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Auteur : Grafiati
Publié le 14 mars 2023

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1

Ahmed, Ijaz. « Sources of Charged Higgs Pair through Double or Triple Higgs Production at Linear Colliders ». Advances in High Energy Physics 2017 (2017) : 1–7. http://dx.doi.org/10.1155/2017/6139250.

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The production of triple Higgs (H+H-H0), (H+H-h0) and pairwise charged Higgs boson (H+H-) is studied in the context of future linear colliders within the two-Higgs-doublet model (2HDM) type II. The aim is to compare sources of charged Higgs pair through the above processes, that is, double and triple Higgs production. Cross sections are calculated at the leading order in 2HDM type II and Minimal Supersymmetric Standard Model (MSSM). Several orders of magnitude (~104) enhancement are observed in 2HDM compared to MSSM, while no sizable enhancement is seen in muon collider versus electron-positron collider. The analysis is based on a heavy charged Higgs with mass above 500 GeV. It is found that double charged Higgs production cross section (being the same in 2HDM and MSSM) is few femtobarns, while the triple Higgs production cannot exceed a fraction of femtobarn within the parameter space under study.
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2

Arhrib, Abdesslam, Rachid Benbrik, Chuan-Hung Chen, Renato Guedes et and Rui Santos. « Double neutral Higgs production in the two-Higgs doublet model at the LHC ». Journal of High Energy Physics 2009, no 08 (11 août 2009) : 035. http://dx.doi.org/10.1088/1126-6708/2009/08/035.

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3

Glover, E. W. N., et A. D. Martin. « Double Higgs boson production in Z decay ». Physics Letters B 226, no 3-4 (août 1989) : 393–96. http://dx.doi.org/10.1016/0370-2693(89)91217-3.

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4

Hashemi, M., et I. Ahmed. « Observability of triple or double charged Higgs production in two Higgs doublet model type II at an e+e- linear collider ». International Journal of Modern Physics A 30, no 04n05 (11 février 2015) : 1550022. http://dx.doi.org/10.1142/s0217751x15500220.

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In this paper the charged Higgs signal through triple or double Higgs production in a two Higgs doublet model (2HDM) type II is studied. The main production process is e+e- →H+H-H0 followed by the charged Higgs decay to a pair of τν and the neutral Higgs decay to [Formula: see text]. The alternative process H+W-H0 is also included as a source of charged Higgs signal in the analysis. The focus is on a future e+e- linear collider operating at [Formula: see text]. The final state under consideration [Formula: see text] is suitable for electroweak background rejection using the b-tagging tools. It is shown that although the signal cross-section is small, with a reasonable background suppression, high signal significance values are achievable at an integrated luminosity 500 fb-1 depending on the charged Higgs mass, tan β and the CP-odd neutral Higgs mass. Finally results are quoted in terms of the signal significance for charged Higgs in the mass range 160 < mH± < 400 GeV .
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5

Guo, Yu-Chen, Chong-Xing Yue et Zhi-Cheng Liu. « Double elementary Goldstone Higgs boson production in future linear colliders ». International Journal of Modern Physics A 33, no 08 (20 mars 2018) : 1850038. http://dx.doi.org/10.1142/s0217751x18500380.

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The Elementary Goldstone Higgs (EGH) model is a perturbative extension of the Standard Model (SM), which identifies the EGH boson as the observed Higgs boson. In this paper, we study pair production of the EGH boson in future linear electron positron colliders. The cross-sections in the TeV region can be changed to about −27%, 163% and −34% for the [Formula: see text], [Formula: see text] and [Formula: see text] processes with respect to the SM predictions, respectively. According to the expected measurement precisions, such correction effects might be observed in future linear colliders. In addition, we compare the cross-sections of double SM-like Higgs boson production with the predictions in other new physics models.
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6

Petrov, V. A., et R. A. Ryutin. « Exclusive double diffractive Higgs boson production at LHC ». European Physical Journal C 36, no 4 (août 2004) : 509–13. http://dx.doi.org/10.1140/epjc/s2004-01972-4.

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7

KEUNG, WAI-YEE. « DOUBLE HIGGS FROM W-W FUSION ». Modern Physics Letters A 02, no 10 (octobre 1987) : 765–70. http://dx.doi.org/10.1142/s0217732387000951.

