25-29 August 2014
Schloss Waldthausen, Mainz, Germany
Europe/Berlin timezone
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Contribution List

Displaying 40 contributions out of 40
Session: Spectroscopy
Track: Heavy Quarks & Leptons
One of the most intriguing puzzles in hadron spectroscopy are the numerous charmonium-like states observed in the last decade, including charged states that are manifestly exotic. Over the years BaBar has extensively studied these states in B meson decays, initial state radiation processes and two photon reactions. We report new and additional studies on some of these states performed using t ... More
Presented by Dr. Elisabetta PRENCIPE on 25 Aug 2014 at 11:10
Session: Neutrino Physics
Track: Heavy Quarks & Leptons
Accelerator neutrino experiments using intense beams of muon neutrinos provide a well-controlled window into the new physics of the PMNS sector which expands the conventional standard model. Long-baseline experiments are providing significantly improved precision on oscillation phenomena using matter effects, appearance and disappearance channels, and neutrinos and antineutrinos. Other experime ... More
Presented by Daniel CRONIN-HENNESSY on 26 Aug 2014 at 15:15
Session: Neutrino Physics
The Sun as a well-defined neutrino source provides extremely important opportunities to investigate nontrivial neutrino properties such as nonzero mass, flavor mixing, neutrino oscillations, and MSW effect. The solar neutrino flux is energetically broadband, free of flavor backgrounds, and passes through quantities of matter obviously unavailable to terrestrial experiments. In this talk, after an ... More
Presented by Stefano DAVINI on 26 Aug 2014 at 14:50
Session: Kaon Physics
Track: Heavy Quarks & Leptons
New final results from an analysis of about 400 K+- --> pi+- gamma gamma rare decay candidates collected by the NA48/2 and NA62 experiments at CERN during low intensity runs with minimum bias trigger configurations are presented. The results include a model-independent decay rate measurement and fits to Chiral Perturbation Theory (ChPT) description. The data support the ChPT prediction for a cusp ... More
Presented by Dmitri MADIGOZHIN on 27 Aug 2014 at 09:30
Session: Closeout Session
Presented by Rainer WANKE on 29 Aug 2014 at 11:30
Session: Spectroscopy
Track: Heavy Quarks & Leptons
We perform an analysis of the D+ -> Ks pi+ pi0 Dalitz plot. The Dalitz plot is found to be well-represented by a combination of six quasi-two-body decay channels (Ks rho, Ks rho(1450), K*0bar pi+, K*0(1430)bar pi+, K(1680)bar pi+ and kapa0bar pi+) plus a small non-resonant component. Using the fractions from this analysis, partial branching ratios are updated with higher precision than previous me ... More
Presented by Peter WEIDENKAFF on 25 Aug 2014 at 12:10
Session: CP Violation
Track: Heavy Quarks & Leptons
Charmless b-hadron decays are suppressed in the Standard Model by tiny CKM matrix elements which brings the tree amplitudes to levels comparable with loop amplitudes, and potentially New Physics amplitudes. CP violation measurements using Dalitz plot analyses in multi-body decays allow to disentangle these various contributions. We report about the most recent measurements of large CP violation ef ... More
Presented by Jeremy DALSENO on 26 Aug 2014 at 11:00
Session: Neutrino Physics
on 26 Aug 2014 at 16:55
Session: Neutrino Physics
Track: Heavy Quarks & Leptons
While neutrino oscillations among the three active neutrino flavors are by now well established, several anomalies observed at relatively short baselines in oscillation experiments hint towards the existence of one or more additional sterile neutrino flavors. As a consequence, several experiments are in preparation that are dedicated to test the sterile neutrino hypothesis. The present contribut ... More
Presented by Prof. Michael WURM on 26 Aug 2014 at 17:00
Session: Spectroscopy
Track: Heavy Quarks & Leptons
After a dozen of very lively years, the spectra of heavy quarkonia below thresholds are almost complete; the last system to be explored is the Bc meson. Since few years, most discoveries happened close to open flavor thesholds, and four quark systems have attracted interest as the new spectroscopy frontier. This review will cover the unresolved questions on conventional quarkonia, the links betw ... More
Presented by Dr. Roberto MUSSA on 25 Aug 2014 at 10:00
Session: Kaon Physics
Presented by Giancarlo D'AMBROSIO on 27 Aug 2014 at 09:00
Session: New Experiments
Track: Heavy Quarks & Leptons
The LHCb experiment is designed to perform high-precision measurements of CP violation and search for New Physics using the enormous flux of beauty and charmed hadrons produced at the LHC. The operation and the results obtained from the data collected do far demonstrate that the detector is robust and functioning very well. We therefore plan for an upgraded spectrometer by 2018 with a 40 MHz reado ... More
Presented by Tomasz SZUMLAK on 29 Aug 2014 at 09:00
Session: Lepton Flavor Violation
Track: Heavy Quarks & Leptons
Recent discovery of the Higgs boson presents a new portal to the study of lepton flavor violation. Since Higgs couples to mass, LFV in heavy leptons is especially interesting. We describe recent results from a CMS search for H decay to muon and tau pair.
