We present a response to the 2018 Request for Information (RFI) from the NITRD, NCO, NSF regarding the "Update to the 2016 National Artificial Intelligence Research and Development Strategic Plan." Through this document, we provide a response to the question of whether and how the National Artificial Intelligence Research and Development Strategic Plan (NAIRDSP) should be updated from the perspective of Fermilab, America's premier national laboratory for High Energy Physics (HEP). We believe the NAIRDSP should be extended in light of the rapid pace of development and innovation in the field of Artificial Intelligence (AI) since 2016, and present our recommendations below. AI has profoundly impacted many areas of human life, promising to dramatically reshape society --- e.g., economy, education, science --- in the coming years. We are still early in this process. It is critical to invest now in this technology to ensure it is safe and deployed ethically. Science and society both have a strong need for accuracy, efficiency, transparency, and accountability in algorithms, making investments in scientific AI particularly valuable. Thus far the US has been a leader in AI technologies, and we believe as a national Laboratory it is crucial to help maintain and extend this leadership. Moreover, investments in AI will be important for maintaining US leadership in the physical sciences.

We propose an evolution of the Mu2e experiment, called Mu2e-II, that would leverage advances in detector technology and utilize the increased proton intensity provided by the Fermilab PIP-II upgrade to improve the sensitivity for neutrinoless muon-to-electron conversion by one order of magnitude beyond the Mu2e experiment, providing the deepest probe of charged lepton flavor violation in the foreseeable future. Mu2e-II will use as much of the Mu2e infrastructure as possible, providing, where required, improvements to the Mu2e apparatus to accommodate the increased beam intensity and cope with the accompanying increase in backgrounds.

We measured, with the KLOE detector, the spectrum of π+π− invariant mass in a sample of 6.7 × 105 e+e− → π+π−γ events with the photon at large polar angle (θγ > 45 ) at a centre of mass energy √ s around the φ mass. We observe in this spectrum a clear contribution from the intermediate process φ → f0(980)γ. A sizeable effect is also observed in the distribution of the pion forward-backward asymmetry. We use different theoretical models to fit the spectrum and we determine the f0 mass and coupling constants to the φ, to π +π− and to KK̄.

We present a measurement of the K-π vector current form-factor parameters for the decay KL → πeν. We use 328 pb of data collected in 2001 and 2002, corresponding to ∼ 2 million Ke3 events. Measurements of semileptonic form factors provide information about the dynamics of the strong interaction and are necessary for evaluation of the phase-space integral Ie K needed to measure the CKM matrix element |Vus| for KL → πeν decays. Our result is λ+ = (28.6 ± 0.5 ± 0.4)10 for a linear fit, and λ+ = (25.5 ± 1.5 ± 1.0)10, λ + = (1.4 ± 0.7 ± 0.4)10 for a quadratic fit. key words: ke3 form factor PACS: 13.20.Eb

We have studied the Dalitz plot of the ee → ππγ events collected at √ s ≃ Mφ with the KLOE detector. In the dipion invariant mass (Mππ) region below 700 MeV, the process under study is dominated by the non-resonant process ee → ωπ with ω → πγ whereas, for higher Mππ values, the radiative φ decay to the f0(980) is the dominant mechanism. Different theoretical models are used to fit the Dalitz plot, taking also into account a possible contribution of the σ(600). For each model, we extract the f0(980) mass and its coupling to ππ, KK and to the φ.

We have studied the Dalitz plot of the ee→ ππγ events (Nπ0π0γ ∼ 65000) collected at √ s Mφ with the KLOE detector. In the dipion invariant mass (Mππ) region below 700MeV, the process under study is dominated by the non-resonant process ee→ ωπ with ω→ πγ whereas, for higherMππ values, the radiative φ decay to the f0(980) is the dominant mechanism. Different theoretical models are used to fit the Dalitz plot, taking also into account a possible contribution of the σ(600). For each model, we extract the f0(980) mass and its coupling to ππ,KK̄ and to the φ.

The KLOE experiment at the electron-positron collider DAΦNE has recently proven the feasibility of using initial state radiation (ISR) in e+e− annihilation for precision measurements of hadronic cross section. This new method, dubbed Radiative Return, allows us to measure hadronic cross sections for energies M2(hadron) < s at particle factories which operate at fixed centre-of-mass energy s. In the recently published KLOE measurement of the pion form factor, events had been collected where the ISR photon is emitted at small polar angles, which reduces the background from final state radiation (FSR) but leads to a suppression of the threshold region M2 ππ < 0.35 GeV2. We present here a complementary analysis using events with ISR photons emitted at large polar angles. Photon tagging is possible in this case (contrary to the small photon polar angle analysis) and the threshold region becomes accessible. Preliminary results are presented, as well as a measurement of the forward-backward asymmetry, which allows a test of the FSR model used for the description of the photon radiation from pions.

