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Related papers: $R_D$ and $R_{D^*}$: Theoretical Development

200 papers

The semi-leptonic baryonic $b\to s$ decay, $\Lambda_b\rightarrow \Lambda \ell^+\ell^-$, has been studied and new angular observables and asymmetries have been proposed which can test the presence of new physics beyond the standard model.

High Energy Physics - Phenomenology · Physics 2015-11-04 Girish Kumar , Namit Mahajan

The recently reported measurement of the muon's anomalous magnetic moment differs from the standard model prediction by 2.6 standard deviations. We examine the implications of this discrepancy for supersymmetry. Deviations of the reported…

High Energy Physics - Phenomenology · Physics 2009-10-09 Jonathan L. Feng , Konstantin T. Matchev

Rare decays provide a complementary window to direct collider searches as probes of physics beyond the Standard Model. We present an overview of the New Physics sensitivity provided by existing and future measurements of rare leptonic and…

High Energy Physics - Phenomenology · Physics 2007-05-23 Thomas G. Rizzo

There is now strong observational evidence that the expansion of the universe is accelerating. The standard explanation invokes an unknown "dark energy" component. But such scenarios are faced with serious theoretical problems, which has…

Astrophysics · Physics 2008-11-26 Martin Kunz , Domenico Sapone

Numerous physical aspects of stellar physics have been presented in Ses- sion 2 and the underlying uncertainties have been tentatively assessed. We try here to highlight some specific points raised after the talks and during the general…

Solar and Stellar Astrophysics · Physics 2015-06-22 Arlette Noels , Angela Bragaglia

Indirect signs of new physics beyond the Standard Model may be appearing in $B \to K^{(*)}\mu^+\mu^-$ decays. If confirmed, the title question will be of paramount importance in determining the strategy for future colliders. We answer it by…

High Energy Physics - Phenomenology · Physics 2018-05-14 Tevong You

There are many exotic properties of the charmonium and charmoniumlike states above $D\bar{D}$ threshold. The recent experimental results from BaBar and Belle on the new and conventional charmonium states are reviewed in this talk.

High Energy Physics - Experiment · Physics 2012-08-21 Xiaolong Wang

The $R_{D^{(\ast)}}$ anomaly is one of the most intriguing experimental results in particle physics today. Experiments such as BaBar, Belle and LHCb have measured a consistent tension with the standard model (SM). We study several…

High Energy Physics - Phenomenology · Physics 2023-04-26 Andrés Flórez , José D. Ruiz Álvarez , Tomas Atehortua Garces

We report the latest results on CP violation measurements and the tantalizing hints of potential new physics effects obtained at the B factories.

High Energy Physics - Experiment · Physics 2010-03-09 Gagan B. Mohanty

The discrepancy between two recently reported experimental values of the gravitational constant G was analysed within a differential version of MOND theory. In contrast to the most commonly accepted interpretation of MOND theory, it is…

General Relativity and Quantum Cosmology · Physics 2016-04-14 Norbert Klein

I discuss the theoretical motivations for R-parity violation, review the experimental bounds and outline the main changes in collider phenomenology compared to conserved R-parity. I briefly comment on the effects of R-parity violation on…

High Energy Physics - Phenomenology · Physics 2009-10-30 Herbi Dreiner

New sources of CP violation beyond the Standard Model are crucial to explain the baryon asymmetry in the Universe. We discuss the impact of new CP violating interactions in theories where a dark matter candidate is predicted by the…

High Energy Physics - Phenomenology · Physics 2021-03-24 Pavel Fileviez Perez , Alexis D. Plascencia

Recent experimental bounds on rare charm decays offer a chance to improve our theoretical understanding of physics present in $c \to u \gamma$ and $c \to u l^+ l^-$ transitions. Standard Model and New Physics contributions are reviewed for…

High Energy Physics - Phenomenology · Physics 2015-09-08 Svjetlana Fajfer

A systematic study is made of the data dependence of the parameter $A_{\rm{b}}$, that, since 1995, has shown a deviation from the Standard Model prediction of between 2.4 and 3.1 standard deviations. Issues addressed include: the effect of…

High Energy Physics - Experiment · Physics 2009-10-31 J. H. Field , D. Sciarrino

Stellar evolution models are a cornerstone of young star astrophysics, which necessitates that they yield accurate and reliable predictions of stellar properties. Here, I review the current performance of stellar evolution models against…

Solar and Stellar Astrophysics · Physics 2016-02-03 Gregory A. Feiden

After a quick tour through the present status of the Standard Model, an attempt is made to set up a framework to discuss some presently available exotica, including $R_b$ and the CDF $ee\gamma\gamma+E_T\hskip-13pt/\ $ ``event."…

High Energy Physics - Phenomenology · Physics 2007-05-23 D. Nanopoulos

The theoretical predictions in the standard model (SM) and measurements on the anomalous magnetic dipole moments (MDM) of muon and electron have great precision, hence the MDMs of muon and electron have close relation with the new physics…

High Energy Physics - Phenomenology · Physics 2020-04-10 Jin-Lei Yang , Tai-Fu Feng , Hai-Bin Zhang

Supersymmetry without R-parity contains new tree-level contributions to B-decays. A brief summary is provided of the current experimental bounds on those tree-level contributions which are relevant to B physics. Signals to look for are…

High Energy Physics - Phenomenology · Physics 2008-02-03 D. Elazzar Kaplan

Discrepancies between Standard Model predictions and experimental measurements of the fractions R_c and R_b of hadronic Z decays to charm and bottom are investigated. We show that there exists a discrepancy in two complementary…

High Energy Physics - Phenomenology · Physics 2007-05-23 Isard Dunietz , Joseph Incandela , Frederick D. Snider , Kyuzo Tesima , Isamu Watanabe

This White Paper briefly reviews the present status of the muon (g-2) Standard-Model prediction. This value results in a 3 - 4 standard-deviation difference with the experimental result from Brookhaven E821. The present experimental…

High Energy Physics - Phenomenology · Physics 2013-11-12 Thomas Blum , Achim Denig , Ivan Logashenko , Eduardo de Rafael , B. Lee Roberts , Thomas Teubner , Graziano Venanzoni
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