Presented by Nathan KELLAMS on 28 Aug 2014 at 09:30
Session: Lepton Flavor Violation
Track: Heavy Quarks & Leptons
The observation of neutrino oscillations has re-opened the case for searches of lepton-flavour violating decays. We report on recent results and prospects on lepton-flavour violating τ decays, as well as searches for short or long-lived Majorana heavy neutrinos in B→μμπ decays.
Presented by Marcin CHRZASZCZ on 28 Aug 2014 at 09:00
Session: CKM
Track: Heavy Quarks & Leptons
Based on the psi(3770) -> DDbar data accumulated at the BESIII experiment, we present studies of D0 -> K- e+ nu and D0 -> pi0 e+ nu decays which include preliminary results of B(D0 -> K- e+ nu) , B(D0 -> pi- e+ nu), as well as the partial decay rates of these decays in q^2 bins. The measured partial decay rates, in return, allow us to determine different parameterizations of the form factors. We a ... More
Presented by Daniel CRONIN-HENNESSY on 25 Aug 2014 at 16:05
Session: CP Violation
Track: Heavy Quarks & Leptons
The LHCb experiment has a great potential for precise measurements of the CP violating phase in the standard model, and for searches of new phases. We report on recent measurements of the CP violating angle angle γ which is the least constrained parameter in the CKM unitarity triangle, the phase in B mixing, and direct CP violation in B decays.
Presented by Jeremy DALSENO on 26 Aug 2014 at 11:30
Session: CP Violation
Track: Heavy Quarks & Leptons
LHCb has collected the world's largest sample of charmed hadrons. This sample is used to search for direct and indirect CP violation in charm, and to measure D0 mixing parameters. New updated measurements from several decay modes are presented, with complementary time-dependent and time-integrated analyses
Presented by Dr. Joerg MARKS on 26 Aug 2014 at 10:00
Session: Spectroscopy
Track: Heavy Quarks & Leptons
We report a new measurement of the e+e− → π π J/ψ, π π hc, ωχ cross section, the observation of e+e− → γ X(3872), and the new observation of charged particles, Zc(3900) and Zc(4020), as well as theirs neutral particle. The results are very helpful to understand the properties XYZ states
Presented by Andrzej KUPSC on 25 Aug 2014 at 09:30
Session: CP Violation
Track: Heavy Quarks & Leptons
The different amplitudes contributing to the decay of Bs into J/psi phi (mu+mu-K+K-) can be studies with a combined analysis of decay time and angular correlations. An updated analysis is presented, based on data collected in 2012 and with improved flavour tagging improving the accuracy in the CP-violating phase phi_s.
