Prof.
Stephen Lanier
(Vice President for Research, Wayne State University)
5/18/15, 9:00 AM
Dr
Fulvio Piccinini
(istituto nazionale di fisica nucleare, sezione di Pavia)
5/18/15, 9:30 AM
Prof.
Sasa Prelovsek
(University of Ljubljana)
5/18/15, 10:00 AM
Dr
Xiaolong Wang
(Virginia Tech)
5/18/15, 10:30 AM
Studies of many charmonium(-like) states including exotic candidates performed at Belle experiment are presented. Besides the candidates of conventional charmonium states, more and more charged charmonium-like states are found. The charged charmonium-like states look like forming a new spectroscopy.
Dr
Mihajlo Kornicer
(University of Hawaii)
5/18/15, 11:00 AM
Prof.
Antimo Palano
(INFN and University of Bari, Italy)
5/18/15, 11:30 AM
We study the reaction e+ e− -> gamma_ISR J/psi, where J/psi -> pi+ pi- pi0 and J/psi -> K+ K- pi0, using events obtained from the Initial State Radiation process. We measure the relative J/psi branching fraction and perform a Dalitz plot analysis of both J/psi decay modes using the isobar and Veneziano model.
We study the process gamma gamma -> K anti-K pi. We observe the decays eta_c ->...
Prof.
Antimo Palano
(INFN and University of Bari, Italy)
5/18/15, 1:30 PM
Dr
Daniel Mohler
(Fermilab)
5/18/15, 2:00 PM
Prof.
Richard Lebed
(Arizona State University)
5/18/15, 2:30 PM
I introduce an entirely new dynamical description for tetraquark mesons, based upon the competing effects of the strong attraction between quarks in a diquark, and the inability of the diquark to hadronize on its own due to being a color nonsinglet. This mechanism naturally explains, for example, the strong preference of the Z(4475) to decay to psi(2S) rather than the J/psi, the existence of...
Dr
Geoffrey Bodwin
(Argonne National Laboratory)
5/18/15, 3:30 PM
Prof.
Michael Sokoloff
(University of Cincinnati)
5/18/15, 4:00 PM
In a e+e- B factory charmonium states can be produced through different mechanisms, as in e+e- annihilation, with double charmonium production, and in B-meson decays.
Prompt production of J/psi or psi(2S) in association with a second charmonium state has been observed by both the BaBar and Belle experiments in e+e- annihilation at a center-of-mass energy of 10.58 GeV. These processes...
Dr
Kai Yi
(University of Iowa)
5/18/15, 4:20 PM
Precise measurement of S-wave quarkonium cross-sections and polarizations performed at LHC helped clarifying the experimental scenario in the field of quarkonium production. From the theoretical point of view, the most promising framework to explain such phenomena has been, for almost 20 years, NRQCD. However, the interpretation of the latest results in this framework is not straight-forward,...
Dr
Bruce Yabsley
(University of Sydney)
5/18/15, 4:40 PM
We present detailed precision measurements of the prompt and
non-prompt differential production cross sections for the J/psi,
psi2s, chi_c and X(3872) charmonium states at sqrt(s)=8 TeV, covering J/psi and psi2s --> mumu, psi2s-->J/psi pipi and chi_c. The results are compared with leading theoretical models.
Dr
Anthony Frawley
(Florida State University)
5/19/15, 8:30 AM
Prof.
Jianwei Qiu
(Brookhaven National Laboratory)
5/19/15, 9:00 AM
Andrea Dainese
(INFN - Padova, Italy)
5/19/15, 9:30 AM
Marlene Nahrgang
(Duke University)
5/19/15, 10:00 AM
Prof.
Svjetlana Fajfer
(University of Ljubljana and J. Stefan Institute)
5/19/15, 11:00 AM
Prof.
Carla Göbel
(PUC-Rio)
5/19/15, 11:30 AM
Prof.
