A search is presented for hidden-sector bosons, χ, produced in the decay B0→K∗(892)0χ, with K∗(892)0→K+π- and χ→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 214≤m(χ)≤4350MeV, and upper limits are placed on the branching fraction product B(B0→K∗(892)0χ)×B(χ→μ+μ-) as a function of the mass and lifetime of the χ boson. These limits are of the order of 10-9 for χ lifetimes less than 100 ps over most of the m(χ) range, and place the most stringent constraints to date on many theories that predict the existence of additional low-mass bosons.

Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., et al. (2015). Search for Hidden-Sector Bosons in B0 →k∗0μ+μ- Decays. PHYSICAL REVIEW LETTERS, 115(16) [10.1103/PhysRevLett.115.161802].

Search for Hidden-Sector Bosons in B0 →k∗0μ+μ- Decays

Belloli, N;Borsato, M;Calvi, M;Carniti, P;Cassina, L;Gotti, C;Grillo, L;Khanji, B;Martinelli, M;Petruzzo, M;
2015

Abstract

A search is presented for hidden-sector bosons, χ, produced in the decay B0→K∗(892)0χ, with K∗(892)0→K+π- and χ→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 214≤m(χ)≤4350MeV, and upper limits are placed on the branching fraction product B(B0→K∗(892)0χ)×B(χ→μ+μ-) as a function of the mass and lifetime of the χ boson. These limits are of the order of 10-9 for χ lifetimes less than 100 ps over most of the m(χ) range, and place the most stringent constraints to date on many theories that predict the existence of additional low-mass bosons.
Articolo in rivista - Articolo scientifico
Physics and Astronomy (all)
English
2015
115
16
161802
none
Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., et al. (2015). Search for Hidden-Sector Bosons in B0 →k∗0μ+μ- Decays. PHYSICAL REVIEW LETTERS, 115(16) [10.1103/PhysRevLett.115.161802].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/187892
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