SuperB is a high luminosity e + e − collider that will be able to indirectly probe new physics at energy scales far beyond the reach of any man made accelerator planned or in existence. Just as detailed understanding of the Standard Model of particle physics was developed from stringent constraints imposed by flavour changing processes between quarks, the detailed structure of any new physics is severely constrained by flavour processes. In order to elucidate this structure it is necessary to perform a number of complementary studies of a set of golden channels. With these measurements in hand, the pattern of deviations from the Standard Model behavior can be used as a test of the structure of new physics. If new physics is found at the LHC, then the many golden measurements from SuperB will help decode the subtle nature of the new physics. However if no new particles are found at the LHC, SuperB will be able to search for new physics at energy scales up to 10 − 100 TeV. In either scenario, flavour physics measurements that can be made at SuperB play a pivotal role in understanding the nature of physics beyond the Standard Model. Examples for using the interplay between measurements to discriminate New Physics models are discussed in this document.SuperB is a Super Flavour Factory, in addition to studying large samples of B u,d,s , D and τ decays, SuperB has a broad physics programme that includes spectroscopy both in terms of the Standard Model and exotica, and precision measurements of sin 2 θ W . In addition to performing CP violation measurements at the Υ (4S) and φ(3770), SuperB will test CP T in these systems, and lepton universality in a number of different processes. The multitude of rare decay measurements possible at SuperB can be used to constrain scenarios of physics beyond the Standard Model. In terms of other precision tests of the Standard Model, this experiment will be able to perform precision over-constraints of the unitarity triangle through multiple measurements of all angles and sides.

The upgraded MIPP physics results are needed for the support of NuMI projects, atmospheric cosmic ray and neutrino programs worldwide and will p ermit a systematic study of non-perturbative QCD interctions. The MIPP TPC is the largest contributor to the MIPP event size by far. Its readout system and electronics were designed in the 1990's and limit it to a readout rate of 60 Hz in simple events and;::;:; 20 Hz in complicated events. With the readout chips designed for the ALICE collaboration at the LHC, we propose a low cost scheme of upgrading the MIPP data acquisition speed to 3000 Hz. This will also enable us to measure the medium energy numi target to be used for the NOvA/MINERvA experiments. We outline the capabilities of the upgraded MIPP detector to obtain high statistics particle production data on a number of nuclei that will help towards the understanding and simulation of hadronic showers in matter. Measurements of nitrogen cross sections will permit a better understanding of cosmic ray shower systematics in the atmosphere . In addition , we explore the possibilities of providing tagged neutral beams using the MIPP spectrometer that may be crucial for validating the Particle Flow Algorithm proposed for calorimeters for the International Linear Collider detectors. Lastly, we outline the physics potential of such a detector in understanding non-perturbative QCD processes.

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This dissertation describes studies of the rare decays+ − is either an e + e − or a µ + µ − pair. These decays are highly suppressed in the StandardModel, and could be strongly affected by physics beyond the Standard Model. We measure the total branching fractionsIn addition, we measure the partial branching fractions, relative abundance of muons to electrons, direct CP asymmetry, dilepton forward-backward asymmetry, and longitudinal polarization of the K * in these modes. We also search for the lepton flavor-violating decaysThe measurements were performed at the SLAC PEP II storage ring running at the Υ (4S) resonance.i

We present a preliminary measurement of CP-violating asymmetries in fully reconstructed B 0 →D (*)± π ∓ and B 0 →D ± ρ ∓ decays in approximately 110 million Υ (4S) → BB decays collected with the BABAR detector at the PEP-II asymmetric-energy B factory at SLAC. From a maximum likelihood fit to the time-dependent decay distributions we obtain for the CP-violating parameters: a Dπ = −0.032 ± 0.031 (stat.) ± 0.020 (syst.), c Dπ lep = −0.059 ± 0.055 (stat.) ± 0.033 (syst.) on the B 0 →D ± π ∓ sample, a D * π = −0.049 ± 0.031 (stat.) ± 0.020 (syst.), c D * π lep = +0.044 ± 0.054 (stat.) ± 0.033 (syst.) on the B 0 →D * ± π ∓ sample, and a Dρ = −0.005 ± 0.044 (stat.) ± 0.021 (syst.), c Dρ lep = −0.147 ± 0.074 (stat.) ± 0.035 (syst.) on the B 0 →D ± ρ ∓ sample.