Jure Zupan
(University of Cincinnati)
5/19/15, 12:00 PM
Ramona Vogt
(LLNL and UC Davis)
5/19/15, 2:00 PM
Dr
Rong-Gang Ping
(Institute of High Energy Physics, CAS)
5/19/15, 2:00 PM
The BESIII Experiment at the Beijing Electron Positron Collider (BEPC2) has accumulated the world's largest samples of e+e- collisions in the tau-charm region. From these samples -- which include J/psi, psi(2S), and psi(3770) decays, among others -- BESIII has produced many new results in the spectroscopy, transitions, and decays of charmonium. This talk will review the current status of...
Sarah LaPointe
(INFN Torino)
5/19/15, 2:20 PM
The ALICE detector is dedicated to the study of the high energy-density QCD matter produced in heavy-ion collisions. Important probes of this matter are heavy quarks (charm and beauty), as they are produced in the early stage of the collision via initial hard scatterings. Thus measurements of their production offer important information on the early stage of the collision and the parton-medium...
Mr
Zhao Feng
(Central China Normal University)
5/19/15, 2:40 PM
In relativistic heavy-ion collisions, J/ψ can be produced via different mechanisms and the large mass of the charm quark makes it a valuable probe to the thermalization of the medium. The study of J/ψ azimuthal anisotropy can allow for the disentangling of a few interesting dynamic processes, e.g., J/ψ produced from direct pQCD processes, and J/ψ produced from recombination of charm quarks...
Dr
fabio anulli
(INFN Sezione di Roma)
5/19/15, 2:40 PM
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 on recent studies on some of these states performed using the...
Dr
Alexandre Lebedev
(Iowa State University)
5/19/15, 3:00 PM
The measurement of quarkonia production in relativistic heavy ion
collisions provides a powerful tool for studying the properties of
the hot and dense matter created in these collisions.
To be really useful, however, such measurements must cover a wide
range of quarkonia states and colliding species.
The PHENIX experiment at RHIC has successfully measured J/psi, psi-prime,
chi_c and...
Dr
Alexey Luchinsky
(IHEP, Protvino)
5/19/15, 3:00 PM
The talk is devoted to theoretical description of J/psi Upsilon production at LHC. This process is interesting since at LO color-singlet approximation it is forbidden, so investigation of this reaction allows one to probe alternative mechanisms, such as color-octet production, double parton scattering, etc.
Dr
Hong Zhang
(The Ohio State University)
5/19/15, 3:20 PM
From the Tevatron and the LHC data, it is clear that current models for the heavy quarkonium production are not able to explain the polarization of heavy quarkonia produced at large transverse momentum pT in p-p collision. A new approach to evaluate the heavy quarkonium production, by expanding the cross section in powers of 1/pT before the expansion in powers of alpha_s, was proposed...
Chiara Bianchin
(Wayne State University)
5/19/15, 3:20 PM
The ALICE experiment at the LHC studies Pb-Pb, p-Pb, and pp collisions to investigate the properties of the high energy-density state of strongly-interacting matter, produced in Pb-Pb collisions, the so-called quark-gluon plasma (QGP).
Heavy quarks (charm and beauty) are unique probes, since they are produced in the initial hard scattering processes in the earliest phase of the collisions and...
Mr
HAIWANG YU
(Peking University)
5/19/15, 4:00 PM
The polarized gluon distribution, as described by the polarized parton distribution function $\Delta g(x)$, is an important part of the spin structure of the nucleon; however the current data have very limited constraints on $\Delta g(x)$ for $x < 0.01$. During the 2013 RHIC run, the PHENIX experiment collected 146 pb$^{-1}$ of longitudinally polarized $p+p$ data at $\sqrt{s} = 510$ GeV with...
Dr
Raquel Molina
(The George Washington University)
5/19/15, 4:00 PM
We develop a method to determine accurately the binding energy of the X(3872) from lattice data for the $D\bar{D}^*$ interaction. We show that, because of the small difference between the neutral and charged components of the X(3872), it is necessary to differentiate them in the energy levels of the lattice spectrum if one wishes to have a precise determination of the the binding energy of the...
Zhengkang Zhang
(Michigan Center for Theoretical Physics, University of Michigan)
5/19/15, 4:20 PM
Masses of the charm and bottom quarks are important inputs to precision calculations of Higgs boson observables, such as its partial widths and branching fractions. They constitute a major source of theory uncertainties that needs to be better understood and reduced in light of future high-precision measurements. Conventionally, Higgs boson observables are calculated in terms of $m_c$ and...
