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Gordon Research Seminar in Particle Physics: Pushing the Frontiers of Particle Physics During the LHC Run II Era

24โ€“25 Jun 2017
Hong Kong University of Science and Technology (HKUST)
Asia/Hong_Kong timezone

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Contribution List

62 / 62
43. Interference Study on ttbb Final State by Monte Carlo Event Generation for a Heavy Higgs Search at the ATLAS Experiment at the LHC
Wing Yan Wong
24/06/2017, 16:30

At the LHC, particle physicists have been actively searching for more Higgs bosons, since the discovery of one, at 126 GeV, in 2012. The 126 GeV Higgs boson behaves like the Standard Model (SM) described. However, it is uncertain whether it is the SM Higgs or a SM-like Higgs among a larger Higgs sector in some beyond Standard Model (BSM) theories. The HKU ATLAS group is interested in the...
44. Probing 6D Higgs Operators at Future e^{+}e^{-} Colliders
Wen Han Chiu
24/06/2017, 16:35

In an effective theory, the UV physics can be parametrized by a set of higher-dimensional operators. We explore the sensitivity potential at future $e^-e^+$ colliders to probe six-dinmensional operators which may deform Higgs physics at electroweak scale. Different from studies in literature, we (1) analyze the sensitivities of disentangling the single-operator contribution, under the...
45. Optimizing Boosted Decision Trees for SUSY Searches at ATLAS
Gabriel Gallardo
24/06/2017, 16:40

With searches for new physics in the ATLAS experiment at the LHC, it is possible to encounter O(100000) background events compared to O(10) expected signal events. In the face of such challenging conditions, it can be difficult to do a traditional cut-based analysis to minimize background while still preserving reasonable signal efficiency such that the limits on new physics can be extended....
46. How Does Leptonic Collider Indirectly Probe Neutralino Dark Matter?
Huayong Han
24/06/2017, 16:45

We have calculated the one-loop effective action in the Standard Model dimension-6 operator basis by integrating out neutralinos and charginos in Minimal Supersymmetric Standard Model (MSSM) by using the Covariant Derivative Expansion (CDE) method. The results were verified by comparing the $h\gamma \gamma$ effective coupling from these effective operators and from loop calculation or low...
47. Six-top qurark channel phenomenon
Li Huang
24/06/2017, 16:50

Multi-top quark signal is very important in LHC, and the existing paper just analysis two or four top quarks channel. Six quark channel is sometimes important for it's search can shed light to top partner discovery. We want to give the constrains of six top quark of recent experiment and give some hints for experimentalist on how to find them.
48. Light Stops, Heavy Higgs, and Heavy Gluinos in Supersymmetric Standard Models with Extra Matters
Takumi Kuwahara
24/06/2017, 16:55

We have explored the possibilities of scenarios with heavy gluinos and light stops in supersymmetric (SUSY) standard models with extra vector-like multiplets. If we assume the hierarchical structure for soft masses of the minimal supersymmetric standard model (MSSM) scalar fields and extra scalars, the light stop and the observed Higgs boson can be realized. While the stau is the lightest SUSY...
49. The Maximally Symmetric Composite Higgs
Teng Ma
24/06/2017, 17:00

Maximal symmetry is a novel tool for composite pseudo-Goldstone boson Higgs models: it is a remnant of an enhanced global symmetry of the composite fermion sector involving a twisting with the Higgs field. Maximal symmetry has far-reaching consequences: it ensures that the Higgs potential is finite and fully calculable, and also minimizes the tuning.
50. Top FCNC (tcH) Simulation Through Monte Carlo Generators
Jia Shian Wang
24/06/2017, 17:05

At the LHC, physicists have been looking for additional scalar particles since the discovery of the SM Higgs. This project investigates in the behaviour of an additional neutral scalar particle (flavon), based on a cosmological beyond standard model (BSM) scenario (Froggatt-Nielsen model), through a top flavour changing neutral current (FCNC) process (tcH) simulated by Monte Carlo (MC)...
51. Electroweak monopoles and the electroweak phase transition
Suntharan Arunasalam
24/06/2017, 17:10

Electroweak monopoles are spherically symmetric configurations of the gauge fields that derive their stability from their topological nature. This talk discusses the effect of regularised Cho-Maison monopoles on the strength of the electroweak phase transition and the implications of this on electroweak baryogenesis.
22. Higgs Boson Properties with ATLAS in (H -> ZZ*)
Ki Lie
24/06/2017, 19:30
23. Exploring the DNN Performance in Jet Physics
Taoli Cheng
24/06/2017, 19:45

