◽  
Cross Sections ◽  
Hadron Collider ◽  
Gluon Fusion ◽  
Leading Order ◽  
Total Cross Sections ◽  
The Standard Model

We report calculations of the gluon-induced Zg and Zgg productions in the Standard Model at the Large Hadron Collider (LHC) operating at both 7 TeV and 14 TeV collision energies. We present total cross-sections and differential distributions of the processes and compare them with the leading and next-to-leading order QCD pp → Z+1 jet, Z+2 jets results. Our results show that the gluon-induced Zg and Zgg productions contribute to pp → Z+1 jet, Z+2 jets at 1% level.

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