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Workshop on Pion-Kaon Interactions (PKI2018) Mini-Proceedings

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Workshop on Pion-Kaon Interactions (PKI2018) Mini-Proceedings Date: April 19, 2018 Workshop on Pion-Kaon Interactions (PKI2018) Mini-Proceedings 14th - 15th February, 2018 Thomas Jefferson National Accelerator Facility, Newport News, VA, U.S.A. M. Amaryan, M. Baalouch, G. Colangelo, J. R. de Elvira, D. Epifanov, A. Filippi, B. Grube, V. Ivanov, B. Kubis, P. M. Lo, M. Mai, V. Mathieu, S. Maurizio, C. Morningstar, B. Moussallam, F. Niecknig, B. Pal, A. Palano, J. R. Pelaez, A. Pilloni, A. Rodas, A. Rusetsky, A. Szczepaniak, and J. Stevens Editors: M. Amaryan, Ulf-G. Meißner, C. Meyer, J. Ritman, and I. Strakovsky Abstract This volume is a short summary of talks given at the PKI2018 Workshop organized to discuss current status and future prospects of π K interactions. The precise data on π interaction will − K have a strong impact on strange meson spectroscopy and form factors that are important ingredients in the Dalitz plot analysis of a decays of heavy mesons as well as precision measurement of Vus matrix element and therefore on a test of unitarity in the first raw of the CKM matrix. The workshop arXiv:1804.06528v1 [hep-ph] 18 Apr 2018 has combined the efforts of experimentalists, Lattice QCD, and phenomenology communities. Experimental data relevant to the topic of the workshop were presented from the broad range of different collaborations like CLAS, GlueX, COMPASS, BaBar, BELLE, BESIII, VEPP-2000, and LHCb. One of the main goals of this workshop was to outline a need for a new high intensity and high precision secondary KL beam facility at JLab produced with the 12 GeV electron beam of CEBAF accelerator. This workshop is a successor of the workshops Physics with Neutral Kaon Beam at JLab [1] held at JLab, February, 2016; Excited Hyperons in QCD Thermodynamics at Freeze-Out [2] held at JLab, November, 2016; New Opportunities with High-Intensity Photon Sources [3] held at CUA, February, 2017. Further details about the PKI2018 Workshop can be found on the web page of the conference: http://www.jlab.org/conferences/pki2018/ . i Contents 1 Preface 1 2 Program 3 3 Summaries of Talks5 0 3.1 Secondary KL Beam Facility at JLab for Strange Hadron Spectroscopy . .5 Moskov Amaryan 3.2 Kaon-pion Scattering from Lattice QCD . 12 Colin Morningstar 3.3 K-π Scattering with KL Beam Facility . 19 Marouen Baalouch 3.4 Dalitz Plot Analysis of Three-body Charmonium Decays at BaBar . 24 Antimo Palano 3.5 Kaon and Light-Meson Resonances at COMPASS . 32 Boris Grube 3.6 Recent Belle Results Related to π K Interactions . 38 − Bilas Pal 3.7 Study of τ Kπν Decay at the B Factories . 48 ! Denis Epifanov 3.8 From πK Amplitudes to πK Form Factors (and Back) . 55 Bachir Moussallam 3.9 Three-Body Interaction in Unitary Isobar Formalism . 62 Maxim Mai + 3.10 Study of the Processes e e− KKnπ¯ with the CMD-3 Detector at VEPP-2000 ! Collider . 71 Vyacheslav Ivanov 3.11 The GlueX Meson Program . 81 Justin Stevens 3.12 Strange Meson Spectroscopy at CLAS and CLAS12 . 84 ii Alessandra Filippi (for the CLAS Collaboration) 3.13 Dispersive Determination of the π K Scattering Lengths . 95 − Jacobo Ruiz de Elvira, Gilberto Colangelo, and Stefano Maurizio 3.14 Dispersive Analysis of Pion-kaon Scattering . 