Dr
Vindhyawasini Prasad
(Post-doctoral Fellow)
5/19/15, 4:20 PM
The BESIII Experiment at the Beijing Electron Positron Collider (BEPC2) collected large data samples for electron-positron collisions with center-of-mass above 4 GeV during 2013 and 2014. In this mass region, there are several states that are yet to be understood. In this talk we will discuss BESIII analyses of radiative transitions among these states, which may improve our understanding of...
Nejc Košnik
(Department of Physics, University of Ljubljana)
5/19/15, 4:40 PM
We speculate about the possible interpretations of the recently observed excess in the h to tau mu decay. We derive a robust lower bound on the Higgs boson coupling strength to a tau and a muon, even in presence of the most general new physics affecting other Higgs properties. Then we reevaluate complementary indirect constraints coming from low energy observables as well as from theoretical...
Mr
Angelo Esposito
(Columbia University)
5/19/15, 4:40 PM
The nature of the so-called XYZ states is a long-standing problem. It has been suggested that such particles may be described as compact four-quark states or loosely bound meson molecules. In the present work we analyze the Z_c^(') -> eta_c rho decay using both approaches. Such channel might provide useful insights on the nature of the Z_c^('), helping discriminating between the two different models.
Mr
Ayan Paul
(INFN, Sezione di Roma)
5/19/15, 5:00 PM
The question of the validity of analyzing charmed meson decays to pairs of hadrons within the SU(3) framework has been long and often debated. While there are convincing arguments that small breaking of this symmetry can accommodate for the current experimental results, the inability to compute QCD effects in these modes render it quite impossible to justify with complete authority the...
Dr
Zhenbin Wu
(Baylor University)
5/19/15, 5:00 PM
The supersymmetric partner of the top quark, the stop, is among the best candidates for stabilizing the Higgs mass against large radiative corrections. In the scenario where the dark matter candidate is close in mass to the stop, the decay stop -> charm, LSP is an important search channel. This talk describes the application of a monojet search topology to hunt for this decay with the CMS...
Dr
Marco Gersabeck
(The University of Manchester)
5/19/15, 5:20 PM
LHCb has collected the world's largest sample of charmed hadrons. This sample is used to search for direct CP violation in charm. New updated measurements from several decay modes, including DeltaACP from D0->hh decays, are presented. The talk also focuses on measurements of production and detection asymmetries.
Dr
Vindhyawasini Prasad
(Post-doctoral Fellow)
5/19/15, 5:20 PM
We search for di-muon decays a light Higgs boson ($A^0$) in the radiative decay of $J/\psi$: $J/\psi \rightarrow \gamma A^0$, $A^0 \rightarrow \mu^+\mu^-$. Here $A^0$ is the hypothetical CP-odd light Higgs boson predicted by many extensions of the Standard Model (SM), including Next-to-Minimal Sypersymmetric Standard Model (NMSSM). This study is based on 225 million $J/\psi$ events collected...
Prof.
Michael Sokoloff
(University of Cincinnati)
5/19/15, 5:40 PM
The LHCb High Level Trigger uses two stages of software running on an Event Filter Farm (EFF) to select events for offline reconstruction and analysis. In LHC runs 1 & 2 the first stage (Hlt1) processes approximately 1 MHz of events accepted by a hardware trigger. In 2012, the second stage (Hlt2) wrote 5 kHz to permanent storage for later processing. Following the LHC's Long Stop 1, the...
Prof.
Jim Libby
(Indian Institute of Technology Madras)
5/19/15, 5:40 PM
Quantum-correlated psi(3770) to DDbar decays collected by the CLEO-c experiment are used to perform first measurements of F+, the fractional CP-even content of the self-conjugate decays D->pi+pi−pi0 and D->K+K−pi0. Values of 0.968±0.017±0.006 and 0.731±0.058±0.021 are obtained for pi+pi−pi0 and K+K−pi0, respectively. It is demonstrated how modes of this sort can be cleanly included in...
