Related papers: Beam polarization precision requirements for futur…

Higgs Measurements at a Muon Collider

In light of the recent discovery of an approximately 126 GeV Higgs boson at the LHC, the particle physics community is beginning to explore the possibilities for a next-generation Higgs factory particle accelerator. In this report we study…

High Energy Physics - Experiment · Physics 2013-04-22 Alexander Conway , Hans Wenzel

Precise measurement of Higgs decay rate into WW* at future e^+e^- Linear Colliders

Assuming a SM or MSSM scenario, one expects a light Higgs boson which could be studied in great detail with a LC operating at \sqrt s>m_h+m_Z. In the TESLA scenario, with 500 fb^-1 accumulated at \sqrt s = 350 GeV, about 10^5 hZ events…

High Energy Physics - Phenomenology · Physics 2007-05-23 G. Borisov , F. Richard

Innovative Polarimetry for High$-$energy Cosmic $\gamma$ and $e^{+}/e^{-}$ Induced by Vector Photo$-$productionn

In this paper, we explore the possibility of measuring the complete polarizations of cosmic photons $\gamma$ and the polarizations of cosmic electrons $e^{-}$ and positrons $e^{+}$. Our innovative Vector Meson Photo-production induced…

High Energy Physics - Phenomenology · Physics 2023-07-04 Dart-yin A. Soh , Zhaoyi Qu

$\gamma$-ray polarimetry with conversions to $e^+e^-$ pairs: polarization asymmetry and the way to measure it

We revisit the measurement of the polarization fraction, $P$, and the measurement of the polarization angle of partially linearly-polarized gamma rays using their conversion to $e^+e^-$ pairs in the field of a nucleus. We show that an…

Instrumentation and Methods for Astrophysics · Physics 2016-12-21 Philippe Gros , Denis Bernard

Precision Inclusive Higgs Physics at $e^+e^-$ Colliders With Tracking Detectors and Without Calorimetry

A primary goal of a future $e^+e^-$ collider program will be the precision measurement of Higgs boson properties. For practical reasons it is of interest to determine the minimal set of detector specifications required to reach this and…

High Energy Physics - Phenomenology · Physics 2018-12-21 Patrick Draper , Jonathan Kozaczuk , Scott Thomas

Testing Higgs Coupling Precision and New Physics Scales at Lepton Colliders

The next-generation lepton colliders, such as CEPC, FCC-ee, and ILC will make precision measurement of the Higgs boson properties. We first extract the Higgs coupling precision from Higgs observables at CEPC to illustrate the potential of…

High Energy Physics - Phenomenology · Physics 2016-12-09 Shao-Feng Ge , Hong-Jian He , Rui-Qing Xiao

Possible Futures of Electroweak Precision: ILC, FCC-ee, and CEPC

The future of high-precision electroweak physics lies in e+e- collider measurements of properties of the Z boson, the W boson, the Higgs boson, and the top quark. We estimate the expected performance of three possible future colliders: the…

High Energy Physics - Phenomenology · Physics 2015-09-09 JiJi Fan , Matthew Reece , Lian-Tao Wang

Study of the $h \gamma Z$ coupling at the ILC

We studied the $e^+e^- \to h \gamma $ process at the International Linear Collider (ILC) at $\sqrt{s}=250$ GeV, based on the full detector simulation of the International Large Detector (ILD). This process is loop-induced in the Standard…

High Energy Physics - Experiment · Physics 2021-05-17 Y. Aoki , K. Fujii , J. Tian

Electroweak Physics with Polarized Electron Beams in a SuperKEKB Upgrade

Consideration is being given to upgrading the SuperKEKB e$^+$e$^-$ collider with polarized electron beams, which would open a new program of precision electroweak physics at a centre-of-mass energy of 10.58GeV, the mass of the…

High Energy Physics - Experiment · Physics 2019-07-10 J. Michael Roney

Polarization asymmetry and the Higgs boson production mechanisms

We calculate the cross section of Higgs boson production in the reaction e+e- -> neutrino anti-neutrino b b-bar for the case of left and right longitudinally polarized electron beam. Complete set of signal and irreducible background…

High Energy Physics - Phenomenology · Physics 2014-11-17 M. Dubinin , Y. Kurihara , Y. Shimizu

Measurement of $\Sigma^+$ transverse polarization in $e^+e^-$ collisions at $\sqrt{s} = 3.68-3.71$ GeV

Using $e^+e^-$ collision data collected with the BESIII detector at seven energy points ranging from 3.68 to 3.71 GeV and corresponding to an integrated luminosity of $652.1~{\rm pb^{-1}}$, we present an energy-dependent measurement of the…