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We study the double Higgs boson production in pp collider at SSC energy via W-W fusion. The calculation are based on the exact CALKUL method. We also checked the result with the equivalent WLWL approximation.
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8

Han, Jinzhong, Bingfang Yang, Ning Liu et Jitao Li. « Higgs boson production in the U(1)B−L model at the ILC ». International Journal of Modern Physics A 31, no 17 (20 juin 2016) : 1650099. http://dx.doi.org/10.1142/s0217751x16500998.

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In the framework of the minimal [Formula: see text] extension of the Standard Model, we investigate the Higgs boson production processes [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] at the International Linear Collider (ILC). We present the production cross-sections, the relative corrections and compare our results with the expected experimental accuracies for Higgs decay channel [Formula: see text]. In the allowed parameter space, we find that the effects of the three single Higgs boson production processes might approach the observable threshold of the ILC. But the Higgs signal strengths [Formula: see text] of the two double Higgs boson production processes are all out of the observable threshold so that these effects will be difficult to be observed at the ILC.
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9

Casalbuoni, R., et L. Marconi. « The linear BESS model and double Higgs-strahlung production ». Journal of Physics G : Nuclear and Particle Physics 29, no 6 (22 avril 2003) : 1053–60. http://dx.doi.org/10.1088/0954-3899/29/6/308.

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10

Godunov, S. I., M. I. Vysotsky et E. V. Zhemchugov. « Double Higgs boson production in the models with isotriplets ». Ядерная физика и инжиниринг 5, no 9 (2014) : 756–59. http://dx.doi.org/10.1134/s2079562914080144.

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11

Godunov, S. I., M. I. Vysotsky et E. V. Zhemchugov. « Double Higgs boson production in the models with isotriplets ». Physics of Atomic Nuclei 78, no 13 (décembre 2015) : 1493–96. http://dx.doi.org/10.1134/s1063778815130116.

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12

Abbasabadi, A., W. W. Repko, Duane A. Dicus et Roberto Vega. « Single and double Higgs production by gauge boson fusion ». Physics Letters B 213, no 3 (octobre 1988) : 386–90. http://dx.doi.org/10.1016/0370-2693(88)91781-9.

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13

Khoze, V. A., A. D. Martin et M. G. Ryskin. « Insight into double-pomeron-exchange Higgs production and backgrounds ». Physics Letters B 650, no 1 (juin 2007) : 41–45. http://dx.doi.org/10.1016/j.physletb.2007.04.060.

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14

Bialas, A., et P. V. Landshoff. « Higgs production in pp collisions by double-pomeron exchange ». Physics Letters B 256, no 3-4 (mars 1991) : 540–46. http://dx.doi.org/10.1016/0370-2693(91)91805-6.

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15

Paraskevopoulos, Christos. « Measurement of the Higgs quartic coupling c 2 v from di-Higgs Vector Boson Fusion in the bb¯τ+τ− channel ». Journal of Physics : Conference Series 2375, no 1 (1 novembre 2022) : 012009. http://dx.doi.org/10.1088/1742-6596/2375/1/012009.

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Abstract The Brout Englert Higgs (BEH) mechanism of electroweak symmetry breaking and mass generation was experimentally confirmed after the discovery of the Higgs boson at the Large Hadron Collider in 2012. The BEH mechanism not only predicts the existence of a massive scalar particle, but also requires this scalar particle to couple to itself. Double Higgs production provides a unique handle, since it allows the extraction of the trilinear Higgs self-coupling. VBF di-Higgs production also probes the quartic Higgs bosons to vector bosons coupling (c 2 v). In this topic the effort on setting constraints on c 2 v will be discussed. Event selection and reconstruction will be illustrated as well as a Neural Network designed to identify VBF events.
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16

Dib, Claudio O., Rogerio Rosenfeld et Alfonso Zerwekh. « Double Higgs production and quadratic divergence cancellation in little Higgs models with T-parity ». Journal of High Energy Physics 2006, no 05 (30 mai 2006) : 074. http://dx.doi.org/10.1088/1126-6708/2006/05/074.