Since the machine learning techniques are improving rapidly, it has been shown that the image recognition technique can be used to detect jet substructure. And it turns out that deep neural networks can match or outperform traditional approach. To push it further, we investigate the Recursive Neural Networks (RecNN), which embeds jet clustering history recursively as in natural language...
24. Disassembling the clockwork mechanism
David Sutherland
24/06/2017, 20:00

The original clockwork theories (1511.00132 and 1511.01827) comprise an N-site quiver of N axions, with symmetry breaking interactions arranged between them to leave a single massless mode with exponentially suppressed and (lattice) position dependent couplings to different sites. We study both clockwork's group-theoretic generalisation to quivers with different symmetry groups, and also its...
25. top-quark mass from diphoton mass spectrum
Hiroshi Yokoya
24/06/2017, 20:15

We calculate the $gg\to\gamma\gamma$ amplitude by including the $t\bar t$ bound-state effects near their mass threshold. In terms of the non-relativistic expansion of the amplitude, the LO contribution is an energy-independent term in the one-loop amplitude. We include the NLO contribution described by the non-relativistic Green function and part of the NNLO contribution. Despite a missing NLO...
26. Testing Naturalness
Jan Hajer
24/06/2017, 20:30

Solutions to the electroweak hierarchy problem typically introduce a new symmetry to stabilize the quadratic ultraviolet sensitivity in the self-energy of the Higgs boson. The new symmetry is either broken softly or collectively, as for example in supersymmetric and little Higgs theories. At low energies such theories contain naturalness partners of the Standard Model fields which are...
27. Testing naturalness through precision measurements
Jeremy Bernon
24/06/2017, 20:45

Symmetry-based solutions of the hierarchy problem generically predict new states to cancel the Standard Model one-loop quadratic divergence of the Higgs mass. Phenomenological investigations are generally focused on the top-partners, expected to be at the TeV scale by naturalness arguments, and with model-dependent quantum numbers. While direct LHC searches have so far turned empty-handed...
28. Quark-gluon discrimination in the search for gluino pair production at the LHC
Yasuhito Sakaki
24/06/2017, 21:00

We study the impact of including quark- and gluon-initiated jet discrimination in the search for strongly interacting supersymmetric particles at the LHC. Taking the example of gluino pair production, considerable improvement is observed in the LHC search reach on including the jet substructure observables to the standard kinematic variables within a multivariate analysis. In particular, quark...
29. Measurement of Correlation between Inclusively Produced Lambda0-anti-Lambda0, Lambda0-Lambda0, and anti-Lambda-anti-Lambda0 Hyperon Pairs at sqrt(s) = 7 TeV in the LHC ATLAS Experiment
Hok Chuen Cheng
24/06/2017, 21:15

We report here measurements of correlations between Lambda0-anti-Lambda0, Lambda0-Lambda0, and anti-Lambda-anti-Lambda0 hyperon pairs produced inclusively at the LHC. The analysis is based on hyperon pairs selected using the muon and minimum bias sample collected at the ATLAS experiment from proton-proton collisions at a center-of-mass energy of 7 TeV in 2010. Dynamical correlations between...
30. Search for neutrinoless double beta decay with the KamLAND-Zen experiment
Dmitry Chernyak
25/06/2017, 09:00

Neutrinoless double beta decay is an extremely rare nuclear transition which could establish the nature of neutrino (Majorana or Dirac particle), determine the absolute neutrino mass and the neutrino-mass hierarchy, check the lepton number conservation and possible contribution of right-handed admixture to weak interaction, existence of Nambu-Goldstone bosons (majorons) and other effects...
31. Towards a Precise Determination of the Reactor Antineutrino Flux at Daya Bay
Wenqiang Gu
25/06/2017, 09:15

In recent years, a discrepancy between the measured and the predicted antineutrino flux at nuclear reactors, the so-called โ€œReactor Antineutrino Anomalyโ€ (RAA), has emerged. This implies either a bias in the theoretical calculation of the flux, or neutrino oscillation beyond the three-neutrino paradigm. A more precise determination of the antineutrino flux can shed light onto the origin of the...
32. Dark Matter Search Results from PandaX
Binbin Yan
25/06/2017, 09:30

