Belle II @ Virginia Tech...Phase 3 readiness Jan 9-10 2019 US Belle II Science Readiness Briefing...

Leo Piilonen, PI

Belle II @ Virginia Tech

US Belle II Science Readiness Briefing Jan 9-10 2019

Group Introduction

Jan 9-10 2019 US Belle II Science Readiness Briefing – Virginia Tech 2

• Founding member of Belle and Belle II collaborations

• Physics analyses: CPV and/or New Physics in B±→ !±!+!–,B0 → ""K, B0 → K+ K– !0, B±→ KS KS {!,K}± and B0 → ℓ+ ℓ (′)–; indirect CPV in b → d #; QCD dynamics in $bJ(2P) → %&; charm CPV and strong-phase constraint from D0 → KL !0 and KS !0; NP in B±→ '±( and B±→ D(*)'±(, heavy-neutrino production, and B0 →invisible. Muon- and KL-identification algorithms.

• Lead construction, commissioning, and operation of the barrel K-long + Muon (KLM) detection subsystem in Belle and Belle II

• Belle II KLM front-end trigger, KLM HV- and run-control, KLM data-quality monitoring, KLM commissioning–run coordination

• Leo Piilonen, 100% Belle + Belle II– Belle co-spokesperson 2012–2018, Belle Publication Council chair (2018–),

Belle II Publication Committee chair (2017–), US Belle II Operations executive board member (2016– ; chair 2019–) and Level 2 manager (software, barrel KLM), Belle + Belle II authorship manager, Belle + Belle II elections manager

– Physics highlight: discovery of b→ d ! (former GS Debabrata Mohapatra)– Detector highlight: barrel KLM construction, commissioning, operation– Current DOE funding: year 2 of a four-year award (to 3/31/2021)

Faculty Summary


• Dmitri Liventsev: started in 2014– stationed full-time at KEK; employed by KEK via subcontract– Support: 50% from VT DOE grant (0% overhead) +

50% from US Belle II Operations @ PNNL/BNL– B�→ !�" and B�→ D(*)!�"; heavy-neutrino production;

B0 → invisible– Develop KLM front-end trigger; commission KLM readout;

KLM run coordinator; proxy for Technical Board meetings

• Vipin Gaur: started in 2016– splits time between VT and KEK– Support: 100% from VT DOE grant– B�→ #�#+#–, B0 → $$ K, B0 → K+ K– #0, B�→ KS KS {#,K}�– Develop and maintain HV- and run-control software + GUI;

develop barrel KLM data quality monitor software/protocols

Postdocs (100% effort on Belle and Belle II)


• Zachary Stottler: Ph.D. student (M.Sc. in 2017)– splits time between VT and KEK– Support: 67% from VT DOE grant +

33% from department teaching assistantship– !bJ(2P)→ " #– Belle II shifts at KEK; KLM expert shifter (24/7 on call at KEK),

low-momentum tracking, muon identification algorithm

• Taylor Kimmel: Ph.D. student (M.Sc. in 2017)– splits time between VT and KEK– Support: 67% from VT DOE grant +

33% from department teaching assistantship– D0 → KL $0 and KS $0

– Belle II shifts at KEK; KLM expert shifter (24/7 on call at KEK),KL-meson identification and muon identification algorithms

Students (100% effort on Belle and Belle II)


• Tommy Lam: new Ph.D. student (started fall 2018)– Initially on campus for core course-work, M.Sc. qualification– After that: support TBD: X% from VT DOE grant +

(100-X)% from department teaching assistantship– Worked on Belle II’s BEAST background-commissioning

detector as undergraduate at U. Hawaii (with Sven Vahsen)– Physics analysis to be determined– Will take Belle II shifts at KEK in 2019

Students, cont’d (100% effort on Belle and Belle II)


Belle II + SuperKEKB Phase 2 commissioning


In first collisions (April 2018), barrel KLM sees muons aligned with tracks

Muon hits inBKLM RPCs

Muonhits

Muonhits

Barrel KLM

Muonhits

Belle II + SuperKEKB Phase 2 commissioning


In May 2018, BKLM sees clear muon hits aligned with CDC tracks

Experiment 3 run 1162: e+ e– → µ+ µ–

Phase 3 readiness


After repair/refurbishing of signal and HV cables/connectors, firmware updates

Experiment 4 run 6380 (November 20): cosmic rays

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. . . More repair work will be done in January, including operation of BF2

Sector BF2 was off

Backwardoctants

Forwardoctants

Broader Impacts


• Belle II Virtual Reality app developed with $25K one-year grant from VT’s Institute for Creativity, Arts and Technology [☞ eqp’t, programmer’s salary]

• Pedagogical tool for physics education in universities and high schools; widely used for public outreach (~40 institutions so far)

• Parlayed into Belle II’s membership in the International Particle Physics Outreach Group (ippog.org) at CERN

• Presentations in 2017 at IEEE Visualization in Practice, VA Association of Science Teachers; in 2018 at HEP Software Foundation, ICHEP, CHEP

• Free on the Steam app store: store.steampowered.com/app/810020/• Try it out during the breaks!

Personnel by Fiscal Year / Grant Year


FY19(grant year #3)

FY20(grant year #4)

FY21(new grant year 1)


Piilonen 100% 100% 100% 100%Liventsev 100% 50%

Gaur 100% 100% 100% 100%Stottler 67% 67% 33%Kimmel 67% 67% 33%

Lam 67% 67% 67% 67%TBN student 0% 50% 67% 67%TBN student 0% 50% 67%TBN student 0% 50%

Engineer 0 0 0 0Technician 0 0 0 0TOTAL FTEs 5 5 4.5 4.5

Personnel location by FY


FY19(grant year #3)

FY20(grant year #4)



Piilonen VT/KEK VT/KEK VT/KEK VT/KEKLiventsev KEK KEK

Gaur KEK/VT KEK/VT KEK KEKStottler VT/KEK VT/KEK VTKimmel VT/KEK VT/KEK VT

Lam VT/KEK VT/KEK VT/KEK VT/KEKTBN student VT VT VT/KEK VT/KEKTBN student VT VT VT/KEKTBN student VT VT

Engineer – – – –Technician – – – –

• Our technical interests are maintenance and improvement of the KLM subsystem in Belle II including hardware (detector panels, HV, interlocks) and software controls/protocols, maintenance and improvement of the muon and KL-meson identification algorithms, low-momentum tracking, characterization of magnetic field in the KLM region (outside solenoid)

• Our physics interests are in CP-violation and New-Physics-sensitive decay modes of B and D mesons

• We plan to transition from 2 postdocs to 1.5 in grant year #4 (FY20) to 1 in new grant year #1 (FY21); redirect funding to graduate student support.

• We plan to have 2.5 students in steady state for the coming years. Could be 3 or 4 with additional departmental support – we have many available physics analyses for students to pursue.

Conclusion


Belle II @ Virginia Tech...Phase 3 readiness Jan 9-10 2019 US Belle II Science Readiness Briefing...

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