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17

Liu, Yao-Bei, Xue-Lei Wang et Hong-Mei Han. « The Higgs-strahlung and double Higgs-strahlung production in the left-right twin Higgs model at the ILC ». EPL (Europhysics Letters) 81, no 3 (31 décembre 2007) : 31001. http://dx.doi.org/10.1209/0295-5075/81/31001.

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18

Brower, Richard, Marko Djuric et Chung-I. Tan. « Holographic double diffraction of Higgs and the AdS/CFT graviton/Pomeron ». International Journal of Modern Physics A 29, no 28 (10 novembre 2014) : 1446013. http://dx.doi.org/10.1142/s0217751x14460130.

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The holographic approach to double diffractive Higgs production is presented in terms of exchanging the AdS graviton/Pomeron. The goal is to provide a simple framework for central exclusive production from a dual strong coupling perspective.
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19

Boudjema, F., et E. Chopin. « Double Higgs production at the linear colliders and the probing of the Higgs self-coupling ». Zeitschrift f�r Physik C Particles and Fields 73, no 1 (1 décembre 1996) : 85–109. http://dx.doi.org/10.1007/s002880050298.

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20

Davies, Joshua. « Double Higgs production in the high- and low-energy limits ». Journal of Physics : Conference Series 1525 (avril 2020) : 012010. http://dx.doi.org/10.1088/1742-6596/1525/1/012010.

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21

Kartvelishvili, V. G., A. V. Luchinsky et A. A. Novoselov. « Double production of vector quarkonia in exclusive Higgs boson decays ». Physics of Atomic Nuclei 73, no 6 (juin 2010) : 949–54. http://dx.doi.org/10.1134/s1063778810060074.

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22

Boonekamp, M., A. De Roeck, R. Peschanski et C. Royon. « Higgs boson production via double Pomeron exchange at the LHC ». Physics Letters B 550, no 1-2 (décembre 2002) : 93–98. http://dx.doi.org/10.1016/s0370-2693(02)02846-0.

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23

Khosa, Charanjit K., et Veronica Sanz. « On the Impact of the LHC Run 2 Data on General Composite Higgs Scenarios ». Advances in High Energy Physics 2022 (9 février 2022) : 1–13. http://dx.doi.org/10.1155/2022/8970837.

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We study the impact of Run 2 LHC data on general composite Higgs scenarios, where nonlinear effects, mixing with additional scalars, and new fermionic degrees of freedom could simultaneously contribute to the modification of Higgs properties. We obtain new experimental limits on the scale of compositeness, the mixing with singlets and doublets with the Higgs, and the mass and mixing angle of top-partners. We also show that for scenarios where new fermionic degrees of freedom are involved in electroweak symmetry breaking, there is an interesting interplay among Higgs coupling measurements, boosted Higgs properties, SMEFT global analyses, and direct searches for single and double production of vector-like quarks.
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24

Arganda, Ernesto, Claudia Garcia-Garcia et Maria Jose Herrero. « Probing the Higgs self-coupling through double Higgs production in vector boson scattering at the LHC ». Nuclear Physics B 945 (août 2019) : 114687. http://dx.doi.org/10.1016/j.nuclphysb.2019.114687.

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25

Heinrich, Gudrun, et Jannis Lang. « SMEFT truncation effects in Higgs boson pair production at NLO QCD ». Journal of Physics : Conference Series 2438, no 1 (1 février 2023) : 012153. http://dx.doi.org/10.1088/1742-6596/2438/1/012153.

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Abstract We present results for Higgs boson pair production in gluon fusion at next-to-leading order in QCD, including effects of anomalous couplings within Standard Model Effective Field Theory (SMEFT). In particular, we investigate truncation effects of the SMEFT series, comparing different ways to treat powers of dimension-six operators and double operator insertions.
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26

BARGER, V., et T. HAN. « DOUBLE HIGGS BOSON PRODUCTION VIA WW FUSION IN TeV e+e− COLLISIONS ». Modern Physics Letters A 05, no 09 (10 avril 1990) : 667–74. http://dx.doi.org/10.1142/s0217732390000755.