The Particle and Astrophysical Xenon (PandaX) project is a series of xenon-based ultra-low background experiments in the China JinPing Underground Laboratory (CJPL) targeting the unknown physics of dark matter and neutrinos. The first and second stage experiments (PandaX-I and II) both utilize dual-phase xenon time projection chamber to carry out direct search for the dark matter particles....
33. Leptogenesis from oscillations of heavy neutrinos with large mixing angles
Juraj Klaric
25/06/2017, 09:45

The extension of the Standard Model by heavy right-handed neutrinos can simultaneously explain the observed neutrino masses via the seesaw mechanism and the baryon asymmetry of the Universe via leptogenesis. If the mass of the heavy neutrinos is below the electroweak scale, they may be found at the LHC, BELLE II, NA62, the proposed SHiP experiment or a future high-energy collider. In this mass...
34. D leptonic decays at BESIII
Tian Ma
25/06/2017, 10:00

The world's largest e+e- collision samples at 3.773, 4.009 and 4.18 GeV have been collected at BESIII. By analyzing the decays of D(s)+ to l+v (l=mu,tau), D to K(pi)-l+v(l=e,mu), we report the determinations of CKM matrix elements |Vcs(d)|, D(s)+ decay constants, form factors of D semi-leptonic decays. These are important to calibrate the LQCD calculations of decay constant and form factors...
35. Exploring hadronization mechanisms in deep-inelastic scattering
Taisiya Mineeva
25/06/2017, 10:15

Hadronization is process that lays in the heart of QCD and refers to the formation of hadrons from quarks and gluons. Occurred shortly after the Big Bang when quark-gluon plasma cooled, it is currently explored using accelerator facilities and high energy collisions. Following the collision, a highly virtual parton radiates gluons or splits into a quark-antiquark pair - a process, known as...
36. Neutrino Mass Sum Rules
Martin Spinrath
25/06/2017, 10:30

Neutrino mass sum rules are an important class of predictions in flavour models relating the Majorana phases to the neutrino masses. This leads, for instance, to enormous restrictions on the effective mass as probed in experiments on neutrinoless double beta decay. While up to now these sum rules have in practically all cases been taken to hold exactly, we will go here beyond that. After a...
37. COMET muon to electron conversion experiment in J-PARC
Beomki Yeo
25/06/2017, 10:45

COMET experiment at J-PARC, Japan is aiming for the observation of charged lepton flavor violation (CLFV) process in which muon converts into electron without neutrinos. The expected single event sensitivity for this process is 3.1ร—10^(-15) for Phase-1 and 2.6ร—10^(-17) for Phase-2, which are the improvements of two and four orders of magnitude, respectively. In this presentation, recent...
52. Interpreting the 3 TeV WH resonance as a W' boson
Po-Yen Tseng
25/06/2017, 11:00

Motivated by a local 3.2-3.4 sigma resonance in WH and ZH in the ATLAS Run 2 data, we attempt to interpret the excess in terms of a W' boson in a SU(2)_1 \times SU(2)_2 \times U(1)_X model. We stretch the deviation from the alignment limit of the Equivalence Theorem, so as to maximize WH production while keeping the WZ production rate below the experimental limit. We found a viable though...
53. A Tale of Two Portals: Testing Light, Hidden New Physics at Future $e^+ e^-$ Colliders
Felix Yu
25/06/2017, 11:05

We investigate the prospects for producing new, light, hidden states at a future $e^+ e^-$ collider in a Higgsed dark $U(1)_D$ model, which we call the Double Dark Portal model. The simultaneous presence of both vector and scalar portal couplings immediately modifies the Standard Model Higgsstrahlung channel, $e^+ e^- \to Zh$, at leading order in each coupling. In addition, each portal leads...
54. Observation of a Baryonium Candidate at BES
Tianjue Min
25/06/2017, 11:10

Baryonium (proton-antiproton bound state) was predicted by theory long ago but not confirmed in experiment. In this talk, we will give a brief review of observation of a baryonium candidate at the BESII and BESIII experiments. Using 58 million J/psi decay events, the BESII experiment observed the proton-antiproton mass threshold enhancement X(ppbar) in J/psi->gamma p pbar and the X(1835) in...
55. Nonstandard neutrino interactions at the MOMENT
Yibing Zhang
25/06/2017, 11:15

