Search for the Decays ${B^0_{(s)}\to e^+\mu^-}$ and ${B^0_{(s)}\to e^+e^-}$ in CDF Run II
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(1)
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H.S. Lee
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V. Martink
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M. Mart'ınez
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M. Mathis
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A.J. Slaughter
- Function : Author
J. Slaunwhite
- Function : Author
Katrina Sliwa
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J.R. Smith
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F.D. Snider
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R. Snihur
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A. Soha
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S. Somalwar
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V. Sorin
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J. Spalding
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T. Spreitzer
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P. Squillaciotiaa
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M. Stanitzki
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R. St. Denis
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B. Stelzer
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O. Stelzer-Chilton
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D. Stentz
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J. Strologas
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G.L. Strycker
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D. Stuart
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J.S. Suh
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A. Sukhanov
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I. Suslov
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T. Suzuki
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A. Taffardf
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R. Takashima
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Y. Takeuchi
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R. Tanaka
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M. Tecchio
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P.K. Teng
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K. Terashi
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J. Thomh
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A.S. Thompson
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G.A. Thompson
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E. Thomson
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P. Tipton
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P. Ttito-Guzm'An
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S. Tkaczyk
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D. Toback
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S. Tokar
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K. Tollefson
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T. Tomura
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D. Tonelli
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S. Torre
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D. Torretta
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P. Totarodd
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M. Trovato
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S.-Y. Tsai
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Y. Tu
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N. Turiniaa
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F. Ukegawa
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S. Vallecorsa
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N. van Remortelb
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A. Varganov
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E. Vatagabb
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F. V'Azquezn
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G. Velev
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C. Vellidis
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M. Vidal
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Roland Vidal
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I. Vila
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R. Vilar
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T. Vine
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M. Vogel
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I. Volobouevt
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G. Volpiz
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P. Wagner
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R.G. Wagner
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R.L. Wagner
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W. Wagnerw
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J. Wagner-Kuhr
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T. Wakisaka
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R. Wallny
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S.M. Wang
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A. Warburton
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D. Waters
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M. Weinberger
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J. Weinelt
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H. Wenzel
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W.C. Wester Iii
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B. Whitehouse
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D. Whitesonf
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A.B. Wicklund
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E. Wicklund
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S. Wilbur
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G. Williams
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H.H. Williams
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P. Wilson
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B.L. Winer
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P. Wittichh
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S. Wolbers
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C. Wolfe
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T. Wright
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X. Wu
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- PersonId : 829304
F. W¨urthwein
- Function : Author
S. Xie
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A. Yagil
- Function : Author
K. Yamamoto
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J. Yamaoka
- Function : Author
U.K. Yangp
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Y.C. Yang
- Function : Author
W.M. Yao
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G.P. Yeh
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J. Yoh
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K. Yorita
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T. Yoshidam
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G.B. Yu
- Function : Author
I. Yu
- Function : Author
S.S. Yu
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J.C. Yun
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L. Zanellocc
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A. Zanetti
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X. Zhang
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Y. Zhengd
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S. Zucchellix
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Abstract
We report results from a search for the lepton flavor violating decays $B^0_{(s)}\to e^+\mu^-$, and the flavor-changing neutral-current decays $B^0_{(s)} \to e^+ e^-$. The analysis uses data corresponding to ${\rm 2 fb^{-1}}$ of integrated luminosity of $p \bar{p}$ collisions at $\sqrt{s}=1.96 {\rm TeV}$ collected with the upgraded Collider Detector (CDF II) at the Fermilab Tevatron. The observed number of $B^0_{(s)}$ candidates is consistent with background expectations. The resulting Bayesian upper limits on the branching ratios at 90% credibility level are $\mathcal{B}(B^0_s \to e^{+}\mu^{-}) < 2.0 \times 10^{-7}$, $\mathcal{B}(B^0 \to e^{+}\mu^{-})< 6.4 \times 10^{-8}$, $\mathcal{B}(B^0_s \to e^{+}\mu^{-}) < 2.0 \times 10^{-7}$ and $\mathcal{B}(B^0 \to e^{+}\mu^{-})< 6.4 \times 10^{-8}$. From the limits on $\mathcal{B} (B^0_{(s)}\to e^+\mu^-)$, the following lower bounds on the Pati-Salam leptoquark masses are also derived: ${M_{LQ}}(B^0_s\to e^+ \mu^-) > 47.8 {\rm TeV/c^2}$, and ${M_{LQ}}(B^0\to e^+ \mu^-) > 59.3 {\rm TeV/c^2}$, at 90% credibility level.