English
Related papers

Related papers: Lepton Number Violation in Top-Color Assisted Tech…

200 papers

Majorana neutrino mass models with a scale of lepton number violation (LNV) of order TeV potentially lead to signals at the LHC. Here, we consider an extension of the standard model with a coloured octet fermion and a scalar leptoquark.…

High Energy Physics - Phenomenology · Physics 2019-06-26 E. Carquin , J. C. Helo , M. Hirsch , N. A. Neill

In this paper we calculate the technicolor correction to the production of a charged top pion in association with a W boson via b\bar{b} annihilation at the CERN Large Hadron Collider in the context of the topcolor assisted technicolor…

High Energy Physics - Phenomenology · Physics 2014-11-21 Jinshu Huang , Qunna Pan , Taiping Song , Gongru Lu

We analyze the diagonal and transition magnetic and electric dipole moments of charged leptons in extended technicolor (ETC) models, taking account of the multiscale nature of the ETC gauge symmetry breaking, conformal (walking) behavior of…

High Energy Physics - Phenomenology · Physics 2009-11-10 Thomas Appelquist , Maurizio Piai , Robert Shrock

Lepton family number violation processes arise in the $SU(6)_L \otimes U(1)_Y$ model due to the presence of an extra neutral gauge boson, Z$'$, with family changing couplings, and due to the fact that this model demands the existence of…

High Energy Physics - Phenomenology · Physics 2009-10-31 U. Cotti , R. Gaitan , A. Hernandez , W. Ponce , A. Zepeda

The NuTeV experiment at Fermilab has used a sign-selected neutrino beam to perform a search for the lepton number violating process nu_mu-bar e^- -> mu^- nu_e-bar, and to measure the cross-section of the Standard Model inverse muon decay…

High Energy Physics - Experiment · Physics 2008-11-26 NuTeV Collaboration , J. A. Formaggio , J. Yu

We propose a new idea to test a class of loop-induced neutrino mass mechanisms by searching for lepton number violating charged current processes with incident of a neutrino beam. The expected rates of these processes are estimated based on…

High Energy Physics - Phenomenology · Physics 2015-06-05 Shinya Kanemura , Yoshitaka Kuno , Toshihiko Ota

In general, attempts to extend the standard model will include extra gauge structure. We parameterize string and technicolor models for a Z' boson with primitive lepton flavor violating interactions. Calculations for its muon conversion…

High Energy Physics - Phenomenology · Physics 2007-05-23 Brandon Murakami , James D. Wells

We show that the CP-violating dipole form factors of the tau lepton can be of the order of $\alpha/\pi$ in units of the length scale set by the inverse $Z$ boson mass. We propose a few observables which are sensitive to these form factors…

High Energy Physics - Phenomenology · Physics 2016-09-06 W. Bernreuther , A. Brandenburg , P. Overmann

Many models, such as topcolor-assisted technicolor (TC2) models and flavor-universal TC2 models, predict the existence of extra U(1) gauge bosons $Z^{\prime}$, which couple preferentially to the third generation. The lepton flavor violating…

High Energy Physics - Phenomenology · Physics 2007-05-23 Chongxing Yue , Yanming Zhang , Hong Li

Black holes at the TeV scale are investigated in the extra large dimension scenario. We interpret the lightest black hole excitation as a singlet scalar field, and show how interaction terms can be appended to the standard model at the…

High Energy Physics - Phenomenology · Physics 2009-11-11 Jason Doukas , S. Rai Choudhury , G. C. Joshi

Motivated by the improving sensitivity, $R$, of experiments on $\mu~Ti \rightarrow e~Ti$ and the enhanced Higgs nucleon interaction, we study this lepton number violating process induced by Higgs exchange. Taking the possible sensitivity,…

High Energy Physics - Phenomenology · Physics 2009-10-22 Daniel Ng , John Ng

Models with explicit R-parity violation can induce new rare radiative decay modes of the $W$ boson into single supersymmetric particles which also violate lepton number. We examine the rate and signature for one such decay, $W\rightarrow…

High Energy Physics - Phenomenology · Physics 2009-10-22 T. G. Rizzo

Same-sign lepton colliders offer a promising environment to probe lepton number violation. We study processes that change lepton number by two units in the context of Majorana heavy neutral leptons and neutrinophilic scalars at…

High Energy Physics - Phenomenology · Physics 2024-11-26 Carlos Henrique de Lima , David McKeen , John N. Ng , Michael Shamma , Douglas Tuckler

We discuss and estimate the contributions of the new particles predicted by topcolor assisted technicolor(TC2) models to the muon anomalous magnetic moment $a_{\mu}$. Our results show that the contributions of Pseudo Goldstone bosons are…

High Energy Physics - Phenomenology · Physics 2008-11-26 Chongxing Yue , Qingjun Xu , Guoli Liu

Pseudo-Goldstone boson contributions to $t\bar{t}$ production rates in technicolor models with and without topcolor at the $\sqrt{s}=0.5 and 1.5$ TeV photon colliders and hadron colliders are reviewed. For reasonable ranges of the…

High Energy Physics - Phenomenology · Physics 2019-08-17 Hong-Yi Zhou , Yu-Ping Kuang , Chong-Xing Yue , Hua Wang , Gong-Ru Lu

We analyze the lepton number violating (LNV) meson decays that arise in a TeV scale Left Right Symmetry model. The right handed Majorana neutrino $N$ along with the right handed or Standard Model gauge bosons mediate the meson decays and…

High Energy Physics - Phenomenology · Physics 2017-08-30 Sanjoy Mandal , Manimala Mitra , Nita Sinha

Violations of Lorentz boost symmetry in the electron and photon sectors can be constrained by studying several different high-energy phenomenon. Although they may not lead to the strongest bounds numerically, measurements made in…

High Energy Physics - Phenomenology · Physics 2012-06-12 Brett Altschul

We study the contributions of the neutral pseudo Goldstone bosons (technipions and top-pions) to the t anti-t production cross sections at the Tevatron and the LHC in topcolor-assisted multiscale technicolor (TOPCMTC) models via the…

High Energy Physics - Phenomenology · Physics 2008-12-18 Chong-Xing Yue , Hong-Yi Zhou , Yu-Ping Kuang , Gong-Ru lu

Lepton Flavor Violating (LFV) processes are clear signals of physics beyond the Standard Model. We investigate the possibility of measuring this kind of processes at present and foreseeable future muon-electron colliders, taking into…

High Energy Physics - Phenomenology · Physics 2020-12-15 Fabio Bossi , Paolo Ciafaloni

We examine the constraints on the MNS lepton mixing matrix from the present and future experimental data of the neutrino oscillation and lepton number violation processes. We introduce a graphical representation of the CP violation phases…

High Energy Physics - Phenomenology · Physics 2014-11-17 K. Matsuda , N. Takeda , T. Fukuyama , H. Nishiura