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The production of two standard model Higgs bosons via the WW fusion process e+e− →[Formula: see text] would test the predicted HHH, HWW and HHWW couplings. At TeV energies this fusion cross section dominates over that from e+e− →ZHH and would give significant event rates for mH ≲ 1/2 MZ at high luminosity e+e− colliders. We evaluate the rates and present the dynamical distributions.
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27

Khoze, V. A., A. D. Martin et M. G. Ryskin. « Double-diffractive Higgs production and pomeron-pomeron luminometry in proton collisions ». Nuclear Physics B - Proceedings Supplements 99, no 1-2 (avril 2001) : 188–91. http://dx.doi.org/10.1016/s0920-5632(01)01331-7.

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28

GOYAL, ASHOK. « NEUTRINO MASS AND LEPTON NUMBER VIOLATION IN THE LITTLE HIGGS MODEL ». Modern Physics Letters A 21, no 25 (20 août 2006) : 1931–38. http://dx.doi.org/10.1142/s0217732306020561.

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We study lepton number violation in little Higgs model and find that the choice of putting triplet Higgs vev equal to zero so as not to have any tree level neutrino Majorana mass is not natural in the sense that such a term is generated at the one-loop level. We investigate the contribution of exotic lepton number violating terms on neutrinoless double beta decay, K meson decay and on trilepton production in ν–N scattering.
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29

Oliveira, A. C. A., et R. Rosenfeld. « Hidden sector effects on double Higgs production near threshold at the LHC ». Physics Letters B 702, no 4 (août 2011) : 201–4. http://dx.doi.org/10.1016/j.physletb.2011.06.086.

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30

Cox, Brian, Jeff Forshaw et Beate Heinemann. « Double diffractive higgs and di-photon production at the Tevatron and LHC ». Physics Letters B 540, no 3-4 (août 2002) : 263–68. http://dx.doi.org/10.1016/s0370-2693(02)02144-5.

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31

MARIOTTO, C. BRENNER, et V. P. GONÇALVES. « NONLINEAR GLUON EVOLUTION AND PHOTON PRODUCTION IN HADRONIC COLLISIONS ». International Journal of Modern Physics E 16, no 09 (octobre 2007) : 2984–88. http://dx.doi.org/10.1142/s0218301307008872.

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In this contribution we consider the influence of nonlinear gluon evolution in the production of prompt photons at the LHC pp collider. We consider the EHKQS parton distributions, which are based on the GLR-MQ evolution equations, and imply in an enhanced small-x gluon distribution at Q2 ≤ 10 GeV 2 relative to the LO DGLAP gluon distribution. We find an enhancement of low-pT photons for both single and double photon production. Consequences of this effect for the Quark-Gluon Plasma searches and for the QCD background to Higgs are also discussed.
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32

Godunov, S. I., M. I. Vysotsky et E. V. Zhemchugov. « Double Higgs production at LHC, see-saw type-II and Georgi-Machacek model ». Journal of Experimental and Theoretical Physics 120, no 3 (mars 2015) : 369–75. http://dx.doi.org/10.1134/s1063776115030073.

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33

Bzdak, Adam. « Exclusive Higgs and dijet production by double pomeron exchange. The CDF upper limits ». Physics Letters B 615, no 3-4 (juin 2005) : 240–46. http://dx.doi.org/10.1016/j.physletb.2005.04.020.

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34

Kumar, Mukesh, Xifeng Ruan, Alan S. Cornell, Rashidul Islam et Bruce Mellado. « Double Higgs production at FCC-he and prospects for measurements of self-coupling ». Journal of Physics : Conference Series 623 (11 juin 2015) : 012017. http://dx.doi.org/10.1088/1742-6596/623/1/012017.

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35

Hautmann, F. « Heavy top limit and double-logarithmic contributions to Higgs production at mH2/s⪡1 ». Physics Letters B 535, no 1-4 (mai 2002) : 159–62. http://dx.doi.org/10.1016/s0370-2693(02)01761-6.

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36

Hussein, Mohammad Yousif. « Double Parton Scattering in Associate Higgs Boson Production with Heavy Quarks at the LHC ». Journal of Modern Physics 04, no 04 (2013) : 1–5. http://dx.doi.org/10.4236/jmp.2013.44a001.

