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We consider the possibility of observing deviations from the Standard Model gauge-boson self-couplings at a future $500$~GeV $e^+ e^-$ linear collider. We concentrate on the case in which the electroweak symmetry breaking sector is strongly…

High Energy Physics - Phenomenology · Physics 2009-10-28 A. A. Likhoded , T. Han , G. Valencia

An electron-proton/ion polarized beam collider (EPIC) with high luminosity and center-of-mass energy $\sqrt s = 25$ GeV would be a valuable facility for fundamental studies of proton and nuclear structure and tests of quantum…

High Energy Physics - Phenomenology · Physics 2007-05-23 S. J. Brodsky

Flavor symmetries are useful to realize fermion flavor structures in the standard model. In particular, discrete $A_4$ symmetry is used to realize lepton flavor structures, and some scalars which are called flavon are introduced to break…

High Energy Physics - Phenomenology · Physics 2018-01-17 Yu Muramatsu , Takaaki Nomura , Yusuke Shimizu , Hiroshi Yokoya

We investigate the collider signatures of the maximally flavor-violating $U(1)_{L_\mu-L_\tau}$ model, where a new gauge boson $Z^\prime$ and scalar triplets induce lepton flavor-changing interactions in the $\mu$-$\tau$ sector. Focusing on…

High Energy Physics - Phenomenology · Physics 2025-12-10 Jianing Qin , Fei Huang , Honglei Li , Zhi-Long Han , Jin Sun

We examine, in a model independent way, the sensitivity of a Linear Collider to the couplings of a light Higgs boson to gauge bosons. Including the possibility of CP violation, we construct several observables that probe the different…

High Energy Physics - Phenomenology · Physics 2014-11-18 Sudhansu S. Biswal , Debajyoti Choudhury , Rohini M. Godbole , Ritesh K. Singh

This paper presents measurements of distributions of charged particles which are produced in proton--proton collisions at a centre-of-mass energy of $\sqrt{s} = 8$ TeV and recorded by the ATLAS detector at the LHC. A special dataset…

High Energy Physics - Experiment · Physics 2016-08-26 ATLAS Collaboration

Construction of future electron-positron colliders (or dedicated electron linac) and muon colliders (or dedicated muon ring) tangential to Future Circular Collider (FCC) will give opportunity to utilize highest energy proton and nucleus…

Accelerator Physics · Physics 2018-03-14 Y. C. Acar , A. N. Akay , S. Beser , H. Karadeniz , U. Kaya , B. B. Oner , S. Sultansoy

We present a comprehensive analysis of the potential sensitivity of the Electron-Ion Collider (EIC) to charged lepton flavor violation (CLFV) in the channel $ep\to \tau X$, within the model-independent framework of the Standard Model…

High Energy Physics - Phenomenology · Physics 2021-07-29 Vincenzo Cirigliano , Kaori Fuyuto , Christopher Lee , Emanuele Mereghetti , Bin Yan

We utilize the lepton number violation signal process $p\, e^- \to \tau^+ jjj$ to search for heavy Majorana neutrinos at future proton-electron colliders. The LHeC (FCC-eh) is considered to run with an electron beam energy of 60 GeV, a…

High Energy Physics - Phenomenology · Physics 2023-10-26 Haiyong Gu , Ying-nan Mao , Hao Sun , Kechen Wang

A search for a signal consistent with the type-III seesaw mechanism in events with three or more electrons or muons is presented. The data sample consists of proton-proton collisions at sqrt(s) = 13 TeV collected by the CMS experiment at…

High Energy Physics - Experiment · Physics 2017-12-13 CMS Collaboration

We have explored the prospect of probing a neutral scalar ($H$) produced in association with one $b$-quark and decaying either invisibly or into a pair of $b$-quarks at the LHC with centre of mass energy $\sqrt s = 14$ TeV. In this regard,…

High Energy Physics - Phenomenology · Physics 2020-06-04 Katri Huitu , Subhadeep Mondal , Biswarup Mukhopadhyaya

The sensitivity of optimal integrated observables to electroweak triple gauge couplings is investigated for the process e-e+ -> W-W+ -> 4 fermions at future linear colliders. By a suitable reparameterisation of the couplings we achieve that…

High Energy Physics - Phenomenology · Physics 2011-09-13 Markus Diehl , Otto Nachtmann , Felix Nagel

We investigate charged lepton flavor violating top quark flavor-changing neutral current interactions at the proposed asymmetric muon-electron collision stage of the $\mu$TRISTAN collider, operating at a center-of-mass energy of 346 GeV.…

High Energy Physics - Phenomenology · Physics 2026-05-06 Abhik Sarkar

In this paper we study the effect of new physics contributions to the top quark pair production ($t\bar{t}$) in a possible future linear collider, such as the International Linear Collider (ILC). The use of a dimension-six gauge invariant…

High Energy Physics - Phenomenology · Physics 2013-03-22 Miguel C. N. Fiolhais

The differential production cross section of electrons from semileptonic heavy-flavour hadron decays has been measured at mid-rapidity ($|y| < 0.5$) in proton-proton collisions at $\sqrt{s} = 7$ TeV with ALICE at the LHC. Electrons were…

High Energy Physics - Experiment · Physics 2017-09-29 ALICE Collaboration

The energy spectra of the lepton(s) in eebar --> ttbar --> l^{+-}X/ l^+l^- X' at next linear colliders (NLC) are analyzed a model-independent way for arbitrary longitudinal beam polarizations as a general test of possible anomalous…

High Energy Physics - Phenomenology · Physics 2007-05-23 Zenro Hioki

A first measurement of the inelastic cross-section of proton-proton collisions at sqrt{s} =7 TeV using the ATLAS detector at the Large Hadron Collider is presented. The measurement is made using scintillators in the forward region of the…

High Energy Physics - Experiment · Physics 2019-08-13 Lauren Tompkins

The use of the existing proton storage rings combined with electron linear accelerator as a ring-linac type electron-proton or photon-proton collider is investigated. The total CM-energy of Proton-ring and Electron-linac Collider (PRELC) is…

High Energy Physics - Phenomenology · Physics 2009-09-25 Raimo Vuopionperä

Interest in searches for Charged Lepton Flavor Violation (CLFV) has continued in the past few decades since the observation of CLFV will indicate new physics beyond the Standard Model (BSM). As several future lepton colliders with high…

High Energy Physics - Phenomenology · Physics 2024-06-04 Xunye Cai , Jingshu Li , Ran Ding , Meng Lu , Zhengyun You , Qiang Li

This article reports a measurement of the production cross section of prompt isolated photon pairs in proton-antiproton collisions at \sqrt{s} = 1.96 TeV using the CDF II detector at the Fermilab Tevatron collider. The data correspond to an…

High Energy Physics - Experiment · Physics 2011-10-06 CDF Collaboration , T. Aaltonen