Presented by Daniel SCHEIRICH on 26 Aug 2014 at 09:30
Session: CKM
Track: Heavy Quarks & Leptons
An interesting possibility to ease the tension between various determinations of |Vub| allows a small right-handed contribution to the Standard Model weak current. The current bounds on such a contribution are fairly weak. We propose new ways to search for such a beyond Standard Model contribution in the semileptonic B -> ρ l ν decay. We suggest to use generalized asymmetries in one, two, or thr ... More
Presented by Sascha TURCZYK on 25 Aug 2014 at 14:00
Session: Neutrino Physics
Track: Heavy Quarks & Leptons
While neutrino oscillation experiments have finally provided the incontrovertible evidence that neutrinos mix and have finite masses the absolute scale and ordering of the masses of the three generations as well as charge conjugation and lepton number conservation properties are still unknown. In this scenario, a unique role is played by the Neutrinoless Double Beta Decay searches: these exper ... More
Presented by Maura PAVAN on 26 Aug 2014 at 14:00
Session: Neutrino Physics
Track: Heavy Quarks & Leptons
The Daya Bay Reactor Neutrino Experiment measures the neutrino mixing angle θ_13 with high sensitivity, using functionally identical detectors at appropriate distances from the cores of a nuclear power plant. We have analyzed 217 days of data with six detectors, and 404 days with the full complement of eight detectors, obtaining a sample of over two million ν ̄ep → e+n events. Combining rate ... More
Presented by Jim NAPOLITANO on 26 Aug 2014 at 16:35
Session: Top Quark Physics
Track: Heavy Quarks & Leptons
The top quark is the heaviest known fundamental particle. As it is the only quark that decays before it hadronizes, this gives us the unique opportunity to probe the properties of bare quarks. This talk will focus on a few recent precision measurements by the ATLAS Collaboration of the top quark: fiducial top pair and single top production cross sections including differential distributions will b ... More
Presented by Susana Patricia AMOR DOS SANTOS on 28 Aug 2014 at 11:00
Session: Kaon Physics
Track: Heavy Quarks & Leptons
Recent results and prospects for precision tests of the Standard Model in kaon decay in flight experiments at CERN are presented. A measurement of the ratio of leptonic decay rates of the charged Kaon at a 0.4% precision constrains the parameter space of new physics models with, for example, an extended Higgs sector. Searches for neutrino mass states and the dark photon in the ~100 MeV/c^2 mass ra ... More
Presented by Chris PARKINSON on 27 Aug 2014 at 12:05
Session: Kaon Physics
Track: Heavy Quarks & Leptons
The rare decays K+ ->π+ ν ν are excellent processes to make tests of new physics at the highest scale complementary to LHC thanks to their theoretically cleaness. The NA62 experiment at CERN SPS aims to collect of the order of 100 events in two years of data taking, keeping the background at the level of 10%. Part of the experimental apparatus has been commissioned during a technical run in 201 ... More
Presented by Michal KOVAL on 27 Aug 2014 at 11:40
Session: Rare Decays
Track: Heavy Quarks & Leptons
Electroweak penguin b-hadron and c-hadron decays are very sensitive to physics beyond the Standard Model. Recent LHCb measurements have shown indications of large unexpected asymmetries in B→K*μμ, hints of lepton universality violation, and the first observation of the photon polarisation in b→sγ decays. We report the most recent LHCb results in this sector.
Presented by Marcin CHRZASZCZ on 28 Aug 2014 at 10:00
Session: Neutrino Physics
Track: Heavy Quarks & Leptons
The θ13 parameter of the PMNS mixing matrix remained unknown until the first hints and estimates by both reactor and beam experiments in 2011. The most competitive limit set by the Chooz experiment let indeed open the hypothesis of a null value. A precise measurement of a non zero value enables a future observation of the CP violation and the estimate of its phase δ. The Double Chooz experiment ... More
Presented by Dr. Antoine COLLIN on 26 Aug 2014 at 16:10
Session: Kaon Physics
Track: Heavy Quarks & Leptons
The KLOE experiment at the DAΦNE φ-factory of the INFN Frascati Laboratory collected data corresponding to 2.5 fb^−1 of integrated luminosity. Neutral kaon pairs produced in φ-meson decays offer unique possibilities to perform tests of fundamental discrete symmetries. The entanglement of the two kaons is exploited to search for possible violation of CPT symmetry and Lorentz invariance in t ... More
Presented by Aleksander GAJOS on 27 Aug 2014 at 09:55
Session: Kaon Physics
Track: Heavy Quarks & Leptons
