Visualizing gauge unification with high-scale thresholds

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Gauge Coupling Constant Unification with Planck Scale Values of Moduli

∗ e-mail address: [email protected]. ∗∗ e-mail address: [email protected]. ∗ ∗ ∗ e-mail address: [email protected]. Convergence of the standard model gauge coupling constants to a common value at around 2× 1016 GeV is studied in the context of orbifold theories where the modular symmetry groups for T and U moduli are broken to subgroups of PSL(2, Z). The values of the moduli required...

متن کامل

Gauge Coupling Unification with Extra Dimensions and Gravitational Scale Effects

We study gauge coupling unification in the presence of extra dimensions compactified at a few TeV. Achieving unification requires a large number of gauge boson Kaluza-Klein excitations lighter than the string scale, such that the higher-dimensional gauge couplings are O(1) in string scale units. Corrections to the gauge couplings from two or more loops are about 10% or larger, hence string (or ...

متن کامل

Natural Gauge-coupling Unification at the String Scale

We argue that moduli in the adjoint representation of the standard-model gauge group are a natural feature of superstring models, and that they can account for the apparent discrepancy between the string and unification scales. NSF-ITP-95-129 CPTH-S379.1095 October 1995 An important hint in favour of supersymmetric GUTs is the unification of gauge couplings extrapolated from their low-energy ex...

متن کامل

Gauge Unification at the String Scale and Fermion Masses

In the context of the minimal supersymmetric standard model (MSSM), we discuss the introduction of exotic matter below the string scale MX in order to achieve gauge unification at MX (a constraint of a large class of string models). The possible types of exotic matter that can realise this are investigated and its effect on the top quark mass mt is presented. The implementation of a theory of f...

متن کامل

Gauge Coupling Unification, SUSY Scale and Strong Coupling Running

Abstract. The apparent unification of gauge couplings around 1016 GeV is one of the strong arguments in favor of Supersymmetric extensions of the Standard Model (SM). In this contribution two new analyses of the gauge coupling running, the latter using in contrast to previous studies not data at the Z peak but at LEP2 energies, are presented. The generic SUSY scale in the more precise novel app...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Physical Review D

سال: 2015

ISSN: 1550-7998,1550-2368

DOI: 10.1103/physrevd.91.075016