Dr
Sneha Malde
(University of Oxford)
5/19/15, 6:00 PM
A first measurement of F+, the CP-even content of the decay D--> 4pi using quantum correlated psi(3770) to DDbar decays collected by the CLEO-c experiment is presented. A high value is obtained, which makes the decay mode particularly suitable for both measurements of the CKM angle \gamma and charm CP violation in a model independent way.
This novel approach to studying indirect CP violation...
Jane Nachtman
(University of Iowa)
5/19/15, 6:00 PM
CMS has accumulated large amount of dimuon events at 7 and 8 TeV center-mass-energy. Fruitful results have been produced using these datasets. This talk will cover the observation of two structures in jpsi+phi mass spectrum via exclusive B+-> jpsi phi K+ decays, while the first one confirms a previous observation from CDF experiment, and the second one has been observed for the first time. A...
Dr
Mark Whitehead
(University of Warwick)
5/20/15, 8:30 AM
Excited charm states are studied at LHCb both in the pp collision and in decays of B hadrons. The latter method has the advantage of starting from a clean and well defined initial state with known quantum numbers. LHCb presents the observation of new spin-3 mesons decaying to D(*)K and Dπ, as well as many measurements of mass, width and spin of already known mesons.
Ms
Fenfen An
(Institute of High Energy Physics)
5/20/15, 8:30 AM
Mr
Wai Kin Lai
(University of Pittsburgh)
5/20/15, 8:50 AM
The asymmetry in the forward region production cross section of D± is calculated using the heavy quark recombination mechanism for pp collisions at 7 TeV. By suitable choices of four
nonperturbative parameters, our calculated results can reproduce those obtained at LHCb. We
find A p ∼ −1% when integrated over 2.0 GeV < p T < 18 GeV and 2.2 < η < 4.75, which agrees
with A p = −0.96 ± 0.26 ±...
Arantza Oyanguren
(IFIC-UV-CSIC)
5/20/15, 8:50 AM
Precision measurements of the D -> pi e+ nu form factor could shed new light on the persistent difference between inclusive and exclusive measurements of Vub. We report the measurement of the partial branching fraction of D -> pi e+ nu in bins of the four-momentum transfer squared of the D to pi system using 347.2 /fb of integrated luminosity of the BaBar data. The D -> pi form factor is...
Ms
Claudia Vacca
(Università degli Studi di Cagliari-INFN Cagliari)
5/20/15, 9:10 AM
Following the intriguing hints of deviations from the Standard Model in rare B meson decays, searches for rare and forbidden decays of charm hadrons become a hot topic again. We present recent results on penguin D→μμhh' and lepton-flavour violating D→eμ decays.
These results are presented on behalf of the LHCb collaboration.
Stefan de Boer
(TU Dortmund)
5/20/15, 9:30 AM
We present a study of c → ull transitions.
In the Standard Model these semileptonic charm decays are induced via Flavor Changing Neutral Currents and, thus are rare.
This opens possibilities for potential Beyond Standard Model physics searches.
We estimate phenomenological observables within the SM and effects due to BSM physics.
Dr
Jonathan Harrison
(University of Manchester)
5/20/15, 9:30 AM
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.
Dr
Minggang Zhao
(Nankai University)
5/20/15, 9:50 AM
Based on the sample taken at sqrt(s) = 3.773 GeV with 2.92/pb, which corresponds to the largest sample of e+e- -> psi(3770) in the world to date, we present our results of searches for flavor changing neutral curent and lepton number violation decays of the charged D meson in the final states of; D+ -> K+ e+ -, K- e+ e+, pi+ e+ e-, pi-e+ e+, as well as other searches such as for D0 -> gamma gamma.
Ms
Anna Vinokurova
(Budker Institute of Nuclear Physics)
5/20/15, 9:50 AM
We report a search for B decays to selected final states with the eta_c meson: B -> K eta_c pi+ pi-, B -> K eta_c omega, B -> K eta_c eta and B -> K eta_c pi0. The analysis is based on 772 millions of BB pairs collected at the Upsilon (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We set 90% confidence level upper limits on the branching fractions of the...
