scholarly journals Discovery Potential for the Neutral Charmonium-LikeZ0(4200)byp-pAnnihilation

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Xiao-Yun Wang ◽  
Xu-Rong Chen
Keyword(s):  
Center Of Mass ◽  
Lagrangian Approach ◽  
Future Experiment ◽  
Production Mechanism ◽  
Energy Window ◽  
Mass Energy ◽  
Center Of Mass Energy ◽  
Effective Lagrangian ◽  
The Future ◽  
Discovery Potential

Inspired by the observation of charmonium-likeZ(4200), we explore the discovery potential of the neutralZ0(4200)production by antiproton-proton annihilation with an effective Lagrangian approach. By investigating thep-p→J/ψπ0process including theZ0(4200)signal and background contributions, it is found that the center of mass energyEc.m.≃4.0–4.5 GeV is the best energy window for searching the neutralZ0(4200), where the signal can be clearly distinguished from background. The relevant calculations not only are helpful to search for the neutralZ0(4200)in the future experiment but also will promote the understanding of the nature and production mechanism of neutralZ0(4200)better.

scholarly journals Measuring Higgs self-couplings in the presence of V V H and V V HH at the ILC

2019 ◽  
Vol 34 (18) ◽  
pp. 1950094 ◽  
Author(s):  
Satendra Kumar ◽  
Poulose Poulose ◽  
Rafiqul Rahaman ◽  
Ritesh K. Singh
Keyword(s):  
Higgs Boson ◽  
Strong Dependence ◽  
Center Of Mass ◽  
Electroweak Symmetry ◽  
Mass Energy ◽  
Center Of Mass Energy ◽  
Lagrangian Framework ◽  
Effective Lagrangian ◽  
Gauge Boson Couplings ◽  
Two Parameter

The recent discovery of a Higgs boson at LHC, while establishing the Higgs mechanism as the way of electroweak symmetry breaking, started an era of precision measurements involving the Higgs boson. In an effective Lagrangian framework, we consider the [Formula: see text] process, at an ILC running at a center-of-mass energy of 500 GeV to investigate the effect of the [Formula: see text] and [Formula: see text] couplings on the sensitivity of [Formula: see text] coupling on this process. Our results show that the sensitivity of the trilinear Higgs self-couplings on this process has somewhat strong dependence on the Higgs-gauge boson couplings. Single- and two-parameter reaches of ILC with integrated luminosity of 1000 fb[Formula: see text] are obtained on all the effective couplings indicating how these limits are affected by the presence of anomalous [Formula: see text] and [Formula: see text] couplings. The kinematic distributions studied to understand the effect of the anomalous couplings, again, show strong influence of [Formula: see text]–[Formula: see text] couplings on the dependence of these distributions on [Formula: see text] coupling. Similar results are indicated in the case of the process, [Formula: see text], considered at a center-of-mass energy of 2 TeV, where the cross-section is large enough. The effect of [Formula: see text] and [Formula: see text] couplings on the sensitivity of [Formula: see text] coupling is clearly established through our analyses in this process.

scholarly journals INSIGHTS INTO THE π-p → ηn REACTION MECHANISM

2009 ◽  
Vol 24 (02n03) ◽  
pp. 553-556 ◽  
Author(s):  
J. DURAND ◽  
B. JULIA-DIAZ ◽  
T.-S. H. LEE ◽  
B. SAGHAI ◽  
T. SATO
Keyword(s):  
Reaction Mechanism ◽  
Cross Section ◽  
Center Of Mass ◽  
Meson Production ◽  
Production Mechanism ◽  
Mass Energy ◽  
Cross Section Data ◽  
Center Of Mass Energy ◽  
Section Data ◽  
Coupled Channels

A dynamical coupled channels formalism is used to investigate the η–meson production mechanism on the proton induced by pions, in the total center-of-mass energy region from threshold up to 2 GeV. We show how and why studying exclusively total cross section data might turn out to be misleading in pinning down the reaction mechanism.

scholarly journals The near threshold π- p →ηn reaction in an effective Lagrangian approach

2014 ◽  
Vol 29 (04) ◽  
pp. 1450012 ◽  
Author(s):  
Qi-Fang Lü ◽  
Xiao-Hao Liu ◽  
Ju-Jun Xie ◽  
De-Min Li
Keyword(s):  
Cross Sections ◽  
Dominant Role ◽  
Center Of Mass ◽  
Lagrangian Approach ◽  
Present Calculation ◽  
Channel Processes ◽  
Nucleon Pole ◽  
Center Of Mass Energy ◽  
Effective Lagrangian ◽  
Near Threshold

