Search for the Decays B0(s) ---> e+ mu- and B0(s) ---> e+ e- in CDF Run. II.

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The authors report results from a search for the lepton flavor violating decays B{sub (s)}{sup 0} {yields} e{sup +}{mu}{sup -}, and the flavor-changing neutral-current decays B{sub (s)}{sup 0} {yields} e{sup +}e{sup -}. The analysis uses data corresponding to 2 fb{sup -1} of integrated luminosity of p{bar p} collisions at {radical}s = 1.96 TeV collected with the upgraded Collider Detector (CDF II) at the Fermilab Tevatron. The observed number of B{sub (s)}{sup 0} candidates is consistent with background expectations. The resulting bayesian upper limits on the branching ratios at 90% credibility level are {Beta}(B{sub s}{sup 0} {yields} e{sup +}{mu}{sup -}) < ... continued below

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7 pages

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Aaltonen, T.; Phys., /Helsinki Inst. of; Adelman, J.; /Chicago U., EFI; Akimoto, T.; U., /Tsukuba et al. January 1, 2009.

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The authors report results from a search for the lepton flavor violating decays B{sub (s)}{sup 0} {yields} e{sup +}{mu}{sup -}, and the flavor-changing neutral-current decays B{sub (s)}{sup 0} {yields} e{sup +}e{sup -}. The analysis uses data corresponding to 2 fb{sup -1} of integrated luminosity of p{bar p} collisions at {radical}s = 1.96 TeV collected with the upgraded Collider Detector (CDF II) at the Fermilab Tevatron. The observed number of B{sub (s)}{sup 0} candidates is consistent with background expectations. The resulting bayesian upper limits on the branching ratios at 90% credibility level are {Beta}(B{sub s}{sup 0} {yields} e{sup +}{mu}{sup -}) < 2.0 x 10{sup -7}, {Beta}(B{sup 0} {yields} e{sup +}{mu}{sup -}) < 6.4 x 10{sup -8}, {Beta}(B{sub s}{sup 0} {yields} e{sup +}e{sup -}) < 2.8 x 10{sup -7} and {Beta}(B{sup 0} {yields} e{sup +}e{sup -}) < 8.3 x 10{sup -8}. From the limits on {Beta}(B{sub (s)}{sup 0} {yields} e{sup +}{mu}{sup -}), the following lower bounds on the Pati-Salam leptoquark masses are also derived: M{sub LQ}(B{sub s}{sup 0} {yields} e{sup +}{mu}{sup -}) > 47.8 TeV/c{sup 2}, and M{sub LQ}(B{sup 0} {yields} e{sup +}{mu}{sup -}) > 59.3 TeV/c{sup 2}, at 90% credibility level.

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  • Report No.: FERMILAB-PUB-09-021-E
  • Grant Number: AC02-07CH11359
  • Office of Scientific & Technical Information Report Number: 950515
  • Archival Resource Key: ark:/67531/metadc930341

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  • January 1, 2009

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  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 8, 2016, 10:51 p.m.

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Aaltonen, T.; Phys., /Helsinki Inst. of; Adelman, J.; /Chicago U., EFI; Akimoto, T.; U., /Tsukuba et al. Search for the Decays B0(s) ---> e+ mu- and B0(s) ---> e+ e- in CDF Run. II., article, January 1, 2009; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc930341/: accessed August 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.