104 José R. Pelaez, Arkaitz Rodas, and Jacobo Ruiz de Elvira 3.15 Analyticity Constraints for Exotic Mesons . 112 Vincent Mathieu 3.16 Pion–Kaon Final-State Interactions in Heavy-Meson Decays . 118 Bastian Kubis and Franz Niecknig 3.17 Using π K to Understand Heavy Meson Decays . 126 Alessandro Pilloni and Adam Szczepaniak 3.18 Three Particle Dynamics on the Lattice . 134 Akaki Rusetsky 3.19 S-matrix Approach to Hadron Gas: a Brief Review . 142 Pok Man Lo 3.20 Measurement of Hadronic Cross Sections with the BaBar Detector . 149 Alessandra Filippi (for the BaBar Collaboration) 4 List of Participants of PKI2018 Workshop 159 iii 1 Preface 1. From February 14-15, 2018, the Thomas Jefferson Laboratory in Newport News, Virginia hosted the PKI2018, an international workshop to explore the physics potential to investigate π-K interactions. This was the fourth of a series of workshops held to establish a neutral kaon beam facility at JLab Hall D with a neutral kaon flux which will be three orders of magnitude higher than was available at SLAC. This facility will enable scattering experiments of KL off both proton and neutron (for the first time) targets in order to measure differential cross section distributions with the GlueX detector. The combination of data from this facility with the self-analyzing power of strange hyperons will enable precise partial-wave analyses (PWA) in order to determine dozens of predicted Λ∗, Σ∗, Ξ∗, and Ω∗ resonances up to 2.5 GeV. Furthermore, the KLF will enable strange meson spectroscopy by studies of the π-K interaction to locate pole positions in the I = 1/2 and 3/2 channels. Detailed study of π-K system with PWA will allow to observe and measure quantum numbers of missing kaon states, which in turn will also impact Dalitz plot analyses of heavy meson decays, as well as tau-lepton decay the with π-K in the final state. The program of the workshop had special emphasis on topics connected to the proposed KLF experiments. A detailed description of the workshop, including the scientific program, can be found on the workshop web page, https://www.jlab.org/conferences/pki2018/. The talks presented at this workshop were grouped into the following categories: (a) The KL Facility at JLab, (b) Lattice QCD approaches to π-K interactions, (c) Results from Chiral Effective Theories (d) Results from Dispersion Relations (e) π-K formfactor and heavy meson and tau decay (f) Hadron Spectroscopy at GlueX, CLAS, CLAS12, BaBar, and COMPASS 2. Acknowledgments The workshop would not have been possible without dedicated work of many people. First, we would like to thank the service group and the staff of JLab for all their efforts. We would like to thank JLab management, especially Robert McKeown for their help and en- couragement to organize this workshop. Financial support was provided by the JLab, Jülich Forschungszentrum, The George Washington and Old Dominion universities. Newport News, March 2018. 1 References [1] M. Amaryan, Ulf-G. Meißner, C. Meyer, J. Ritman, and I. Strakovsky, eds., Mini- Proceedings, Workshop on Physics with Neutral Kaon Beam at JLab (KL2016); arXiv:1604.02141 [hep–ph]. M. Amaryan, E. Chudakov, K. Rajagopal, C. Ratti, J. Rit- man, and I. Strakovsky, eds., Mini-Proceedings, Workshop on Excited Hyperons in QCD Thermodynamics at Freeze-Out (YSTAR2016); arXiv:1701.07346 [hep–ph]. [2] M. Amaryan, E. Chudakov, K. Rajagopal, C. Ratti, J. Ritman, and I. Strakovsky, eds., Mini- Proceedings, Workshop on Excited Hyperons in QCD Thermodynamics at Freeze-Out (YS- TAR2016); arXiv:1701.07346 [hep–ph]. [3] T. Horn, C. Keppel, C. Munoz-Camacho, and I. Strakovsky, eds., Mini-Proceedings, Work- shop on High-Intensity Photon Sources (HIPS2017); arXiv:1704.00816 [nucl–ex]. 