The near threshold π- p →ηn reaction is studied within an effective Lagrangian approach and the isobar model. By considering the contributions from s- and u-channel nucleon pole and N*(1535) resonance, the total and differential cross-sections of the π- p →ηn reaction near threshold are calculated. Our theoretical results can fairly reproduce the current experimental data. It is also shown that while the center-of-mass energy lies in the range from the reaction threshold up to 1.65 GeV, s-channel N*(1535) resonance plays the dominant role. The effect from nucleon pole is found to be small but the interference terms between the N*(1535) resonance and the nucleon pole are significant. The contributions from t-channel processes are negligible in the present calculation.

scholarly journals The Production of Neutral N∗(11052) Resonance with Hidden Beauty from π-p Scattering

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Chen Cheng ◽  
Xiao-Yun Wang
Keyword(s):  
Cross Sections ◽  
Center Of Mass ◽  
Proton Synchrotron ◽  
Super Proton Synchrotron ◽  
Total Cross Sections ◽  
Center Of Mass Energy ◽  
Compass Experiment ◽  
Effective Lagrangian ◽  
Discovery Potential ◽  
Clear Peak

We investigate the discovery potential of the predicted neutral hidden beauty N∗(11052) resonance through π-p scattering within an effective Lagrangian approach. Two reactions π-p→K-Σ+ and π-p→ηbn are studied in this work, with nucleon pole exchange as the background. It is found that the contributions of the N∗(11052) resonance give clear peak structures in the magnitude of 1 μb near the threshold of N∗(11052) in the total cross sections. The numerical results indicate that the center of mass energy W≃11–11.1 GeV would be the best energy window for searching the N∗(11052) resonance, where the N∗(11052) signal can be easily distinguished from the background. The COMPASS experiment at CERN’s Super Proton Synchrotron (SPS) with pion beam of ≃280 GeV will be an ideal platform for searching the super-heavy resonance with hidden beauty, which is promising for testing the theoretical results.

THE PANDA EXPERIMENT — HADRON PHYSICS WITH ANTIPROTONS AT FAIR

2009 ◽  
Vol 24 (02n03) ◽  
pp. 369-376 ◽  
Author(s):  
◽  
JENS SÖREN LANGE
Keyword(s):  
Proton Beam ◽  
Center Of Mass ◽  
Beam Momentum ◽  
Accelerator Complex ◽  
Mass Energy ◽  
Momentum Range ◽  
Hadron Physics ◽  
Center Of Mass Energy ◽  
Panda Experiment ◽  
The Future

The PANDA (AntiProton Annihilations at Darmstadt) experiment will investigate [Formula: see text] and [Formula: see text] collisions in the anti-proton beam momentum range pbeam = 1–15 GeV / c , corresponding to a center-of-mass energy of [Formula: see text], at the future FAIR (Facility for Anti-Proton and Ion Research) accelerator complex at GSI, Darmstadt, Germany.

scholarly journals Constraining capability of Zγh production at the ILC

2017 ◽  
Vol 32 (02n03) ◽  
pp. 1750017
Author(s):  
Sher Alam ◽  
Subhasish Behera ◽  
Satendra Kumar ◽  
Shibananda Sahoo
Keyword(s):  
Higgs Boson ◽  
Center Of Mass ◽  
Beam Polarization ◽  
Mass Energy ◽  
Gauge Bosons ◽  
Center Of Mass Energy ◽  
Lagrangian Framework ◽  
Effective Lagrangian ◽  
Coupling Parameters

Higgs boson couplings with gauge bosons are probed through [Formula: see text] in an effective Lagrangian framework. For this study, the beam polarization facility at the ILC along with the typical center-of-mass energy of 500 GeV is considered. The reach of the ILC with an integrated luminosity of 300 fb[Formula: see text] in the determination of CP-conserving parameters is obtained. Sensitivity of the probe of each of these couplings in the presence of other couplings is investigated. The most influential coupling parameters are [Formula: see text]. Other parameters of significant effect are [Formula: see text] and [Formula: see text]. A detailed study of the various kinematic distributions represents possibilities to disentangle the effect of some of these couplings.

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