The KLOE experiment has finished its data taking at the e + e - collider DAΦNE in Frascati. KLOE has collected 2.5 fb-1 at the peak of the ϕ resonance, and 250 pb-1 at [Formula: see text]. The latest experimental results based on a sample of 450 pb-1 are presented in this paper: they mainly concern the neutral and charged kaon decays, and the radiative ϕ decays into scalar and pseudoscalar mesons.

We have measured the ratio Rϕ=BR(ϕ→η′γ)/BR(ϕ→ηγ) by looking for the radiative decays ϕ→η′γ and ϕ→ηγ into the final states π+π−7γ and 7γ, respectively, in a sample of ∼1.4×109 ϕ mesons produced at the Frascati ϕ factory. We obtain Rϕ=(4.77±0.09stat±0.19syst)×10−3, from which we derive BR(ϕ→η′γ)=(6.20±0.11stat±0.25syst)×10−5. Assuming the η′ has zero gluonium content, we extract the pseudoscalar mixing angle in the quark-flavor basis, φP=(41.4±0.3stat±0.7syst±0.6th)°. Combining the value of Rϕ with other constraints, we estimate the fractional gluonium content of the η′ to be Z2=0.14±0.04 and the mixing angle to be φP=(39.7±0.7)°.

Neutral kaons provide one of the systems most sensitive to quantum mechanics and CPT violation. Models predicting quantum mechanics violation, also related to CPT violation, have been tested at the CPLEAR and KLOE experiments. In this report results of CPLEAR obtained by studying the time evolution of single and two entangled kaons are reviewed. New or improved limits on decoherence and CPT violation parameters have been obtained by KLOE studying the quantum interference in the channel ϕ→KSKL→π+π−π+π−. No deviations from the expectations of quantum mechanics and CPT symmetry have been observed.

We have studied the Dalitz plot of the e(+)e(-) -> pi(0)pi(0)gamma events (N(pi)0(pi)0 gamma similar to 65 000) collected at root s similar or equal to M-phi with the KLOE detector. In the dipion invariant mass (M-pi pi) region below 700MeV, the process under study is dominated by the non- resonant process e(+)e(-) -> omega pi(0) with omega -> pi(0)gamma whereas, for higher M-pi pi values, the radiative phi decay to the f(0)(980) is the dominant mechanism. Different theoretical models are used to fit the Dalitz plot, taking also into account a possible contribution of the sigma(600). For each model, we extract the f(0)(980) mass and its coupling to pi pi, K (K) over bar and to the phi.

We have studied the Dalitz plot of the e+e-→π0π0γ events (Nπ0π0γ∼65000) collected at \(\sqrt{s} \simeq{M}_{\phi}\) with the KLOE detector. In the dipion invariant mass (Mππ) region below 700 MeV, the process under study is dominated by the non-resonant process e+e-→ωπ0 with ω→π0γ whereas, for higher Mππ values, the radiative φ decay to the f0(980) is the dominant mechanism. Different theoretical models are used to fit the Dalitz plot, taking also into account a possible contribution of the σ(600). For each model, we extract the f0(980) mass and its coupling to ππ, KK̄ and to the φ.

The KLOE experiment at the Frascati φ factory DAΦNE collected 450 pb −1 of data during 2001– 2002 running, and is expected to have collected an additiona l 2 fb−1 by the end of this year. This report summarizes recently completed results on neutral ka on decays based on the 2001–2002 data, including branching ratio measurements for KS → 2π andKS → 3π decays, semileptonic KS decays, and the dominant KL decays; measurements of the KL lifetime; and measurements of the form-factor slopes forKe3 decays of theKL. Prospects for improvements and new results based on the 2004–2005 data are also described.

Using a sample of over 400 million phi -> KSKL decays produced during the years 2001 and 2002 at the DA Phi NE e(+)e(-) collider, the ratio R-S(pi) = Gamma(K-S -> pi(+) pi(-)(gamma))/Gamma (K-S -> pi(0)pi(0)) has been measured with the KLOE detector. The result is R-pi(S) = 2.2555 +/- 0.0012(stat)+/- 0.0021(corr-stat)+/- 0.0050(syst), which is in good agreement with the previously published result based on the KLOE data sample from the year 2000. The average of the KLOE results is R-S(pi) = 2.2549 +/- 0.0054, reducing the total error by a factor of three, to 0.25%.