BICEP/ Keck XIV: Improved constraints on axionlike polarization oscillations in the cosmic microwave background

Ade, P. A. R.; Ahmed, Z.; Amiri, M.; Barkats, D.; Basu Thakur, R.; Bischoff, C. A.; Beck, D.; Bock, J. J.; Boenish, H.; Bullock, E.; Buza, V.; Cheshire, J. R.; Connors, J.; Cornelison, J.; Crumrine, M.; Cukierman, A.; Denison, E. V.; Dierickx, M.; Duband, L.; Eiben, M.; Fatigoni, S.; Filippini, J. P.; Fliescher, S.; Goeckner-Wald, N.; Goldfinger, D. C.; Grayson, J.; Grimes, P.; Hall, G.; Halal, G.; Halpern, M.; Hand, E.; Harrison, S.; Henderson, S.; Hildebrandt, S. R.; Hilton, G. C.; Hubmayr, J.; Hui, H.; Irwin, K. D.; Kang, J.; Karkare, K. S.; Karpel, E.; Kefeli, S.; Kernasovskiy, S. A.; Kovac, J. M.; Kuo, C. L.; Lau, K.; Leitch, E. M.; Lennox, A.; Megerian, K. G.; Minutolo, L.; Moncelsi, L.; Nakato, Y.; Namikawa, T.; Nguyen, H. T.; O’Brient, R.; Ogburn, R. W.; Palladino, S.; Prouve, T.; Pryke, C.; Racine, B.; Reintsema, C. D.; Richter, S.; Schillaci, A.; Schwarz, R.; Schmitt, B. L.; Sheehy, C. D.; Soliman, A.; Germaine, T. St.; Steinbach, B.; Sudiwala, R. V.; Teply, G. P.; Thompson, K. L.; Tolan, J. E.; Tucker, C.; Turner, A. D.; Umiltà, C.; Vergès, C.; Vieregg, A. G.; Wandui, A.; Weber, A. C.; Wiebe, D. V.; Willmert, J.; Wong, C. L.; Wu, W. L. K.; Yang, H.; Yoon, K. W.; Young, E.; Yu, C.; Zeng, L.; Zhang, C.; Zhang, S.

doi:10.1103/PhysRevD.105.022006

A study is presented of

B^{+} \to K_{S}^{0} K^{-} π^{+} K^{+}

and

B^{+} \to K_{S}^{0} K^{+} π^{-} K^{+}

decays based on the analysis of proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7, 8 and 13 TeV, corresponding to an integrated luminosity of

9 {fb}^{- 1}

. The

K_{S}^{0} K π

invariant-mass distributions of both

B^{+}

decay modes show, in the

m (K_{S}^{0} K π) < 1.85 GeV

mass region, large activity which is resolved using an amplitude analysis. A simple model, where

J^{P C}

amplitudes are described by multiple Breit-Wigner functions with appropriate angular distributions, provides a good description of the experimental data. In this approach a complex mixture of

J^{P C} = 0^{- +}

,

1^{+ +}

and

1^{+ -}

amplitudes is observed that is dominated by

η (1405)

,

η (1470)

,

η (1760)

,

f_{1} (1285)

,

f_{1} (1420)

and

h_{1} (1405)

resonances. The

K_{S}^{0} K π

Dalitz plots are dominated by asymmetric crossing

K^{*} \bar{K}

bands which are different for the two

B^{+}

decay modes. This is due to a different interference pattern between the

1^{+ +}

and

1^{+ -}

More Like this