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37

D’Anzi, Brunella, Nicola De Filippis, Walaa Elmetenawee et Giorgia Miniello. « Signal to background discrimination for the production of double Higgs boson events via vector boson fusion mechanism in the decay channel with four charged leptons and two b-jets in the final state at the LHC experiment ». Journal of Physics : Conference Series 2438, no 1 (1 février 2023) : 012122. http://dx.doi.org/10.1088/1742-6596/2438/1/012122.

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Abstract At the CERN Large Hadron Collider experiment, the non-resonant double Higgs production via vector-boson fusion represents a unique mean to probe the VVHH (V=Z, W±) Higgs self-coupling at the current center of mass energies. Such a rare signal cannot be separated efficiently from huge backgrounds by applying a few-observables cut-based selection. Indeed, in this work, a Deep Learning algorithm is used to decide whether an event is more signal- or background-like. In particular, we report on two main aspects: results on a hyper-parameters parallel scanning strategy to distribute the training process across multiple nodes on the ReCaS-Bari data center computing resources and on the discriminating performance of a Deep Neural Network architecture.
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38

Zhai, Jiyuan, Dianjun Gong, Hongjuan Zheng, Peng Sha, Qiang Ma, Zhenghui Mi, Ruixiong Han et al. « Design of CEPC superconducting RF system ». International Journal of Modern Physics A 34, no 13n14 (20 mai 2019) : 1940006. http://dx.doi.org/10.1142/s0217751x19400062.

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CEPC is a 100-km double-ring circular electron–positron collider operating at 90–240 GeV center-of-mass energy of Z-pole, WW-pair production threshold and Higgs resonance. The conceptual design report (CDR) of CEPC has been published as an important step to move the project forward. The superconducting RF (SRF) system is one of the most important and challenging accelerator systems due to the wide range of beam energy and current. In this paper, the layout, parameters and configuration of the superconducting RF system for the CEPC collider ring will be introduced. Issues of beam cavity interactions including transient beam loading and coupled-bunch instabilities of accelerating mode are discussed.
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39

CHAKRABORTTY, JOYDEEP, MOUMITA DAS et SUBHENDRA MOHANTY. « CONSTRAINTS ON TeV SCALE MAJORANA NEUTRINO PHENOMENOLOGY FROM THE VACUUM STABILITY OF THE HIGGS ». Modern Physics Letters A 28, no 11 (10 avril 2013) : 1350032. http://dx.doi.org/10.1142/s0217732313500326.

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The vacuum stability condition of the Standard Model (SM) Higgs potential with mass in the range of 124–127 GeV puts an upper bound on the Dirac mass of the neutrinos. We study this constraint with the right-handed neutrino masses up to TeV scale. The heavy neutrinos contribute to ΔL = 2 processes like neutrinoless double beta decay and same-sign-dilepton (SSD) production in the colliders. The vacuum stability criterion also restricts the light-heavy neutrino mixing and constrains the branching ratio (BR) of lepton flavor-violating process, like μ→eγ mediated by the heavy neutrinos. We show that neutrinoless double beta decay with a lifetime ~1025 years can be observed if the lightest heavy neutrino mass is <4.5 TeV. We show that the vacuum stability condition and the experimental bound on μ→e γ together put a constrain on heavy neutrino mass MR>3.3 TeV. Finally we show that the observation of SSDs associated with jets at the LHC needs much larger luminosity than available at present. We have estimated the possible maximum cross-section for this process at the LHC and show that with an integrated luminosity 100 fb-1 it may be possible to observe the SSD signals as long as MR < 400 GeV.
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40

Bian, Ligong, Ning Chen et Yun Jiang. « Higgs pair production in the CP-violating two-Higgs-doublet model ». International Journal of Modern Physics A 32, no 34 (10 décembre 2017) : 1746002. http://dx.doi.org/10.1142/s0217751x17460022.

