Masahiro Morii Harvard University, Department of Physics masahiro [email protected] 17 Oxford Street, Cambridge, MA 02138 (617) 495-3279

Professional Positions Chair of the Department of Physics Harvard University 2014–present Professor of Physics Harvard University 2007–present John L. Loeb Associate Professor of the Natural Sciences Harvard University 2004–2007 Assistant Professor of Physics Harvard University 2000–2004 Research Associate SLAC 1996–2000 Research Associate University of Tokyo 1992–1996

Education Ph.D. in physics University of Tokyo 1994 M.S. in physics Kyoto University 1988 B.S. in physics Kyoto University 1986

Fellowship Alfred P. Sloan Research Fellowship 2002–2003

Research

ATLAS Experiment 2006–present

ATLAS studies proton-proton collisions using the Large Collider (LHC) at CERN. Its primary goals are the origin of the electroweak symmetry breaking and New Physics beyond the Standard Model. The experiment has taken data since December 2009 at the center-of-mass energy of 7 and 8 TeV. The energy will be increased to 13 TeV in 2015. Since joining ATLAS in 2006, I have worked on mapping the magnetic field created by the air-core superconducting toroids of the spectrometer. We use data from 1,700 Hall probes located inside the field to reconstruct the geometry of the magnets’ cold mass. Together with my graduate students and postdocs, I have worked on several measurements using the 7 and 8 TeV pp collision data. My group published measurements of W -boson transverse momentum distribution [1], WZ diboson production [2], searches for weakly-produced SUSY par- ticles [3], and a search for Dark Matter production in recoil of photons [4]. In preparation for the 13 TeV run, my group is involved in searches for strongly produced SUSY particles and for Dark Matter production in recoil of jets.

LUX Experiment 2009–2011

LUX aims to detect cosmic Dark Matter using 350 kg of liquid xenon as the active target. The detector is located 4,850 feet below ground in Sanford Underground Laboratory at Homestake, SD. The first results of the LUX Experiment was published in 2014 [5]. My main contribution to LUX included design and production of the postamplifier system. 2 Masahiro Morii

BABAR Experiment 1996–present BABAR operated at the PEP-II e+e0 storage ring at SLAC from 1999 to 2008 to study the b-quark physics, in particular the CP violation in the neutral B meson decays. I joined the experiment in 1996 as a SLAC postdoc. My main responsibilities were in the construction and operation of the BABAR central drift chamber. I worked on the development and production of the readout electronics for the drift chamber, and later led the the installation and commissioning of the drift chamber. In 2000, I moved to Harvard University and became the PI of the Harvard BABAR group. I co-designed a new fast 3d tracking trigger system that allowed BABAR to take data at substantially higher beam intensities than previously possible. I lead the Harvard BABAR group for the R&D of the new trigger electronics. The upgraded trigger system was successfully deployed in 2004. As a co-convener of the Semileptonic Analysis Working Group, I coordinated the studies of the B meson semileptonic decays. My personal interest focused on the determination of the amplitude − of the CKM matrix element |Vub| using b → u` ν¯ decays. I published a measurement of the branching fraction of the exclusive B → π`ν decay in 2006 [6], and wrote a review article on the semileptonic B decays and determination of Vub [7]. In addition, the members of my group published four journal articles in 2004–2008 [8].

OPAL Experiment 1992–1996 OPAL was a general-purpose experiment running at the LEP e+e− storage ring at CERN. I joined the experiment in 1992 as a research associate with the University of Tokyo. I was the convener of the OPAL b Electroweak Working Group from 1995 to 1996. My primary achievement at OPAL ¯ was the measurement of Rb ≡ Γ(Z → bb)/Γ(Z → ) [9]. I was also in charge of the online software of the electromagnetic calorimeter system.

KEK Experiment E-162 1988–1992 KEK E-162 was a fixed-target experiment which used the KEK 12-GeV to 0 + − search for the CP-violating rare decay KL → π e e . I worked for the experiment during its construction as a graduate student of Kyoto University. I designed a 39 m2, 8000 sense-wire drift chamber system that used a fast gas to achieve a dead time of less than 50 ns. I lead the production of the chambers until the first unit was completed. Masahiro Morii 3

Teaching

I am committed to providing the best physics education to the next generation. My lectures have been consistently praised by the students, and colleagues in the Department have based their lectures on the material I have developed. I have taught the following undergraduate courses at Harvard. course title Physical Sciences 3 Electromagnetism and Waves Physics 11b Electromagnetism Physics 15b Electromagnetism Physics 15c Wave Phenomena Physics 95 Topics in Current Research Physics 145 Elementary Particle Physics Physics 151 Mechanics Physics 191r Advanced Laboratory

I developed Physical Sciences 3 with two other faculty members in spring 2007. It is a second- semester physics course for students majoring in biological sciences, and the lectures and laboratory assignments are linked to medical and biological examples.