The proposed MuOn-decay MEdium baseline NeuTrino beam experiment (MOMENT) is one of the neutrino experiments to measure the unknown 3-flavour frame parameter CP-violating phase. We consider the discovery reach of leptonic CP violation at MOMENT confronting with Non-standard neutrino Interactions (NSIs). We find that NSIs can induce bias in CP-violating phase measurements. We are able to...
56. The ALP miracle: unified inflaton and dark matter
Ryuji Daido
25/06/2017, 11:20

We propose a scenario where both inflation and dark matter are described by a single axion-like particle (ALP) in a unified manner. In a class of the minimal axion hilltop inflation, the effective masses at the maximum and mimimum of the potential have equal magnitude but opposite sign, so that the ALP inflaton is light both during inflation and in the true vacuum. After inflation, most of the...
57. Anomalous Triple Gauge Boson Coupling and Higgs Photoproduction Measurements at LHeC
Tao Xu
25/06/2017, 11:25

Understanding the electroweak sector of the Standard Model is one of the most important tasks in particle physics. We discuss its precise measurement at the proposed Large Hadron electron Collider(LHeC) with a focus on vector boson fusion processes. The first example is measuring charged anomalous triple gauge boson coupling(aTGC) in single W boson production process. Angular distributions of...
58. Probing the scale dependence of Non-Gaussianity through the CMB Spectral Distortion
Razieh Emami Meibogy
25/06/2017, 11:30
59. 3 Ways of Dark Matter Search at XMASS
Benda Xu
25/06/2017, 11:35

The XMASS program at Kamioka Observatory of Japan uses a self-shielding liquid xenon scintillator for the direct detection of dark matter and many other rare processes. The current running XMASS-I features 832kg ultra clean liquid xenon. Combined with low energy threshold of 0.3keV, XMASS-I is sensitive to low mass WIMPs and annual modulation search of dark matter.
60. New physics in multi-Higgs final states in 14 and 100 TeV colliders:
Sichun Sun
25/06/2017, 11:40

I am going to introduce how to parametrize the Standard Model and generic new-physics contributions by an effective Lagrangian that includes higher-dimensional operators. The selected subset of operators is motivated by composite-Higgs and Higgs-inflation models. The new physics effect can be potentially discovered in multi-Higgs final states in both 14 and future 100 TeV colliders.
In the...
61. Intermediate Mass Black Holes with Mirror Matter
Guido D'Amico
25/06/2017, 11:45

Mirror dark matter can potentially solve outstanding problems in structure formation, concerning the formation of small-scale structure on dwarf galaxy scales. We show that via its impact on residual ionization when early structure formation occurs, fragmentation into stars is naturally suppressed. The resulting formation of intermediate mass black holes in the mirror sector provides a new...
62. Increasing signal for Pulsar timing by two types of ultralight scalar axions
Hoang Nhan Luu
25/06/2017, 11:50

Pulsar timing array is an effective method to detect low-frequency gravitational waves. Khmelnitsky and Rubakov (2013) have proved that the oscillations in the arrival time could also be induced by the oscillations in pressure of ultralight scalar dark matter with mass around 10^{-22}. However, for simplicity, only one type of dark matter was taken into account. In this presentation, we...
38. Distinguishing between warm dark matter and late kinetic decoupling using CMB spectral distortions
James Diacoumis
25/06/2017, 13:30

The damping of perturbations in the early universe produces a distortion in the energy spectrum of the CMB photons which depends intimately on the properties of the photon temperature transfer functions. Here we propose a new method for probing dark matter models on extremely small-scales by looking at how these models affect the evolution of the photon transfer functions. We explore the...
39. Light Dark Matter in the SHiP experiment
Inar Timiryasov
25/06/2017, 13:45

The baryon asymmetry of the Universe could originate from the lepton asymmetry which was produced at relatively low temperatures. Using a model with three right-handed neutrinos ($\nu$MSM) as an example, we demonstrate how to obtain a kinetic equation for the baryon number density and show in which cases this accurate treatment could be important.
40. The cosmic lepton asymmetry and neutrino flavor transformation
Lucas Johns
25/06/2017, 14:00

