152,963 research outputs found

    B Physics Prospects at LHC

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    Future Experiments at LHC will have the opportunity to pursue an extensive program on B Physics and CP violation. The expected performance are presented here.Comment: Presented at XXXXth Rencontres de Moriond, Electroweak Interaction and Unified Theories, March 5-12, 200

    Single Top Production as a Probe of B-prime Quarks

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    We show how single top production at the LHC can be used to discover (and characterize the couplings of) B' quarks, which are an essential part of many natural models of new physics beyond the Standard Model. We present the B' effective model and concentrate on resonant production via a colored anomalous magnetic moment. Generally, B's preferentially decay into a single top quark produced in association with a W boson; thus, this production process makes associated single top production essential to B' searches at the LHC. We demonstrate the background processes are manageable and the signal cross section is sufficient to yield a large signal significance even during the 7 TeV LHC run. Specifically, we show that B' masses of 700 GeV or more can be probed. Moreover, if a B' is found, then the chirality of its coupling can be determined. Finally, we present signal cross sections for several different LHC energies.Comment: 19 pages, 7 figures, 1 tabl

    Review of CP Violation Studies with B-Mesons at LHC

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    The Large Hadron Collider (LHC) proposed at CERN will be the ultimate source of B-mesons. With the large number of B-mesons expected at LHC, a real precision test of CP violation in B-meson decays will become possible. There are already several efforts made to explore this possibility and a summary of those activities is presented.Comment: Standard LaTex, No figure, 10 pages Plenary talk given at 1994 International Workshop on B Physics Physics Beyond the Standard Model at the B Factory Nagoya, October 199

    Detecting Higgs Bosons with Muons at Hadron Colliders

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    We investigate the prospects for the discovery of neutral Higgs bosons with a pair of muons by direct searches at the CERN Large Hadron Collider (LHC) as well as by indirect searches in the rare decay Bsμ+μB_s \to \mu^+\mu^- at the Fermilab Tevatron and the LHC. Promising results are found for the minimal supersymmetric standard model, the minimal supergravity (mSUGRA) model, and supergravity models with non-universal Higgs masses (NUHM SUGRA). For tanβ50\tan\beta \simeq 50, we find that (i) the contours for a branching fraction of B(Bsμ+μ)=1×108B(B_s \to \mu^+\mu^-) = 1 \times 10^{-8} in the parameter space are very close to the 5σ5\sigma contours for ppbϕ0bμ+μ+X,ϕ0=h0,H0,A0pp \to b\phi^0 \to b\mu^+\mu^- +X, \phi^0 = h^0, H^0, A^0 at the LHC with an integrated luminosity (LL) of 30 fb1^{-1}, (ii) the regions covered by B(Bsμ+μ)5×109B(B_s \to \mu^+\mu^-) \ge 5\times 10^{-9} and the discovery region for bϕ0bμ+μb\phi^0 \to b\mu^+\mu^- with 300 fb1^{-1} are complementary in the mSUGRA parameter space, (iii) in NUHM SUGRA models, a discovery of B(Bsμ+μ)5×109B(B_s \to \mu^+\mu^-) \simeq 5\times 10^{-9} at the LHC will cover regions of the parameter space beyond the direct search for bϕ0bμ+μb\phi^0 \to b\mu^+\mu^- with L=300L = 300 fb1^{-1}.Comment: The version to appear in Physics Letters

    CP-Violation in the Two Higgs Doublet Model: from the LHC to EDMs

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    We study the prospective sensitivity to CP-violating Two Higgs Doublet Models from the 14 TeV LHC and future electric dipole moment (EDM) experiments. We concentrate on the search for a resonant heavy Higgs that decays to a ZZ boson and a SM-like Higgs h, leading to the Z()h(bbˉ)Z(\ell\ell)h(b\bar{b}) final state. The prospective LHC reach is analyzed using the Boosted Decision Tree method. We illustrate the complementarity between the LHC and low energy EDM measurements and study the dependence of the physics reach on the degree of deviation from the alignment limit. In all cases, we find that there exists a large part of parameter space that is sensitive to both EDMs and LHC searches.Comment: 21 pages, 34 figure

    Probing the charged Higgs boson at the LHC in the CP-violating type-II 2HDM

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    We present a phenomenological study of a CP-violating two-Higgs-doublet Model with type-II Yukawa couplings at the Large Hadron Collider (LHC). In the light of recent LHC data, we focus on the parameter space that survives the current and past experimental constraints as well as theoretical bounds on the model. Once the phenomenological scenario is set, we analyse the scope of the LHC in exploring this model through the discovery of a charged Higgs boson produced in association with a W boson, with the former decaying into the lightest neutral Higgs and a second W state, altogether yielding a b\bar b W^+W^- signature, of which we exploit the W^+W^- semileptonic decays.Comment: 37 pages, 16 figures; v2 updated treatment of LHC constraint

    Future B Experiments from The BTeV/LHC-b Perspective

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    Many measurements are necessary in the program of studying mixing, CP violation and rare decays of b and c quarks. These measurements require large numbers of B^o, B_s, B^- and D^{*+} hadrons. Fortunately, copius production of particles containing b and c quarks will occur at Tevatron and the LHC. The crucial measurements are described here, as well as the design of the two experiments, LHC-b and BTeV, that can exploit the 4-20 x 10^{11} b hadrons produced every 10^7 seconds.Comment: Presented at the 3rd International Conference on B Physics and CP Violation, Taipei, December 3-7, 1999 15 pages, 10 figure
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