A search is presented for hidden-sector bosons, Ï , produced in the decay B0â Kâ (892)0Ï , with Kâ (892)0â K+Ï - and Ï â μ+μ-. The search is performed using pp-collision data corresponding to 3.0fb-1 collected with the LHCb detector. No significant signal is observed in the accessible mass range 214â ¤m(Ï )â ¤4350MeV, and upper limits are placed on the branching fraction product B(B0â Kâ (892)0Ï )à B(Ï â μ+μ-) as a function of the mass and lifetime of the Ï boson. These limits are of the order of 10-9 for Ï lifetimes less than 100 ps over most of the m(Ï ) range, and place the most stringent constraints to date on many theories that predict the existence of additional low-mass bosons.

Search for Hidden-Sector Bosons in B0 -> K*0 mu+ mu- Decays / Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreassi, G., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 115:16(2015), pp. 161802-161802. [10.1103/PhysRevLett.115.161802]

Search for Hidden-Sector Bosons in B0 -> K*0 mu+ mu- Decays

Bizzeti, A.;
2015

Abstract

A search is presented for hidden-sector bosons, Ï , produced in the decay B0â Kâ (892)0Ï , with Kâ (892)0â K+Ï - and Ï â μ+μ-. The search is performed using pp-collision data corresponding to 3.0fb-1 collected with the LHCb detector. No significant signal is observed in the accessible mass range 214â ¤m(Ï )â ¤4350MeV, and upper limits are placed on the branching fraction product B(B0â Kâ (892)0Ï )à B(Ï â μ+μ-) as a function of the mass and lifetime of the Ï boson. These limits are of the order of 10-9 for Ï lifetimes less than 100 ps over most of the m(Ï ) range, and place the most stringent constraints to date on many theories that predict the existence of additional low-mass bosons.
2015
16-ott-2015
115
16
161802
161802
Search for Hidden-Sector Bosons in B0 -> K*0 mu+ mu- Decays / Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreassi, G., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 115:16(2015), pp. 161802-161802. [10.1103/PhysRevLett.115.161802]
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Car...espandi
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