Search Results - "U. Nierste"

Next-to-leading order QCD corrections to the lifetime difference of Bs mesons by Beneke, M., Buchalla, G., Greub, C., Lenz, A., Nierste, U.

“…We compute the QCD corrections to the decay rate difference in the B s – B ̄ s system, Δ Γ B s , in the next-to-leading logarithmic approximation using the…”
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Towards next-to-next-to-leading-log accuracy for the width difference in the Bs−B¯s system: fermionic contributions to order (mc/mb)0 and (mc/mb)1 by Asatrian, H. M., Hovhannisyan, A., Nierste, U., Yeghiazaryan, A.

“…A bstract We calculate a class of three-loop Feynman diagrams which contribute to the next-to-next-to-leading logarithmic approximation for the width…”
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Constraints on new physics in B − B ¯ mixing in the light of recent LHCb data by Lenz, A., Nierste, U., Charles, J., Descotes-Genon, S., Lacker, H., Monteil, S., Niess, V., T’Jampens, S.

“…We perform model-independent statistical analyses of three scenarios accommodating new physics (NP) in Delta F = 2 flavor-changing neutral current amplitudes…”
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Towards next-to-next-to-leading-log accuracy for the width difference in the $$ {B}_s-{\overline{B}}_s $$ system: fermionic contributions to order (m c /m b )0 and (m c /m b )1 by Asatrian, H. M., Hovhannisyan, A., Nierste, U., Yeghiazaryan, A.

“…A bstract We calculate a class of three-loop Feynman diagrams which contribute to the next-to-next-to-leading logarithmic approximation for the width…”
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Vacuum stability of the effective Higgs potential in the minimal supersymmetric standard model by Bobrowski, Markus, Chalons, Guillaume, Hollik, Wolfgang G., Nierste, Ulrich

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CP asymmetry in flavour-specific B decays beyond leading logarithms by Beneke, Martin, Buchalla, Gerhard, Lenz, Alexander, Nierste, Ulrich

“…We compute next-to-leading order QCD corrections to the CP asymmetry afs=Im(Γ12/M12) in flavour-specific Bd,s decays such as Bd→Xℓν̄ℓ or Bs→Ds−π+. The…”
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b→ sγ and supersymmetry with large tan β by Carena, Marcela, Garcia, David, Nierste, Ulrich, Wagner, Carlos E.M

“…We discuss the constraints on the supersymmetric parameter space from the decay mode b→ sγ for large values of tan β. We improve the theoretical prediction for…”
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Towards next-to-next-to-leading-log accuracy for the width difference in the B s − B ¯ s $$ {B}_s-{\overline{B}}_s $$ system: fermionic contributions to order (m c /m b )0 and (m c /m b )1 by H. M. Asatrian, A. Hovhannisyan, U. Nierste, A. Yeghiazaryan

“…Abstract We calculate a class of three-loop Feynman diagrams which contribute to the next-to-next-to-leading logarithmic approximation for the width difference…”
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B, D and K decays by Buchalla, G., Komatsubara, T. K., Muheim, F., Silvestrini, L., Asner, D. M., Ball, P., Baracchini, E., Bell, G., Bigi, I. I., Blanke, M., Bobeth, Ch, Borzumati, F., Browder, T., Buanes, T., Buchmüller, O., Buras, A. J., Cassel, D. G., Cavanaugh, R., Ciuchini, M., Colangelo, P., Dedes, A., De Fazio, F., Dickens, J., Doležal, Z., Dürr, S., Egede, U., Eggel, C., Eigen, G., Fajfer, S., Feldmann, Th, Ferrandes, R., Gershon, T., Gibson, V., Giorgi, M., Gligorov, V. V., Golob, B., Golutvin, A., Grossman, Y., Hazumi, M., Heinemeyer, S., Hiller, G., Hitlin, D., Huber, T., Hurth, T., Iijima, T., Ishikawa, A., Isidori, G., Jäger, S., Koppenburg, P., Lagouri, T., Lazzeroni, C., Lenz, A., Lucha, W., Mahlke, H., Melikhov, D., Misiak, M., Nakao, M., Napolitano, J., Nikitin, N., Nierste, U., Oide, K., Okada, Y., Parodi, F., Patel, M., Petrov, A. A., Pham, T. N., Playfer, S., Policicchio, A., Poschenrieder, A., Recksiegel, S., Řezníček, P., Robert, A., Ruggiero, G., Schneider, O., Schwab, F., Simula, S., Sivoklokov, S., Smith, C., Smizanska, M., Soni, A., Speer, T., Spradlin, P., Spranger, M., Stech, B., Stocchi, A., Stone, S., Teubert, F., T’Jampens, S., Toms, K., Trabelsi, K., Trine, S., Uhlig, S., Weiglein, G., Weiler, A., Wilkinson, G., Xie, Y., Yamauchi, M., Zhu, G., Zupan, J., Zwicky, R.