Mentoring

I have supervised 8 postdocs:

name project year current position Stephen Bailey BABAR 2001–2004 Lawrence Berkeley National Laboratory Eunil Won BABAR 2002–2004 Korea University Jinwei Wu BABAR 2005–2006 Goldman Sachs Corrinne Mills ATLAS 2007–2013 University of Edinburgh MichalW lasenko LUX 2009–2011 International Data Corporation Bart Butler ATLAS 2012–2013 AT&T Valerio Ippolito ATLAS 2013–present Stefano Zambito ATLAS 2015–present

I have been the thesis advisor for 5 graduate students:

name project Ph.D. Kris Chaisanguanthum BABAR 2008 Benjamin Smith ATLAS 2011 Corry Lee BABAR 2011 Michael Kagan ATLAS 2012 Emma Tolley ATLAS 2017 (expected)

I also informally mentored several Harvard ATLAS graduate students. In addition, I worked with several undergraduate students on BABAR and ATLAS, many of whom went on to graduate schools including Harvard, UC Berkeley, and Stanford. 4 Masahiro Morii

Conference Presentations

• WW, WZ, and ZZ production, SM@LHC 2013, Freiburg im Breisgau, Germany, 9–12 April 20-13.

• Semileptonic B decays, invited talk, APS April Meeting 2006, Dallas, Texas, 22–25 April 2006.

• Inclusive b → u`ν and b → sγ spectra, SLAC/INT Workshop on Flavor Physics and QCD, University of Washington, 11–14 March 2005.

• Determination of |Vcb| and related results from BABAR, 8th International Workshop on Meson Production, Properties and Interaction (MESON 2004), Krakow, Poland, 4–8 June 2004.

• Measurements of sin 2α from the B factories, 5th International Conference on Hyperons, Charm and Beauty Hadrons, Vancouver, Canada, 25–29 June 2002.

• First year of BABAR/PEP-II: Measuring CP violation at an asymmetric B factory, XXXVth Rencontres de Moriond, QCD and High-Energy Hadronic Interactions, Les Arcs, Savoie, France, 18–25 March 2000.

• Heavy-quark electroweak measurements using leptons, 28th International Conference on High Energy Physics, Warsaw, Poland, 25–31 July 1996.

• New measurements of Γ(Z → b¯b)/Γ(Z → hadrons) from OPAL, XXVIIIth Rencontre de Moriond, Electroweak Interactions and Unified Theories, Les Arcs, Savoie, France, 13–20 March 1993.

Colloquia

• Search for Dark Matter, University of Tokyo, 13 February 2015.

• LUX: A Liquid Xenon Dark Matter Detector, Rutgers University, 24 August 2010.

• Searching for New Physics in CP violation with BABAR, Harvard University, 13 November 2006.

• Cracking the Unitarity Triangle, University of Arizona, 7 October 2005; MIT, 20 October 2005; Northeastern University, 3 November 2005; Tohoku University, 21 November 2005; Nagoya University, 22 November 2005; Boston University, 24 January 2006.

• B physics beyond CP violation, MIT Laboratory for Nuclear Science, 8 November 2004.

Seminars

• LUX: a liquid xenon Dark Matter detector, KEK, 24 December 2009; Harvard University, 14 April 2010.

• Semileptonic B decays, SLAC, 26 September 2006; Fermilab, 29 September 2006. Masahiro Morii 5

• B physics beyond CP violation, Harvard University, 1 November 2005; Duke University, 9 November 2005; University of Tokyo, 14 November 2005; KEK, 15 November 2005; Tsukuba University, 21 November 2005; Kyoto University, 24 November 2005; Osaka University, 25 November 2005; Carnegie Mellon University, 7 December 2005; University of Pennsylvania, 17 January 2006; Yale University, 27 February 2006; Columbia University, 29 March 2006; University of Illinois, Urbana-Champagne, 3 April 2006.

• Semileptonic B decays at BABAR, Brookhaven National Laboratory, 13 January 2005.

• Cracking the Unitarity Triangle, Indiana University, 3 October 2003.

References

[1] ATLAS Collaboration, Phys. Rev. D85, 012005 (2012).

[2] ATLAS Collaboration, Phys. Lett. B709, 341–357 (2012); ATLAS Collaboration, Eur. Phys. J. C72, 2173 (2012).

[3] ATLAS Collaboration, Phys. Lett. B718, 841–859 (2013); ATLAS Collaboration, Phys. Lett. B718, 879–901 (2013); ATLAS Collaboration, JHEP 1405, 071 (2014); ATLAS Collaboration, arXiv:1501.07110, submitted to Eur. Phys. J. C.

[4] ATLAS Collaboration, Phys. Rev. D91, 012008 (2015).

[5] LUX Collaboration, Phys. Rev. Lett. 112, 091303 (2014).

[6] BABAR Collaboration, Phys. Rev. Lett. 97, 211801 (2006).

[7] M. Morii, Mod. Phys. Lett. A20, 2183–2197 (2005).

[8] BABAR Collaboration, Phys. Rev. D70, 032006 (2004); BABAR Collaboration, Phys. Rev. Lett. 94, 041802 (2005); BABAR Collaboration, Phys. Rev. D76, 012004 (2007); BABAR Collaboration, Phys. Rev. Lett. 101, 081801 (2008).

[9] OPAL Collaboration, Z. Phys. C74, 1–17 (1997); OPAL Collaboration, Z. Phys. C65, 17–30 (1995).