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The SM-like Higgs pair production is discussed in the framework of the general CP-violating two-Higgs-doublet model, where we find that the CP-violating mixing angles can be related to the Higgs self-couplings. Therefore, the future experimental searches for Higgs boson pairs can be constrained by the improved precision of the electric dipole moment measurements. Based on a series of constraints of the SM-like Higgs boson signal fits, the perturbative unitarity and stability bounds to the Higgs potential, and the most recent LHC searches for heavy Higgs bosons, we suggest a set of benchmark models for the future high-energy collider searches for Higgs pair production. The [Formula: see text] colliders operating at [Formula: see text] are capable of measuring the Higgs cubic self-couplings of the benchmark models directly. We also estimate the cross sections of the resonance contributions to the Higgs pair productions for the benchmark models at the future LHC and SppC/FCC-hh runs.
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41

Bonvini, Marco, et Simone Marzani. « Double Resummation for Higgs Production ». Physical Review Letters 120, no 20 (16 mai 2018). http://dx.doi.org/10.1103/physrevlett.120.202003.

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42

Contino, Roberto, Margherita Ghezzi, Mauro Moretti, Giuliano Panico, Fulvio Piccinini et Andrea Wulzer. « Anomalous couplings in double Higgs production ». Journal of High Energy Physics 2012, no 8 (août 2012). http://dx.doi.org/10.1007/jhep08(2012)154.

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43

Da Rold, Leandro, Manuel Epele, Anibal Medina, Nicolás I. Mileo et Alejandro Szynkman. « Enhancement of the double Higgs production via leptoquarks at the LHC ». Journal of High Energy Physics 2021, no 8 (août 2021). http://dx.doi.org/10.1007/jhep08(2021)100.

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Abstract Measurements of single Higgs production and its decays are in good agreement with the Standard Model. There is still room for large modifications in double Higgs production at LHC, though these effects may be correlated with large corrections to other observables, in particular single Higgs production. In this work we address the issue of enhancing double Higgs production in the presence of scalar leptoquarks while satisfying all experimental constraints. We show at leading order that including more than one species of leptoquarks, large cubic interactions with the Higgs can lead to sizable enhancement of di-Higgs production cross section at LHC, while at the same time keeping other Higgs observables and precision measurements under control. For masses above 800 GeV these corrections are in general below 30%, whereas in a viable scenario in which one of the leptoquarks can be light, specifically in the mass range 400 − 600 GeV, we show that it is possible to roughly double the SM cross section for di-Higgs production, implying that possible first hints of it may be probed at the high luminosity LHC at $$ \mathcal{L} $$ L ∼ 2 ab−1.
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44

Roloff, Philipp, Ulrike Schnoor, Rosa Simoniello et Boruo Xu. « Double Higgs boson production and Higgs self-coupling extraction at CLIC ». European Physical Journal C 80, no 11 (novembre 2020). http://dx.doi.org/10.1140/epjc/s10052-020-08567-7.

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AbstractThe Compact Linear Collider (CLIC) is a future electron–positron collider that will allow measurements of the trilinear Higgs self-coupling in double Higgs boson events produced at its high-energy stages with collision energies from $$\sqrt{s}$$ s = 1.4 to 3 TeV. The sensitivity to the Higgs self-coupling is driven by the measurements of the cross section and the invariant mass distribution of the Higgs-boson pair in the W-boson fusion process, $$\text {e}^{+}\text {e}^{-}\rightarrow {\text {H}\text {H}\nu \bar{\nu }}$$ e + e - → HH ν ν ¯ . It is enhanced by including the cross-section measurement of ZHH production at 1.4 TeV. The expected sensitivity of CLIC for Higgs pair production through W-boson fusion is studied for the decay channels $$\mathrm{b}\bar{\mathrm{b}}\mathrm{b}\bar{\mathrm{b}}$$ b b ¯ b b ¯ and $$\mathrm{b}\bar{\mathrm{b}}\mathrm{W}\mathrm{W}^{*}$$ b b ¯ W W ∗ using full detector simulation including all relevant backgrounds at $$\sqrt{s}$$ s = 1.4 TeV with an integrated luminosity of $$\mathcal {L}$$ L = 2.5 ab$$^{-1}$$ - 1 and at $$\sqrt{s}$$ s = 3 TeV with $$\mathcal {L}$$ L = 5 ab$$^{-1}$$ - 1 . Combining $$\text {e}^{+}\text {e}^{-}\rightarrow {\text {H}\text {H}\nu \bar{\nu }}$$ e + e - → HH ν ν ¯ and ZHH cross-section measurements at 1.4 TeV with differential measurements in $$\text {e}^{+}\text {e}^{-}\rightarrow {\text {H}\text {H}\nu \bar{\nu }}$$ e + e - → HH ν ν ¯ events at 3 TeV, CLIC will be able to measure the trilinear Higgs self-coupling with a relative uncertainty of $$-8\%$$ - 8 % and $$ +11\%$$ + 11 % at 68% C.L., assuming the Standard Model. In addition, prospects for simultaneous constraints on the trilinear Higgs self-coupling and the Higgs-gauge coupling HHWW are derived based on the $${\text {H}\text {H}\nu \bar{\nu }}$$ HH ν ν ¯ measurement.
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45

