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We consider extensions of the standard model based on open strings ending on D-branes, with gauge bosons due to strings attached to stacks of D-branes and chiral matter due to strings stretching between intersecting D-branes. Assuming that…

High Energy Physics - Phenomenology · Physics 2010-07-01 Luis A Anchordoqui , Haim Goldberg , Dieter Lust , Satoshi Nawata , Stephan Stieberger , Tomasz R. Taylor

[Abridged] We consider extensions of the standard model based on open strings ending on D-branes. Assuming that the fundamental string mass scale M_s is in the TeV range and that the theory is weakly coupled, we discuss possible signals of…

We consider extensions of the standard model based on open strings ending on D-branes, with gauge bosons due to strings attached to stacks of D-branes and chiral matter due to strings stretching between intersecting D-branes. Assuming that…

High Energy Physics - Phenomenology · Physics 2014-11-20 Luis A. Anchordoqui , Haim Goldberg , Dieter Lust , Stephan Stieberger , Tomasz R. Taylor

The mass scale of fundamental strings can be as low as few TeV/c^2 provided that spacetime extends into large extra dimensions. We discuss the phenomenological aspects of weakly coupled low mass string theory related to experimental…

High Energy Physics - Theory · Physics 2008-11-26 Dieter Lust , Stephan Stieberger , Tomasz R. Taylor

The Large Hadron Collider promises to discover new physics beyond the Standard Model. An exciting possibility is the formation of string resonances at the TeV scale. In this article, we show how string resonances may be detected at the LHC…

High Energy Physics - Phenomenology · Physics 2009-09-02 Arunava Roy , Marco Cavaglia

We study aspects of TeV string scale models of intersecting D-branes. The gauge bosons arise from strings ending on stacks of D-branes, whereas chiral matter arises from strings stretched between intersecting D-branes. Our focus is on…

High Energy Physics - Theory · Physics 2015-08-18 Dean Carmi

In this paper I review the possibility of TeV scale strings that may be detectable by the Large Hadron Collider (LHC). This possibility was investigated extensively in a series of phenomenological papers during 1984-1985 in connection with…

High Energy Physics - Phenomenology · Physics 2010-08-16 Itzhak Bars

The LHC program will include the identification of events with single prompt high-k_\perp photons as probes of new physics. We show that this channel is uniquely suited to search for experimental evidence of TeV-scale open string theory. At…

High Energy Physics - Phenomenology · Physics 2008-11-26 Luis A. Anchordoqui , Haim Goldberg , Satoshi Nawata , Tomasz R. Taylor

We discuss the phenomenology and cosmology of a Standard-like Model inspired by string theory, in which the gauge fields are localized on D-branes wrapping certain compact cycles on an underlying geometry, whose intersection can give rise…

High Energy Physics - Phenomenology · Physics 2015-03-20 Luis A. Anchordoqui , Ignatios Antoniadis , Haim Goldberg , Xing Huang , Dieter Lust , Tomasz R. Taylor , Brian Vlcek

We construct tree-level four-particle open-string amplitudes relevant to dilepton and diphoton production at hadron colliders. We expand the amplitudes into string resonance (SR) contributions and compare the total cross-section through the…

High Energy Physics - Phenomenology · Physics 2014-11-18 Piyabut Burikham , Terrance Figy , Tao Han

We have examined the dijet production at the LHC as a hint to discovery of string Regge excitations of Standard Model particles. If the fundamental string mass scale is in the TeV range, the influence of string effects on the $pp$…

High Energy Physics - Phenomenology · Physics 2011-05-13 Zafar Usubov

We consider string realizations of the Randall-Sundrum effective theory for electroweak symmetry breaking and explore the search for the lowest massive Regge excitation of the gluon and of the extra (color singlet) gauge boson inherent of…

High Energy Physics - Phenomenology · Physics 2010-12-23 Luis A. Anchordoqui , Haim Goldberg , Xing Huang , Tomasz R. Taylor

The mass scale M_s of superstring theory is an arbitrary parameter that can be as low as few TeVs if the Universe contains large extra dimensions. We propose a search for the effects of Regge excitations of fundamental strings at LHC, in…

High Energy Physics - Phenomenology · Physics 2008-11-26 Luis A. Anchordoqui , Haim Goldberg , Satoshi Nawata , Tomasz R. Taylor

Low-scale string models are phenomenological models in String Theory, in which the string scale M_s is of the order of TeV. String excited states which are characteristic modes in low-scale string models can be observed as resonances in…

High Energy Physics - Phenomenology · Physics 2015-06-12 Manami Hashi , Noriaki Kitazawa

Low-scale string models, in which the string scale M_s is of the order of TeV with large extra dimensions, can solve the problems of scale hierarchy and non-renormalizable quantum gravity in the standard model. String excited states of the…

High Energy Physics - Phenomenology · Physics 2012-03-16 Manami Hashi , Noriaki Kitazawa

If the fundamental mass scale of superstring theory is as low as few TeVs, the massive modes of vibrating strings, Regge excitations, will be copiously produced at the Large Hadron Collider (LHC). We discuss the complementary signals of low…

High Energy Physics - Phenomenology · Physics 2015-03-17 Luis A. Anchordoqui , Wan-Zhe Feng , Haim Goldberg , Xing Huang , Tomasz R. Taylor

Generic D-brane string models of particle physics predict the existence of extra U(1) gauge symmetries beyond hypercharge. These symmetries are not of the E_6 class but rather include the gauging of Baryon and Lepton numbers as well as…

High Energy Physics - Phenomenology · Physics 2011-09-29 D. M. Ghilencea , L. E. Ibanez , N. Irges , F. Quevedo

We study Higgs production and decay from TeV scale string balls in $pp$ collisions at $\sqrt{s}$ = 14 TeV at LHC. We present the results of total cross section of diphotons, invariant mass distribution of the diphotons and $p_T$…

High Energy Physics - Phenomenology · Physics 2011-01-20 Gouranga C Nayak

The LHC diphoton excess 750 GeV is discussed in a string-inspired standard-like model. Precisely, a singlet scalar-extended SM from a vacua of four stacks of intersecting D6-branes giving rise to a large gauge symmetry is considered.…

High Energy Physics - Phenomenology · Physics 2016-06-15 Adil Belhaj , Salah-Eddine Ennadifi

In contrast to the old heterotic string case, the (weakly coupled) type I brane framework allows to have all, part or none of the standard model gauge group factors propagating in large extra--dimensions of TeV$^{-1}$ size. We investigate…

High Energy Physics - Phenomenology · Physics 2011-08-01 E. Accomando , I. Antoniadis , K. Benakli
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