Related papers: CLEO Results: B Decays

More Precise Determination of V_{cb} & V_{ub} and Direct CP Violation in Charmless B Decays

More precise extractions on the two important CKM matrix elements $|V_{cb}|$ and $|V_{ub}|$ are presented up to $1/m_Q^2$ corrections based on the complete heavy quark effective field theory (HQEFT) of QCD. The HQEFT as a large component…

High Energy Physics - Phenomenology · Physics 2007-05-23 Wen-Yu Wang , Yue-Liang Wu , Yu-Feng Zhou

Determination of the CKM angle gamma and |V_{ub}/V_{cb}| from inclusive direct CP asymmetries and branching ratios in charmless B decays

We have calculated inclusive direct CP-asymmetries for charmless B^{+/-} -decays. After summing large logarithms to all orders the CP-asymmetries in Delta S=0 and Delta S=1 decays are found as a_{CP} (Delta S=0) = (2.0 +1.2/-1.0)% and…

High Energy Physics - Phenomenology · Physics 2016-09-06 A. Lenz , U. Nierste , G. Ostermaier

|Vub| Measurements at B-Factories

The determination of the Vub element of the Cabibbo-Kobayashi-Maskawa (CKM) quark mixing matrix plays a central role in testing the Standard Model (SM) interpretation of CP violation. Measurements at B-Factories are contributing with…

High Energy Physics - Experiment · Physics 2007-05-23 A. Sarti

$B \rightarrow X_s\,\gamma$ and $B \rightarrow K^*\,\gamma$ in the standard and 2H models

Theoretical predictions for the branching ratios of the $B \rightarrow X_s\,\gamma$ and $B \rightarrow K^*\,\gamma$ decays are calculated in the Standard Model and in the (type II) two-Higgs-doublet model. Both the complete leading and the…

High Energy Physics - Phenomenology · Physics 2009-09-25 M. Ciuchini

Measurement of the decay $B^0\to\pi^-\ell^+\nu$ and determination of $|V_{ub}|$

We present a measurement of the charmless semileptonic decay $B^0\to\pi^-\ell^+\nu$ using a data sample containing 657$\times 10^6$ $B\bar{B}$ events collected with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider…

High Energy Physics - Experiment · Physics 2015-03-17 H. Ha , E. Won , I. Adachi , H. Aihara , T. Aziz , A. M. Bakich , V. Balagura , E. Barberio , A. Bay , K. Belous , V. Bhardwaj , B. Bhuyan , M. Bischofberger , A. Bondar , A. Bozek , M. Bracko , T. E. Browder , Y. Chao , A. Chen , P. Chen , B. G. Cheon , C. -C. Chiang , I. -S. Cho , K. Cho , K. -S. Choi , Y. Choi , J. Dalseno , M. Danilov , Z. Dolezal , A. Drutskoy , W. Dungel , S. Eidelman , N. Gabyshev , B. Golob , J. Haba , K. Hayasaka , H. Hayashii , Y. Horii , Y. Hoshi , W. -S. Hou , Y. B. Hsiung , H. J. Hyun , T. Iijima , K. Inami , R. Itoh , M. Iwabuchi , Y. Iwasaki , N. J. Joshi , T. Julius , J. H. Kang , T. Kawasaki , C. Kiesling , H. J. Kim , H. O. Kim , M. J. Kim , S. K. Kim , Y. J. Kim , K. Kinoshita , B. R. Ko , S. Korpar , P. Krizan , T. Kuhr , T. Kumita , A. Kuzmin , Y. -J. Kwon , S. -H. Kyeong , J. S. Lange , M. J. Lee , S. -H. Lee , Y. Li , A. Limosani , C. Liu , Y. Liu , D. Liventsev , R. Louvot , S. McOnie , K. Miyabayashi , H. Miyata , Y. Miyazaki , G. B. Mohanty , T. Mori , Y. Nagasaka , E. Nakano , M. Nakao , H. Nakazawa , Z. Natkaniec , S. Neubauer , S. Nishida , K. Nishimura , O. Nitoh , T. Nozaki , S. Ogawa , T. Ohshima , S. Okuno , S. L. Olsen , P. Pakhlov , G. Pakhlova , C. W. Park , H. Park , H. K. Park , R. Pestotnik , M. Petric , L. E. Piilonen , M. Rohrken , S. Ryu , H. Sahoo , Y. Sakai , O. Schneider , C. Schwanda , A. J. Schwartz , K. Senyo , M. E. Sevior , M. Shapkin , C. P. Shen , J. -G. Shiu , F. Simon , P. Smerkol , Y. -S. Sohn , A. Sokolov , S. Stanic , M. Staric , T. Sumiyoshi , Y. Teramoto , K. Trabelsi , S. Uehara , T. Uglov , Y. Unno , S. Uno , S. E. Vahsen , G. Varner , K. E. Varvell , A. Vossen , C. H. Wang , M. -Z. Wang , P. Wang , M. Watanabe , Y. Watanabe , Y. Yamashita , Z. P. Zhang , P. Zhou , V. Zhulanov , T. Zivko , A. Zupanc