High Energy Physics - Experiment · Physics 2024-12-31 BESIII Collaboration , M. Ablikim , M. N. Achasov , P. Adlarson , O. Afedulidis , X. C. Ai , R. Aliberti , A. Amoroso , Q. An , Y. Bai , O. Bakina , I. Balossino , Y. Ban , H. -R. Bao , V. Batozskaya , K. Begzsuren , N. Berger , M. Berlowski , M. Bertani , D. Bettoni , F. Bianchi , E. Bianco , A. Bortone , I. Boyko , R. A. Briere , A. Brueggemann , H. Cai , X. Cai , A. Calcaterra , G. F. Cao , N. Cao , S. A. Cetin , J. F. Chang , G. R. Che , G. Chelkov , C. Chen , C. H. Chen , Chao Chen , G. Chen , H. S. Chen , H. Y. Chen , M. L. Chen , S. J. Chen , S. L. Chen , S. M. Chen , T. Chen , X. R. Chen , X. T. Chen , Y. B. Chen , Y. Q. Chen , Z. J. Chen , Z. Y. Chen , S. K. Choi , G. Cibinetto , F. Cossio , J. J. Cui , H. L. Dai , J. P. Dai , A. Dbeyssi , R. E. de Boer , D. Dedovich , C. Q. Deng , Z. Y. Deng , A. Denig , I. Denysenko , M. Destefanis , F. De Mori , B. Ding , X. X. Ding , Y. Ding , Y. Ding , J. Dong , L. Y. Dong , M. Y. Dong , X. Dong , M. C. Du , S. X. Du , Y. Y. Duan , Z. H. Duan , P. Egorov , Y. H. Fan , J. Fang , J. Fang , S. S. Fang , W. X. Fang , Y. Fang , Y. Q. Fang , R. Farinelli , L. Fava , F. Feldbauer , G. Felici , C. Q. Feng , J. H. Feng , Y. T. Feng , M. Fritsch , C. D. Fu , J. L. Fu , Y. W. Fu , H. Gao , X. B. Gao , Y. N. Gao , Yang Gao , S. Garbolino , I. Garzia , L. Ge , P. T. Ge , Z. W. Ge , C. Geng , E. M. Gersabeck , A. Gilman , K. Goetzen , L. Gong , W. X. Gong , W. Gradl , S. Gramigna , M. Greco , M. H. Gu , Y. T. Gu , C. Y. Guan , A. Q. Guo , L. B. Guo , M. J. Guo , R. P. Guo , Y. P. Guo , A. Guskov , J. Gutierrez , K. L. Han , T. T. Han , F. Hanisch , X. Q. Hao , F. A. Harris , K. K. He , K. L. He , F. H. Heinsius , C. H. Heinz , Y. K. Heng , C. Herold , T. Holtmann , P. C. Hong , G. Y. Hou , X. T. Hou , Y. R. Hou , Z. L. Hou , B. Y. Hu , H. M. Hu , J. F. Hu , S. L. Hu , T. Hu , Y. Hu , G. S. Huang , K. X. Huang , L. Q. Huang , X. T. Huang , Y. P. Huang , Y. S. Huang , T. Hussain , F. H\ölzken , N. H\üsken , N. in der Wiesche , J. Jackson , S. Janchiv , J. H. Jeong , Q. Ji , Q. P. Ji , W. Ji , X. B. Ji , X. L. Ji , Y. Y. Ji , X. Q. Jia , Z. K. Jia , D. Jiang , H. B. Jiang , P. C. Jiang , S. S. Jiang , T. J. Jiang , X. S. Jiang , Y. Jiang , J. B. Jiao , J. K. Jiao , Z. Jiao , S. Jin , Y. Jin , M. Q. Jing , X. M. Jing , T. Johansson , S. Kabana , N. Kalantar-Nayestanaki , X. L. Kang , X. S. Kang , M. Kavatsyuk , B. C. Ke , V. Khachatryan , A. Khoukaz , R. Kiuchi , O. B. Kolcu , B. Kopf , M. Kuessner , X. Kui , N. Kumar , A. Kupsc , W. K\ühn , J. J. Lane , P. Larin , L. Lavezzi , T. T. Lei , Z. H. Lei , M. Lellmann , T. Lenz , C. Li , C. Li , C. H. Li , Cheng Li , D. M. Li , F. Li , G. Li , H. B. Li , H. J. Li , H. N. Li , Hui Li , J. R. Li , J. S. Li , K. Li , L. J. Li , L. K. Li , Lei Li , M. H. Li , P. R. Li , Q. M. Li , Q. X. Li , R. Li , S. X. Li , T. Li , W. D. Li , W. G. Li , X. Li , X. H. Li , X. L. Li , X. Y. Li , X. Z. Li , Y. G. Li , Z. J. 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C. Zhu , Z. A. Zhu , J. H. Zou , J. Zu