Kaon decays are a new area of interest at the LHCb experiment. A search for the decay K0S -> mu+ mu- is performed, based on a data sample of 1.0 fb^-1 of pp collisions at sqrt(s) = 7 TeV. The observed number of candidates is consistent with the background-only hypothesis, yielding an upper limit of B(K0S -> mu+ mu-) < 11 (9) x 10^-9 at 95 (90)% confidence level. This limit is a factor of thirty b ... More
Presented by Carla MARIN BENITO on 27 Aug 2014 at 10:20
Session: CKM
Track: Heavy Quarks & Leptons
Semileptonic B meson decays, B ➞ X l ν, are currently the preferred modes for determining the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements |Vcb| and |Vub|, two fundamental parameters of the Standard Model. At the same time they can also be used to test and refine the theoretical tools used for describing B mesons and their decays. Based on the large data sample accumulated by the Belle exper ... More
Presented by Jochen DINGFELDER on 25 Aug 2014 at 14:35
Session: CKM
Presented by Florian BERNLOCHNER on 25 Aug 2014 at 15:05
Session: New Experiments
Track: Heavy Quarks & Leptons
The Belle II experiment is a new generation B-factory experiment at KEK in Japan. The construction of the SuperKEKB accelerator and the Belle II detector is now in progress aiming at the commissioning in 2016. In the conference, the physics motivation of the experiment, the search for New Physics in the enormous number of B meson and other decays, is discussed in detail with a view of the se ... More
Presented by Ryosuke ITOH on 29 Aug 2014 at 11:00
Session: New Experiments
Track: Heavy Quarks & Leptons
I will explain the physics prospects of the JUNO experiment with a special emphasis on the determination of the mass hierarchy. Then I want to present the detector concept along with the ongoing R&D and our schedule.
Presented by Achim STAHL on 29 Aug 2014 at 10:00
Session: New Experiments
Track: Heavy Quarks & Leptons
The NOvA experiment, now nearing completion, is a new long-baseline neutrino experiment that will use an upgraded NuMI neutrino source at Fermilab and a 14-kton detector at Ash River, Minnesota. NOvA uses a highly active, finely segmented detector design that offers superb event identification capability, allowing precision measurements of electron (anti-)neutrino appearance and muon (anti-)neutri ... More
Presented by Daniel CRONIN-HENNESSY on 29 Aug 2014 at 09:30
Session: Neutrino Physics
Track: Heavy Quarks & Leptons
Experimental information about the neutrino masses and lepton mixing is important both for cosmology and particle physics. Cosmological observations and neutrinoless double beta decay experiments provide an indirect access to the absolute neutrino mass scale, but are model-dependent. A model independent, direct way to measure the neutrino masses is the investigation of the kinematics of single bet ... More
Presented by Florian FRÄNKLE on 26 Aug 2014 at 14:25
Session: Spectroscopy
Track: Heavy Quarks & Leptons
The production of Bc-meson has been studied by ATLAS in several exclusive channels containing a J/psi. We present results on its spectroscopy and the measurement of the B_c->J/psiD(*) decay branching ratio, including relative contribution of the different helicity amplitudes.
Presented by Pavel ŘEZNÍČEK on 25 Aug 2014 at 11:40
Session: Top Quark Physics
Track: Heavy Quarks & Leptons
I present an overview of recent measurements by the D0 experiment in the top quark sector: the forward-backward asymmetry A_FB in tt production due to higher order effects of QCD, both inclusive and differential as a function of the mass of the ttbar pair, the differential tt production cross sections, the evidence for single top quark production in the s-channel, and, to conclude, the world's mos ... More
Presented by Oleg BRANDT on 28 Aug 2014 at 12:00
Session: Kaon Physics
Track: Heavy Quarks & Leptons
Experiment E36 at the Japan Proton Accelerator Research Complex will study the decay of stopped kaons to search for new physics beyond the Standard Model. In particular, the experiment aims to provide the most stringent test of lepton universality to date in a measurement of the ratio of the Ke2 and Kmu2 decay widths, and will simultaneously search for light new particles, such as a heavy sterile ... More
Presented by Steffen STRAUCH on 27 Aug 2014 at 11:15
Session: Top Quark Physics
Track: Heavy Quarks & Leptons
Recent results on top quark properties and interactions are presented, obtained using data collected with the CMS experiment during the years 2011 and 2012 at 7 TeV and 8 TeV center-of-mass energy. Measurements are performed for the inclusive and differential top quark pair production cross sections in several top quark final states. The mass of the top quark is extracted using several methods, in ... More
Presented by Meyer ANDREAS on 28 Aug 2014 at 11:30
Session: Welcome
Presented by Rainer WANKE on 25 Aug 2014 at 09:00