Dr
Pablo Goldenzweig
(KIT)
13/03/2016 08:30
Experiment
Ordinary
The ratio of the measured $\overline{B} \to D^{(\ast)} l \overline{\nu}$ decay rates for $l=\tau$ vs. $e,\mu$ from BaBar, Belle, and LHCb together show a significant deviation from the Standard Model. Belle's 2015 result of $\overline{B} \rightarrow D^{(\ast)} \tau^{-}\overline{\nu}_{\tau}$ with hadronic tagging and the current world average will be discussed. Furthermore, Belle's preliminary...
Johannes Albrecht
(TU Dortmund)
13/03/2016 08:50
Experiment
Ordinary
During Run 1 of the LHC, the LHCb experiment has collected a large sample of beauty-hadrons that corresponds to an integrated luminosity of 3.0 fb$^{-1}$ at $pp$ centre-of-mass energy of 7 and 8 TeV. This talk gives an overview of the rare decay measurements the LHCb collaboration performed using Run 1 data, with an emphasis on Flavour Changing Neutral Current processes of the type $b...
Dr
Lars Hofer
(UB Barcelona)
13/03/2016 09:15
Theory
Ordinary
Recently, the LHC has found several anomalies in exclusive semileptonic b --> s l l decays with a combined significance of more than 4 sigma. After a brief discussion of the hadronic uncertainties entering the theoretical prediction for the relevant decays, I present an interpretation of the data in terms of new physics. Based on model-independent global fits of the effective Wilson...
Dr
Sean Benson
(CERN)
13/03/2016 09:35
Experiment
Ordinary
Latest LHCb measurements of $CP$ violation in the decays of b-hadrons are presented based on $pp$ collision data collected in Run 1, corresponding to an integrated luminosity of 1 fb$^{-1}$ at centre-of-mass energy 7 TeV and 2 fb$^{-1}$ at 8 TeV.
New decays, $\Lambda_b\to \Lambda \pi^-K^+$ and $\Lambda_b\to \Lambda K^+K^-$, are identified and the associated $CP$ asymmetries are measured. The...
M.
Alex Pearce
(University of Manchester)
13/03/2016 10:40
Experiment
Ordinary
LHCb collected the world's largest sample of open charm decays during Run 1 of
the Large Hadron Collider. This has permitted many precision measurements of
charm mixing and $CP$ violation parameters, the most precise of which being
$\Delta A_{CP}$, a measurement of the relative strength of direct,
time-integrated $CP$ asymmetries between two singly-Cabibbo suppressed $D^{0}$
decays. This...
Dr
Sandro Palestini
(CERN)
13/03/2016 11:00
Experiment
Ordinary
The study of the rare decays $B^0_s \to \mu^+\mu^-$ and $B^0 \to \mu^+\mu^-$ has been performed using 25 fb$^{-1}$ of integrated luminosity collected with the ATLAS detector during LHC Run 1. The analysis and the results are presented.
Dr
Jeroen van Tilburg
(Nikhef)
13/03/2016 17:00
Experiment
Ordinary
The LHCb experiment has collected large samples of heavy flavoured hadrons
during Run 1, corresponding to an integrated luminosity of 3.0 fb$^{-1}$ at $pp$
centre-of-mass energy of 7 and 8 TeV. Interesting results using semileptonic $B$
decays have been published, amongst which are a novel measurement of $|V_{ub}|$
and an enhanced branching ratio of semitauonic $B^0$ decays. The latter...
Dr
Malcolm John
(University of Oxford)
13/03/2016 17:20
Experiment
Ordinary
Latest results will be presented from the analysis of open charm B-decays, sensitive to the CKM angle gamma, from the Run 1 LHCb dataset.
This includes new results using the ADS, GLW and GGSZ techniques applied to B→DX decays.
The talk will conclude with a discussion on the determination of gamma from these tree-level decays, as well as the associated hadronic parameters.
Dr
Nicolas Garron
(university of Edinburgh)
13/03/2016 18:00
Dr
Giuseppe Ruggiero
(CERN)
13/03/2016 18:55
Experiment
Ordinary
The NA62 experiment at CERN SPS collected a large sample of charged kaon decays with a highly efficient trigger for decays into electrons in 2007 using the experimental setup of the earlier kaon experiment at CERN NA48/2. The kaon beam represents a source of tagged neutral pion decays in vacuum. A measurement of the electromagnetic transition form factor slope of the neutral pion in the...
Karim Massri
(University of Liverpool)
13/03/2016 19:15
Experiment
Ordinary
The NA48/2 experiment at CERN collected a large sample of charged kaon decays into final states with multiple charged particles in 2003-2004.
A new upper limit on the rate of the lepton number violating decay $K^{\pm} \rightarrow \pi^{\mp} \mu^{\pm} \mu^{\pm}$ obtained from this sample is reported: $8.6 \times 10^{-11}$ at 90% CL, which improves by more than an order of magnitude upon the...
Dr
Michele Lucente
(Centre for Cosmology, Particle Physics and Phenomenology - CP3)
13/03/2016 19:35
Theory
Ordinary
We propose a minimal and motivated extension of the Standard Model characterised by an approximated lepton number conservation, which is able both to generate neutrino masses and to account for a successful baryogenesis via leptogenesis. The sterile fermions involved in the leptogenesis process have masses at the GeV scale.
We determine the viable parameter space that complies with both the...
