New Constraints on Light Vectors Coupled to Anomalous Currents

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

New Constraints on a Light Spinless Particle Coupled to Photons

We obtain new stringent constraints on a light spinless particle φ coupled only to photons at low energies, considering its effects on the extragalactic photon background, the blackbody spectrum of the CMBR and the cosmological abundance of deuterium.

متن کامل

New constraints on very light pseudoscalars

There is quite a number of puzzling phenomena in astrophysics that could be clarified with the existence of very light scalar or pseudoscalar particles, commonly refered to as axion-like particles (a.k.a. ALPs). One of the main reasons is that these hypothetical particles can have a coupling to photons inside external magnetic fields, as in the axion case [1], and can lead to observable signatu...

متن کامل

Unitarity Constraints on Anomalous Top Quark Couplings to Weak Gauge

If there is new physics associated with the top quark, it could show up as anomalous couplings of the top quark to weak gauge bosons, such as Ztt and Wtb vector and axial-vector couplings. We use the processes tt → ZZ, tt → W+W−, and tt → ZH to obtain the unitarity constraints on these anomalous couplings, and combine these constraints with those from precision electroweak data. The unitarity c...

متن کامل

New ( g − 2 ) μ constraints on light - gravitino models

We show that the gravitino contribution to (g−2)μ is finite in many popular supergravity models, including no-scale supergravity and string and M-theory models. This contribution is greatly enhanced for very light gravitino masses, and leads to new upper bounds on the ratio of the smuon to the gravitino mass.

متن کامل

Counter-fitting Word Vectors to Linguistic Constraints

In this work, we present a novel counter-fitting method which injects antonymy and synonymy constraints into vector space representations in order to improve the vectors’ capability for judging semantic similarity. Applying this method to publicly available pre-trained word vectors leads to a new state of the art performance on the SimLex-999 dataset. We also show how the method can be used to ...

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 Letters

سال: 2017

ISSN: 0031-9007,1079-7114

DOI: 10.1103/physrevlett.119.141803