2 2 Program Wednesday, February 14, 2018 8:15am - 8:45am: Registration and coffee Session 1: Chair: Rolf Ent / Secretary: Stuart Fegan 8:45am - 9:00am: Welcome and Introductory Remarks – Jianwei Qiu (JLab) 9:00am - 9:25am: KL Facility at JLab – Moskov Amaryan (ODU) 9:25am - 9:50am: Kaon-pion scattering from lattice QCD – Colin Morningstar (CMU) 9:50am -10:15am: Study of k π interaction with KLF – Marouen Baalouch (ODU) − 10:15am -10:45am: Coffee break Session 2: Chair: Eugene Chudakov / Secretary: Chan Kim 10:45am -11:15am: Dalitz plot analysis of three-body charmonium decays at BaBar – Antimo Palano (INFN/Bari U.) 11:15am -11:45am: Kaon and light-meson resonances at COMPASS – Boris Grube (TUM) 11:45am -12:15pm: Recent Belle results related to pion-kaon interactions – Bilas Pal (Cincinnati U.) 12:15pm - 2:00pm: Conference Photo & Lunch break - on your own Session 3: Chair: Curtis Meyer / Secretary: Torry Roak 2:00pm - 2:25pm: Study of τ Kπν decay at the B factories – Denis Epifanov (BINP, NSU) ! 2:25pm - 2:50pm: From π K amplitudes to π K form factors and back – Bachir Moussallam − − (Paris-Sud U.) 2:50pm - 3:15pm: Three-body interactions in isobar formalism Maxim Mai (GW) + 3:15pm - 3:40pm: Study of the processes e e− KKnπ¯ with the CMD-3 detector at VEPP-2000 ! collider – Vyacheslav Ivanov (BINP) 3:40pm - 4:10pm: Coffee break Session 4: Chair: Charles Hyde / Secretary: Tyler Viducic 4:10pm - 4:35pm: The GlueX Meson Program – Justin Stevens (W&M) 4:35pm - 5:00pm: Strange meson spectroscopy at CLAS and CLAS12 – Alessandra Filippi (INFN Torino) 5:00pm - 5:25pm: Non-leptonic charmless three body decays at LHCb – Rafael Silva Coutinho (Zuerich U.) 3 5:25pm- 5:50pm: Dispersive determination of the π K scattering lengths – Jacobo Ruiz de Elvira − (Bern U.) 5:50pm: Adjourn 6:10pm: Networking Reception - CEBAF Center Lobby Thursday, February 15, 2018 8:15am - 8:45am: Coffee Session 5: Chair: David Richards / Secretary: Will Phelps 8:45am - 9:15am: Meson-meson scattering from lattice QCD – Jo Dudek (W&M) 9:15am - 9:45am: Dispersive analysis of pion-kaon scattering – Jose R. Pelaez (U. Complutense de Madrid) 9:45am -10:15am: Analyticity Constraints for Exotic Mesons – Vincent Mathieu (JLab) 10:15am -10:55am: Coffee break Session 6: Chair: Jacobo Ruiz / Secretary: Wenliang Li 10:55am -11:25am: Pion-kaon scattering in the final-state interactions of heavy-meson decays – Bastian Kubis (Bonn U.) 11:25am -11:55am: Using πK to understand heavy meson decays – Alessandro Pilloni (JLab) 11:55am -12:25pm: Three particle dynamics on the lattice – Akaki Rusetsky (Bonn U.) 12:25pm - 2:00pm: Lunch break - on your own Session 7: Chair: James Ritman / Secretary: Amy Schertz 2:00pm - 2:30pm: S-matrix approach to the thermodynamics of hadrons – Pok Man Lo (Wroclaw U.) 2:30pm - 3:00pm: Measurement of hadronic cross sections with the BaBar detector – Alessandra Filippi (INFN Torino) 3:00pm - 3:30pm: A determination of the pion-kion scattering length from 2+1 flavor lattice QCD – Daniel Mohler (Helmholtz-Inst.
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