Tara Nanut
(Jozef Stefan Institute)
5/20/15, 10:30 AM
Vishal Bhardwaj
(University of South Carolina)
5/20/15, 10:30 AM
In spite of the fact that the two-body $B$ decays into $\chi_{c2}$ such as $B \to \chi_{c2} K^{(*)}$ are suppressed by the QCD factorization effect, the inclusive $B \to \chi_{c2} X$ branching fraction amounts to one third of the non-suppressed $B \to \chi_{c1} X$ decays because of the decay modes to the multi-body final states. Using a large statistics $\Upsilon(4S)$ data sample corresponding...
Peter Weidenkaff
(JGU)
5/20/15, 10:50 AM
Based on 2.92 fb$^{-1}$ of $e^+e^-$ collision data taken at $\sqrt{s}$ = 3.773 GeV with the BESIII detector at BEPCII, we present preliminary results from the analysis of the decay $D^0 \to K_S^0 K^+ K^-$. We measure the branching fraction and investigate the rich substructure in the final state by performing a Dalitz plot analysis.
Prof.
Milind Purohit
(University of South Carolina)
5/20/15, 10:50 AM
We present Dalitz plot analyses for the decays of B mesons to D- D0 K+ and D0-bar D0 K+. We report the observation of the D_{s1}^* (2700)^+ resonance in these two channels and obtain measurements of the mass
M(D^*_{s1}(2700)^+) = 2699^{+14}_{−} MeV/c^2 and of the width
Γ(D^*_{s1}(2700)^+) = 127^{+24}_{−1} MeV, including statistical and
systematic uncertainties. In addition, we observe an...
Albayrak Onur
(Carnegie Mellon University)
5/20/15, 11:10 AM
We report the measurement of the D0-D0bar mixing parameter, y_{CP} based on the sample taken at the DDbar mass threshold. Based on the events where we reconstruct one D decays to CP eigenstates while the other D decays semi-leptonially, we obtain y_{CP} = (-2.0+-1.3+-0.7)%. We also present results for model independent measurement of the strong phase difference between D0 and D0bar -> K0 pi+...
Mr
Vishal Bhardwaj
(University of South Carolina (Belle Collaboration))
5/20/15, 11:10 AM
We report the first observation of $B^0 \to X(3872) (K^{+}\pi^{-})$ and evidence for $B^+ \to X(3872) (K^{0}\pi^{+})$. We measure the product of branching fractions for the former to be ${\cal B}(B^0 \to X(3872) (K^+ \pi^-)) \times {\cal B}(X(3872) \to J/\psi \pi^+ \pi^-) = (7.9 \pm 1.3(\mbox{stat.})\pm 0.4(\mbox{syst.})) \times 10^{-6}$ and find that $B^{0}\to X(3872) K^{*}(892)^{0}$ does...
Dr
Fu-Sheng Yu
(Lanzhou University)
5/20/15, 11:30 AM
I will show an exclusive approach on calculating the DDbar mixing parameters y and x. We will sum up the contributions from the hadronic decays, based on the factorization-assisted topological-amplitude approach in which most SU(3) breaking effects are involved.
Mr
Ayan Paul
(INFN, Sezione di Roma)
5/20/15, 11:30 AM
The rare semileptonic Bd → K∗l+i− decay has been extensively studied within the Standard Model and beyond. Significant efforts from Lattice QCD groups have reduced theoretical errors in the form-factors to tractable limits in the high q^2 regime while arguments from LCSR can be used for the same in the low q^2 regime. However, hadronic contributions coming primarily from charm loops still...
Rui Wang
(Argonne national laboratory)
5/20/15, 11:50 AM
We present latest results from the ATLAS experiment on B_c
spectroscopy, including branching fraction measurements of Bc+->
J/psipi and Bc->J/psiDs(*) and observation of the B_c(2S) state.
Ms
Stefanie Reichert
(The University of Manchester)
5/20/15, 11:50 AM
LHCb has collected the world's largest sample of charmed hadrons. This sample is used to search for indirect CP violation in charm, and to measure D0 mixing parameters. New measurements from several decay modes are presented.