Kon, Tadashi, Takuto Nagura, Takahiro Ueda et Kei Yagyu. « Double Higgs boson production at e+e− colliders in the two-Higgs-doublet model ». Physical Review D 99, no 9 (22 mai 2019). http://dx.doi.org/10.1103/physrevd.99.095027.

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46

Nishiwaki, Kenji, Saurabh Niyogi et Ambresh Shivaji. « ttH anomalous coupling in double Higgs production ». Journal of High Energy Physics 2014, no 4 (avril 2014). http://dx.doi.org/10.1007/jhep04(2014)011.

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47

Contino, Roberto, Christophe Grojean, Mauro Moretti, Fulvio Piccinini et Riccardo Rattazzi. « Strong double higgs production at the LHC ». Journal of High Energy Physics 2010, no 5 (mai 2010). http://dx.doi.org/10.1007/jhep05(2010)089.

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48

Buttazzo, Dario, Roberto Franceschini et Andrea Wulzer. « Two paths towards precision at a very high energy lepton collider ». Journal of High Energy Physics 2021, no 5 (mai 2021). http://dx.doi.org/10.1007/jhep05(2021)219.

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Abstract We illustrate the potential of a very high energy lepton collider (from 10 to 30 TeV center of mass energy) to explore new physics indirectly in the vector boson fusion double Higgs production process and in direct diboson production at high energy. Double Higgs production is found to be sensitive to the anomalous Higgs trilinear coupling at the percent level, and to the Higgs compositeness ξ parameter at the per mille or sub-per mille level thanks to the measurement of the cross-section in the di-Higgs high invariant mass tail. High energy diboson (and tri-boson) production is sensitive to Higgs-lepton contact interaction operators at a scale of several tens or hundred TeV, corresponding to a reach on the Higgs compositeness scale well above the one of any other future collider project currently under discussion. This result follows from the unique capability of the very high energy lepton collider to measure Electroweak cross-sections at 10 TeV energy or more, where the effect of new physics at even higher energy is amplified. The general lesson is that the standard path towards precision physics, based on measurements of high-statistics processes such as single and double Higgs production, is accompanied at the very high energy lepton collider by a second strategy based on measurements at the highest available energy.
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49

Chen, Chuan-Ren, et Ian Low. « Double take on new physics in double Higgs boson production ». Physical Review D 90, no 1 (24 juillet 2014). http://dx.doi.org/10.1103/physrevd.90.013018.

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Huang, Li, Su-beom Kang, Jeong Han Kim, Kyoungchul Kong et Jun Seung Pi. « Portraying double Higgs at the Large Hadron Collider II ». Journal of High Energy Physics 2022, no 8 (9 août 2022). http://dx.doi.org/10.1007/jhep08(2022)114.

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Abstract The Higgs potential is vital to understand the electroweak symmetry breaking mechanism, and probing the Higgs self-interaction is arguably one of the most important physics targets at current and upcoming collider experiments. In particular, the triple Higgs coupling may be accessible at the HL-LHC by combining results in multiple channels, which motivates to study all possible decay modes for the double Higgs production. In this paper, we revisit the double Higgs production at the HL-LHC in the final state with two b-tagged jets, two leptons and missing transverse momentum. We focus on the performance of various neural network architectures with different input features: low-level (four momenta), high-level (kinematic variables) and image-based. We find it possible to bring a modest increase in the signal sensitivity over existing results via careful optimization of machine learning algorithms making a full use of novel kinematic variables.
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