A cosmic lepton asymmetry much larger than its baryonic counterpart is a prerequisite for the resonant production of sterile neutrino dark matter and is associated with a number of baryogenesis mechanisms. Incidentally, a lepton asymmetry can also dramatically affect the flavor transformation of the active neutrinos in the early universe. I will explain how a lepton asymmetry renders the...
41. Stochastic gravitational wave background from binary primordial black hole mergers
Sai Wang
25/06/2017, 14:15

The Advanced LIGO's discovery of gravitational-wave events GW150914 and GW151226 has stimulated extensive studies on the origin of binary black holes. Supposing the gravitational-wave events could be explained by binary primordial black hole mergers, we investigated the corresponding stochastic gravitational-wave background and pointed out the possibility to detect this background by the...
42. Evaluation and Conclusion
25/06/2017, 14:30
18. 3 Ways of Dark Matter Search at XMASS
Benda Xu

The XMASS program at Kamioka Observatory of Japan uses a self-shielding liquid xenon scintillator for the direct detection of dark matter and many other rare processes. The current running XMASS-I features 832kg ultra clean liquid xenon. Combined with low energy threshold of 0.3keV, XMASS-I is sensitive to low mass WIMPs and annual modulation search of dark matter.
20. A Tale of Two Portals: Testing Light, Hidden New Physics at Future $e^+ e^-$ Colliders
Felix Yu

We investigate the prospects for producing new, light, hidden states at a future $e^+ e^-$ collider in a Higgsed dark $U(1)_D$ model, which we call the Double Dark Portal model. The simultaneous presence of both vector and scalar portal couplings immediately modifies the Standard Model Higgsstrahlung channel, $e^+ e^- \to Zh$, at leading order in each coupling. In addition, each portal leads...
19. Anomalous Triple Gauge Boson Coupling and Higgs Photoproduction Measurements at LHeC
Tao Xu

Understanding the electroweak sector of the Standard Model is one of the most important tasks in particle physics. We discuss its precise measurement at the proposed Large Hadron electron Collider(LHeC) with a focus on vector boson fusion processes. The first example is measuring charged anomalous triple gauge boson coupling(aTGC) in single W boson production process. Angular distributions of...
16. Constraining axion-photon coupling from the light
Sichun Sun

We explore axion modified photon propagating property, which put non-trivial constraints on the axion-photon coupling. It also requires the presence of additional spin-0 CP even particles such as saxion or dilaton. This discussion helps constructing theory about axion dark matter or axion inflation.
1. Electroweak monopoles and the electroweak phase transition
Suntharan Arunasalam

Electroweak monopoles are spherically symmetric configurations of the gauge fields that derive their stability from their topological nature. This talk discusses the effect of regularised Cho-Maison monopoles on the strength of the electroweak phase transition and the implications of this on electroweak baryogenesis.
5. How Does Leptonic Collider Indirectly Probe Neutralino Dark Matter?
Huayong Han

We have calculated the one-loop effective action in the Standard Model dimension-6 operator basis by integrating out neutralinos and charginos in Minimal Supersymmetric Standard Model (MSSM) by using the Covariant Derivative Expansion (CDE) method. The results were verified by comparing the $h\gamma \gamma$ effective coupling from these effective operators and from loop calculation or low...
14. Increasing signal for Pulsar timing by two types of ultralight scalar axions
Hoang Nhan Luu

Pulsar timing array is an effective method to detect low-frequency gravitational waves. Khmelnitsky and Rubakov (2013) have proved that the oscillations in the arrival time could also be induced by the oscillations in pressure of ultralight scalar dark matter with mass around 10^{-22}. However, for simplicity, only one type of dark matter was taken into account. In this presentation, we...
10. Interference Study on ttbb Final State by Monte Carlo Event Generation for a Heavy Higgs Search at the ATLAS Experiment at the LHC
Wing Yan Wong

At the LHC, particle physicists have been actively searching for more Higgs bosons, since the discovery of one, at 126 GeV, in 2012. The 126 GeV Higgs boson behaves like the Standard Model (SM) described. However, it is uncertain whether it is the SM Higgs or a SM-like Higgs among a larger Higgs sector in some beyond Standard Model (BSM) theories. The HKU ATLAS group is interested in the...
17. Interpreting the 3 TeV WH resonance as a W' boson
Po-Yen Tseng