“…The present report documents the results of Working Group 2: B , D and K decays, of the workshop on Flavor in the Era of the LHC, held at CERN from November…”
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Evanescent operators, scheme dependences and double insertions by Herrlich, Stefan, Nierste, Ulrich

“…The anomalous dimension matrix of dimensionally regularized four-quark operators is known to be affected by evanescent operators, which vanish in D = 4…”
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Higgs sector of the minimal left-right symmetric model by Barenboim, Gabriela, Gorbahn, Martin, Nierste, Ulrich, Raidal, Martti

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Indirect CP violation in the neutral kaon system beyond leading logarithms by Herrlich, S, Nierste, U

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Penguin diagrams, charmless B decays, and the “missing charm puzzle” by Lenz, Alexander, Nierste, Ulrich, Ostermaier, Gaby

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Anatomy of new physics in B - B ¯ mixing by Lenz, A., Nierste, U., Charles, J., Descotes-Genon, S., Jantsch, A., Kaufhold, C., Lacker, H., Monteil, S., Niess, V., T’Jampens, S.

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Correlation of B(s) --> mu(+)mu(-) and (g - 2)(mu) in minimal supergravity by Dedes, A, Dreiner, H K, Nierste, U

“…We analyze the decay mode B(s)-->mu(+)mu(-) in minimal supergravity (mSUGRA). We find that the recently measured excess in (g-2)(mu), if interpreted within…”
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Probing light sbottoms with B decays by Nierste, Ulrich, Plehn, Tilman

“…We discuss recently reported experimental hints for a bottom squark with mass around 3.5 GeV decaying as b ̃ →cℓ ν ̃ ∗ . We correlate the sbottom lifetime with…”
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A short look at ϵ′/ ϵ by Keum, Yong-Yeon, Nierste, Ulrich, Sanda, A.I.

“…We analyze the theoretical implications of the new KTeV measurement of direct CP-violation in K→ ππ decays. The result is found consistent with the Standard…”
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Lifetimes of heavy hadrons beyond leading logarithms by Nierste, U

“…The lifetime splitting between the B^+ and B_d^0 mesons has recently been calculated in the next-to-leading order of QCD. These corrections are necessary for a…”
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b {yields} s{gamma} and supersymmetry with large tan{beta} by Carena, M., Garcia, D., Nierste, U., Wagner, C. E. M., High Energy Physics, FNAL, CERN, Univ. of Chicago, Santa Cruz Inst. of Particle Physics, Univ. of California

“…We discuss the constraints on the supersymmetric parameter space from the decay mode b {yields} s{gamma} for large values of tan{beta}. We improve the…”
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Supersymmetric corrections to Higgs decays and b-> s gamma for large tan beta by Nierste, U

“…If tan beta is large, supersymmetric QCD corrections can become large, putting naive perturbation theory into doubt. I show how these tan-beta-enhanced…”
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