Dr
Maurizio Martinelli
(École Polytechnique Fédérale de Lausanne)
5/20/15, 12:10 PM
The study of T-odd observables using four-body hadronic final states of charm meson decays provides complementary insight to measuring CP asymmetries via decay rate asymmetries. New results based on the full LHCb dataset are presented.
Prof.
Alexander Kagan
(University of Cincinnati)
5/21/15, 8:30 AM
Dr
Stefan Schacht
(Karlsruhe Institute of Technology)
5/21/15, 9:00 AM
We present recent results on improved predictions for charm CP violation in nonleptonic decays. These are obtained from a fit of a diagrammatic parametrization to branching ratios including linear SU(3)F breaking. The predictions make possible future tests of the Standard Model once improved data is available.
Dr
Sabato Leo
(University of Illinois at Urbana Champaign)
5/21/15, 9:30 AM
Dr
Adrian Bevan
(Queen Mary University of London)
5/21/15, 10:00 AM
Dr
Paras Naik
(University of Bristol)
5/21/15, 11:00 AM
Mr
Alessandro Pilloni
(Sapienza U.)
5/21/15, 11:30 AM
The status of CP violations in charm sector is still unsettled.
According to SM, the predicted asymmetries are small, but often affected by large uncertainties due to long-distance effects. However, it is possible to build observables which SM predicts to be CP conserving, so that any measured asymmetry is, with no doubts, a sign of New Physics.
We present recent results on charm CP...
Prof.
Frank Petriello
(University of Wisconsin)
5/21/15, 1:30 PM
Dr
Bruce Yabsley
(University of Sydney)
5/21/15, 2:00 PM
We present new measurements of the production of a charmonium state in
association with a W boson, Z boson, or another charmonium state (covering
diJpsi, Z+J/psi, W+J/psi).
These rare production modes provide novel insight into the mechanisms
of charmonium production and the impact of proton structure on these
observables.
Dr
Hajime Muramatsu
(U. of Minnesota)
5/21/15, 2:30 PM
Stephen Ogilvy
(University of Glasgow)
5/21/15, 4:00 PM
Dr
Andrew Lytle
(University of Glasgow)
5/22/15, 8:30 AM
Dr
Vicent Mateu
(University of Vienna)
5/22/15, 9:00 AM
Dr
Elvira Gamiz
(Fermilab)
5/22/15, 9:30 AM
Prof.
Simon Eidelman
(BINP)
5/22/15, 10:00 AM
We describe recent developments in experimental studies of D and Ds meson leptonic decays at the BaBar, Belle, BESIII and CLEO-c detectors and their implications for the determination of charm meson decay constants as well as searches for charged Higgs. Also discussed are semileptonic decays of D and Ds mesons and their relevance to hadronic form factors.
Dr
Hailong Ma
(Institue of High Energy Physics, CAS, China)
5/22/15, 10:30 AM
The BESIII experiment has taken 2.92/fb of data at sqrt(s) = 3.773 GeV which contains the largest sample of e+e- -> psi(3770) -> DDbar in the world to date. We report the result of our branching fraction measurement of D+ -> mu+ nu based on this sample from which we extract its weak decay constant, f_D+, with the|Vcd| determined from a global Standard Model fit as an input. We also obtain...
Prof.
Simon Eidelman
(BINP)
5/22/15, 11:30 AM
We present the concept design of Novosibirsk tau-charm factory: physics case, detector and machine. Status of its construction is discussed. Also briefly described is a similar project currently discussed at the University of Science and Technology of China (USTC) in Hefei.
Prof.
Yangheng Zheng
(University of Chinese Academy of Sciences)
5/22/15, 12:00 PM
Prof.
Chris Parkes
(University of Manchester)
5/22/15, 2:00 PM
Prof.
Marko Staric
(J. Stefan Institute)
5/22/15, 2:30 PM
Mr
Angelo Carbone
(INFN and University of Bologna)
5/22/15, 3:00 PM
CMS experiment CMS experiment
(CMS experiment)
A search for a Higgs boson decaying into two photons, one of which has an internal conversion to a muon or an electron pair will be described. Events are required have an opposite-sign muon or electron pair and a high transverse momentum photon. Additionally, upper limits on the branching fraction of a Higgs boson decays to a Jpsi and a photon will be reported.