Improved method for CKM constraints in charmless three-body B and B_s decays

Recently Ciuchini, Pierini and Silvestrini proposed a method for constraining CKM parameters in B->K pi pi and B_s-> K pi pi through phase measurements of amplitudes involving I=3/2 K*pi final states. We show that complementary information…

High Energy Physics - Phenomenology · Physics 2008-11-26 Michael Gronau , Dan Pirjol , Amarjit Soni , Jure Zupan

Towards a global fit to extract the B->Xs gamma decay rate and Vub

The total B->Xs gamma decay rate and the CKM-matrix element Vub play an important role in finding indirect evidence for new physics affecting the flavor sector of the Standard Model, complementary to direct searches at the LHC and Tevatron.…

High Energy Physics - Phenomenology · Physics 2011-05-18 Florian U. Bernlochner , Heiko Lacker , Zoltan Ligeti , Iain W. Stewart , Frank J. Tackmann , Kerstin Tackmann

Measurement of the form factors of the decay B0 -> D*- ell+ nu and determination of the CKM matrix element |Vcb|

This article describes a determination of the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cb}|$ from the decay $B^0\to D^{*-}\ell^+\nu_\ell$ using 711 fb$^{-1}$ of Belle data collected near the $\Upsilon(4S)$ resonance. We simultaneously…

High Energy Physics - Experiment · Physics 2011-02-02 W. ~Dungel , C. ~Schwanda , I. ~Adachi , H. ~Aihara , T. ~Aushev , T. ~Aziz , A. ~M. ~Bakich , V. ~Balagura , E. ~Barberio , M. ~Bischofberger , A. ~Bozek , M. ~Bračko , T. ~E. ~Browder , P. ~Chang , Y. ~Chao , A. ~Chen , P. ~Chen , B. ~G. ~Cheon , R. ~Chistov , I. -S. ~Cho , K. ~Cho , K. -S. ~Choi , Y. ~Choi , J. ~Dalseno , A. ~Drutskoy , S. ~Eidelman , H. ~Ha , J. ~Haba , H. ~Hayashii , Y. ~Horii , Y. ~Hoshi , W. -S. ~Hou , T. ~Iijima , K. ~Inami , M. ~Iwabuchi , Y. ~Iwasaki , N. ~J. ~Joshi , T. ~Julius , J. ~H. ~Kang , T. ~Kawasaki , H. ~J. ~Kim , H. ~O. ~Kim , J. ~H. ~Kim , M. ~J. ~Kim , Y. ~J. ~Kim , K. ~Kinoshita , B. ~R. ~Ko , P. ~Krokovny , T. ~Kuhr , T. ~Kumita , A. ~Kuzmin , Y. -J. ~Kwon , S. -H. ~Kyeong , M. ~J. ~Lee , S. -H. ~Lee , J. ~Li , A. ~Limosani , C. ~Liu , Y. ~Liu , D. ~Liventsev , R. ~Louvot , A. ~Matyja , S. ~McOnie , H. ~Miyata , R. ~Mizuk , G. ~B. ~Mohanty , T. ~Mori , E. ~Nakano , M. ~Nakao , Z. ~Natkaniec , S. ~Neubauer , S. ~Nishida , O. ~Nitoh , T. ~Nozaki , T. ~Ohshima , S. ~Okuno , S. ~L. ~Olsen , G. ~Pakhlova , C. ~W. ~Park , H. ~Park , H. ~K. ~Park , M. ~Petrič , L. ~E. ~Piilonen , M. ~Prim , M. ~Röhrken , M. ~Rozanska , S. ~Ryu , H. ~Sahoo , K. ~Sakai , Y. ~Sakai , O. ~Schneider , A. ~J. ~Schwartz , K. ~Senyo , M. ~E. ~Sevior , J. -G. ~Shiu , J. ~B. ~Singh , P. ~Smerkol , A. ~Sokolov , S. ~Stanič , M. ~Starič , T. ~Sumiyoshi , S. ~Suzuki , S. ~Tanaka , G. ~N. ~Taylor , Y. ~Teramoto , K. ~Trabelsi , S. ~Uehara , T. ~Uglov , Y. ~Unno , S. ~Uno , P. ~Urquijo , G. ~Varner , K. ~E. ~Varvell , K. ~Vervink , C. ~H. ~Wang , P. ~Wang , M. ~Watanabe , Y. ~Watanabe , R. ~Wedd , K. ~M. ~Williams , E. ~Won , Y. ~Yamashita , D. ~Zander , Z. ~P. ~Zhang , P. ~Zhou , V. ~Zhulanov , T. ~Zivko