Motivated by a local 3.2-3.4 sigma resonance in WH and ZH in the ATLAS Run 2 data, we attempt to interpret the excess in terms of a W' boson in a SU(2)_1 \times SU(2)_2 \times U(1)_X model. We stretch the deviation from the alignment limit of the Equivalence Theorem, so as to maximize WH production while keeping the WZ production rate below the experimental limit. We found a viable though...
7. Light Stops, Heavy Higgs, and Heavy Gluinos in Supersymmetric Standard Models with Extra Matters
Takumi Kuwahara

We have explored the possibilities of scenarios with heavy gluinos and light stops in supersymmetric (SUSY) standard models with extra vector-like multiplets. If we assume the hierarchical structure for soft masses of the minimal supersymmetric standard model (MSSM) scalar fields and extra scalars, the light stop and the observed Higgs boson can be realized. While the stau is the lightest SUSY...
21. Nonstandard neutrino interactions at the MOMENT
Yibing Zhang

The proposed MuOn-decay MEdium baseline NeuTrino beam experiment (MOMENT) is one of the neutrino experiments to measure the unknown 3-flavour frame parameter CP-violating phase. We consider the discovery reach of leptonic CP violation at MOMENT confronting with Non-standard neutrino Interactions (NSIs). We find that NSIs can induce bias in CP-violating phase measurements. We are able to...
15. Observation of a Baryonium Candidate at BES
Tianjue Min

Baryonium (proton-antiproton bound state) was predicted by theory long ago but not confirmed in experiment. In this talk, we will give a brief review of observation of a baryonium candidate at the BESII and BESIII experiments. Using 58 million J/psi decay events, the BESII experiment observed the proton-antiproton mass threshold enhancement X(ppbar) in J/psi->gamma p pbar and the X(1835) in...
4. Optimizing Boosted Decision Trees for SUSY Searches at ATLAS
Gabriel Gallardo

With searches for new physics in the ATLAS experiment at the LHC, it is possible to encounter O(100000) background events compared to O(10) expected signal events. In the face of such challenging conditions, it can be difficult to do a traditional cut-based analysis to minimize background while still preserving reasonable signal efficiency such that the limits on new physics can be extended....
2. Probing 6D Higgs Operators at Future e^{+}e^{-} Colliders
Wen Han Chiu

In an effective theory, the UV physics can be parametrized by a set of higher-dimensional operators. We explore the sensitivity potential at future $e^-e^+$ colliders to probe six-dinmensional operators which may deform Higgs physics at electroweak scale. Different from studies in literature, we (1) analyze the sensitivities of disentangling the single-operator contribution, under the...
3. Probing the scale dependence of Non-Gaussianity through the CMB Spectral Distortion
Peter Cox, Razieh Emami Meibogy
12. Probing the scale dependence of Non-Gaussianity through the CMB Spectral Distortion
Razieh Emami Meibogy
6. Six-top qurark channel phenomenon
Li Huang

Multi-top quark signal is very important in LHC, and the existing paper just analysis two or four top quarks channel. Six quark channel is sometimes important for it's search can shed light to top partner discovery. We want to give the constrains of six top quark of recent experiment and give some hints for experimentalist on how to find them.
13. TBD
Guido D'Amico

TBD
11. The ALP miracle: unified inflaton and dark matter
Ryuji Daido

We propose a scenario where both inflation and dark matter are described by a single axion-like particle (ALP) in a unified manner. In a class of the minimal axion hilltop inflation, the effective masses at the maximum and mimimum of the potential have equal magnitude but opposite sign, so that the ALP inflaton is light both during inflation and in the true vacuum. After inflation, most of the...
8. The Maximally Symmetric Composite Higgs
Teng Ma

Maximal symmetry is a novel tool for composite pseudo-Goldstone boson Higgs models: it is a remnant of an enhanced global symmetry of the composite fermion sector involving a twisting with the Higgs field. Maximal symmetry has far-reaching consequences: it ensures that the Higgs potential is finite and fully calculable, and also minimizes the tuning.
9. Top FCNC (tcH) Simulation Through Monte Carlo Generators
Jia Shian Wang

At the LHC, physicists have been looking for additional scalar particles since the discovery of the SM Higgs. This project investigates in the behaviour of an additional neutral scalar particle (flavon), based on a cosmological beyond standard model (BSM) scenario (Froggatt-Nielsen model), through a top flavour changing neutral current (FCNC) process (tcH) simulated by Monte Carlo (MC)...
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