We report an indirect search for nonstandard model physics using the flavor-changing neutral current decays B→K( *) μ +μ -. We reconstruct the decays and measure their angular distributions, as a function of q2=Mμμ2c2, where M μμ is the dimuon mass, in pp̄ collisions at √s=1.96TeV using a data sample corresponding to an integrated luminosity of 6.8fb -1. The transverse polarization asymmetry AT(2) and the time-reversal-odd charge-and-parity asymmetry A im are measured for the first time, together with the K * longitudinal polarization fraction F L and the muon forward-backward asymmetry A FB for the decays B0→K *0μ +μ - and B +→K *+μ +μ -. The B→K *μ +μ - forward-backward asymmetry in the most sensitive kinematic regime, 1≤q2<6GeV2/c2, is measured to be A FB=0.29-0.23+0.20(stat) ±0.07(syst), the most precise result to date. No deviations from the standard model predictions are observed. © 2012 American Physical Society.

Measurements of the angular distributions in the decays B→K( *)μ +μ - at CDF / Aaltonen T., Alvarez Gonzalez B., Amerio S., Amidei D., Anastassov A., Annovi A., Antos J., Apollinari G., Appel J.A., Apresyan A., Arisawa T., Artikov A., Asaadi J., Ashmanskas W., Auerbach B., Aurisano A., Azfar F., Badgett W., Barbaro-Galtieri A., Barnes V.E., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - ELETTRONICO. - 108:(2012), pp. 0-0. [10.1103/PhysRevLett.108.081807]

Measurements of the angular distributions in the decays B→K( *)μ +μ - at CDF

Latino G.;
2012

Abstract

We report an indirect search for nonstandard model physics using the flavor-changing neutral current decays B→K( *) μ +μ -. We reconstruct the decays and measure their angular distributions, as a function of q2=Mμμ2c2, where M μμ is the dimuon mass, in pp̄ collisions at √s=1.96TeV using a data sample corresponding to an integrated luminosity of 6.8fb -1. The transverse polarization asymmetry AT(2) and the time-reversal-odd charge-and-parity asymmetry A im are measured for the first time, together with the K * longitudinal polarization fraction F L and the muon forward-backward asymmetry A FB for the decays B0→K *0μ +μ - and B +→K *+μ +μ -. The B→K *μ +μ - forward-backward asymmetry in the most sensitive kinematic regime, 1≤q2<6GeV2/c2, is measured to be A FB=0.29-0.23+0.20(stat) ±0.07(syst), the most precise result to date. No deviations from the standard model predictions are observed. © 2012 American Physical Society.
2012
108
0
0
Aaltonen T.; Alvarez Gonzalez B.; Amerio S.; Amidei D.; Anastassov A.; Annovi A.; Antos J.; Apollinari G.; Appel J.A.; Apresyan A.; Arisawa T.; Artiko...espandi
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1195858
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 167
  • ???jsp.display-item.citation.isi??? 113
social impact