Precision measurement of the Z boson to electron neutrino coupling at the future circular colliders

At the high luminosity electron-positron circular colliders like FCC-ee in CERN and CEPC in China it will possible to measure very precisely $e^+e^-\to Z\gamma$ process with subsequent Z decay into particles invisible in the detector, that…

High Energy Physics - Phenomenology · Physics 2019-11-22 R. Aleksan , S. Jadach

Anomalous Higgs-top Coupling Pollution on Triple Higgs Coupling Extraction at Future High-Luminosity Electron-Positron Collider

One of the most challenging tasks for future high-luminosity electron-positron colliders is to extract Higgs triple coupling. It was proposed that this can be carried out via the precisely measuring the cross section of ZH associated…

High Energy Physics - Phenomenology · Physics 2015-11-11 Chen Shen , Shou-hua Zhu

The Z lineshape challenge: ppm and keV measurements

The FCC-ee offers powerful opportunities for direct or indirect evidence for physics beyond the Standard Model, via a combination of high precision measurements and searches for forbidden and rare processes and feebly coupled particles. A…

High Energy Physics - Experiment · Physics 2021-08-23 Juan Alcaraz Maestre , Alain Blondel , Mogens Dam , Patrick Janot

Isolating systematic effects with beam polarisation at $e^+e^-$ colliders

Future high-energy $e^+e^-$ colliders will provide some of the most precise tests of the Standard Model. Statistical uncertainties are expected to improve by orders of magnitude over current measurements. This provides a new challenge in…

High Energy Physics - Experiment · Physics 2021-05-21 Jakob Beyer , Jenny List

Optimal estimation of Higgs-Gauge Boson couplings at the future $e^+e^-$ colliders

The proposed $e^+e^-$ collider offers an ideal environment for precise estimation of Higgs boson properties which are of utmost importance to validate the Standard Model of particle physics. We investigate $hVV$ couplings, where $V\in…

High Energy Physics - Phenomenology · Physics 2025-12-08 Subhaditya Bhattacharya , Amir Subba , Abhik Sarkar

ISR corrections to associated $HZ$ production at future Higgs factories

We evaluate the QED corrections due to initial state radiation (ISR) to associated Higgs boson production in electron-positron ($e^+ e^-$) annihilation at typical energies of interest for the measurement of the Higgs properties at future…

High Energy Physics - Phenomenology · Physics 2018-01-17 Mario Greco , Guido Montagna , Oreste Nicrosini , Fulvio Piccinini , Gabriele Volpi

Physics Opportunities at mu+mu- Higgs Factories

We update theoretical studies of the physics opportunities presented by mu+mu- Higgs factories. Interesting measurements of the Standard Model Higgs decays into {\bar b}b, tau+tau- and WW* may be possible if the Higgs mass is less than…

High Energy Physics - Phenomenology · Physics 2007-05-23 C. Blöchinger , M. Carena , J. Ellis , H. Fraas , F. Franke , D. Garcia , S. Heinemeyer , S. Kraml , G. Moortgat-Pick , W. Murray , F. von der Pahlen , A. Pilaftsis , C. E. M. Wagner , G. Weiglein

Extended analysis of the MSSM Higgs boson production at the Photon Collider

New analysis of the heavy, neutral MSSM Higgs bosons H and A production at the Photon Collider is presented for M_A = 200, 250, 300 and 350 GeV in the parameter range corresponding to the so called "LHC wedge" and beyond. The expected…

High Energy Physics - Phenomenology · Physics 2007-05-23 P. Niezurawski , A. F. Zarnecki , M. Krawczyk

Measuring the Higgs Branching Fraction into two Photons at Future Linear \ee Colliders

We examine the prospects for measuring the \gaga branching fraction of a Standard Model-like Higgs boson with a mass of 120 GeV at the future TESLA linear \ee collider, assuming an integrated luminosity of 1 ab$^{-1}$ and center-of-mass…

High Energy Physics - Phenomenology · Physics 2009-01-07 E. Boos , J. -C. Brient , D. W. Reid , H. J. Schreiber , R. Shanidze