On The Expected Photon Spectrum in B -> X_s + gamma and Its Uses

Measuring the photon energy spectrum in radiative B decays provides essential help for gaining theoretical control over semileptonic B transitions. The hadronic recoil mass distribution in B -> X_u \ell\nu promises the best environment for…

High Energy Physics - Phenomenology · Physics 2008-11-26 Ikaros Bigi , Nikolai Uraltsev

Exploring the Charm Sector with CLEO-c

The CLEO collaboration proposes to explore the charm sector starting early 2003. It is foreseen to collect on the order of 6 million D D-bar pairs, 300000 Ds Ds-bar pairs at threshold and one billion J/psi decays. High precision charm data…

High Energy Physics - Experiment · Physics 2009-11-07 David Urner

Control of SU(3) symmetry breaking effects in calculations of B meson decay constant

Early B-physics experiments have left us with a number of puzzles in heavy flavour physics. New lattice calculations (with a greater understanding of QCD effects in the Standard Model) will be needed to support the increase in experimental…

High Energy Physics - Lattice · Physics 2018-11-19 Sophie Hollitt , Roger Horsley , Paul D. Jackson , Yoshifumi Nakamura , Holger Perlt , Paul E. L. Rakow , Gerrit Schierholz , Hinnerk Stüben , Ross D. Young , James M. Zanotti

Experimental Status of Semileptonic B Decays - Recent Results from LEP and Comparisons with Y(4S) Experiments

Recent analyses of the LEP and Y(4S) data have better outlined the picture of semileptonic B decays. Results on inclusive and exclusive decay branching fractions and on the extraction of the Vub and Vcb elements of the CKM mixing matrix are…

High Energy Physics - Experiment · Physics 2014-11-17 Marco Battaglia

B Meson Decays

We discuss the most important Physics thus far extracted from studies of B meson decays. Measurements of the four CP violating angles accessible in B decay are reviewed as well as direct CP violation. A detailed discussion of the…

High Energy Physics - Phenomenology · Physics 2009-12-03 Marina Artuso , Elisabetta Barberio , Sheldon Stone

Leptonic Decays of Charged Pseudoscalar Mesons - 2015

We review the physics of purely leptonic decays of $\pi^\pm$, $K^\pm$, $D^{\pm}$, $D_s^\pm$, and $B^\pm$ pseudoscalar mesons. The measured decay rates are related to the product of the relevant weak-interaction-based CKM matrix element of…

High Energy Physics - Phenomenology · Physics 2016-03-10 Jonathan L. Rosner , Sheldon Stone , Ruth S. Van de Water

The CLEO-c Research Program

In spring 2003, the B physics era ended for the CLEO experiment with a final run at the Y(5S) resonance. Over the summer the experiment and the CESR accelerator were modified to operate at lower center-of-mass energies between 3 and 5 GeV.…

High Energy Physics - Experiment · Physics 2009-11-10 Holger Stoeck

Rare B and Charm Decays at the Tevatron

The measurements of rare decays are highly sensitive to physics beyond the standard model. In this article limits on the branching ratios of the decays B0s -> mu+mu-, D0 -> mu+mu- and D+ -> pi+mu+mu- are presented. Furthermore the first…

High Energy Physics - Experiment · Physics 2019-08-14 Thomas Kuhr

New results on semileptonic b decays from LHCb

We report new measurements, based on the Run I dataset collected by the LHCb experiment, of the B0 mixing frequency Dm_d and the CKM matrix element |V_ub| using semileptonic b decays. The former is the most precise measurement ever…

High Energy Physics - Experiment · Physics 2015-11-03 Marco Fiore

Probing the $WW\gamma$ Vertex in Radiative $b$-Quark Decays

The recent CLEO results on on radiative $b$-quark decays are used to derive constraints on anomalous $WW\gamma$ couplings. These constraints are compared with expectations from $p\bar p\rightarrow e^\pm p\llap/_T\gamma+X$ at the Tevatron.…

High Energy Physics - Phenomenology · Physics 2007-05-23 U. Baur

Measurements of $|V_{cb}|$ and $|V_{ub}|$ from Belle and Belle II

This proceeding summarizes recent measurements of the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements $|V_{cb}|$ and $|V_{ub}|$ at the Belle and Belle~II experiments. It provides insights derived from both exclusive and inclusive…

High Energy Physics - Experiment · Physics 2023-11-02 Lu Cao

Determination of |Vub| in inclusive semileptonic B meson decays

We present a preliminary determination of the CKM matrix element |Vub| based on the analysis of semileptonic B decays from a sample of 88 million Upsilon(4S) decays collected with the BaBar detector at the e+e- storage ring. Charmless…

High Energy Physics - Experiment · Physics 2007-05-23 B. Aubert , The BaBar Collaboration