Search for D*(2007)0 -> mu+mu- in B--> pi-mu+mu- decays

Aaij R.; Abdelmotteleb A. S. W.; Beteta C. A.; Abudinen F.; Ackernley T.; Adeva B.; Adinolfi M.; Adlarson P.; Afsharnia H.; Agapopoulou C.; Aidala C. A.; Ajaltouni Z.; Akar S.; Akiba K.; Albicocco P.; Albrecht J.; Alessio F.; Alexander M.; Albero A. A.; Aliouche Z.; Cartelle P. A.; Amalric R.; Amato S.; Amey J. L.; Amhis Y.; An L.; Anderlini L.; Andersson M.; Andreianov A.; Andreotti M.; Andreou D.; Ao D.; Archilli F.; Artamonov A.; Artuso M.; Aslanides E.; Atzeni M.; Audurier B.; Perea I. B. B.; Bachmann S.; Bachmayer M.; Back J. J.; Bailly-reyre A.; Rodriguez P. B.; Balagura V.; Baldini W.; de Souza Leite J. B.; Barbetti M.; Barbosa I. R.; Barlow R. J.; Barsuk S.; Barter W.; Bartolini M.; Baryshnikov F.; Basels J. M.; Bassi G.; Batsukh B.; Battig A.; Bay A.; Beck A.; Becker M.; Bedeschi F.; Bediaga I. B.; Beiter A.; Belin S.; Bellee V.; Belous K.; Belov I.; Belyaev I.; Benane G.; Bencivenni G.; Ben-Haim E.; Berezhnoy A.; Bernet R.; Andres S. B.; Berninghoff D.; Bernstein H. C.; Bertella C.; Bertolin A.; Betancourt C.; Betti F.; Bezshyiko I.; Bhom J.; Bian L.; Bieker M. S.; Biesuz N. V.; Billoir P.; Biolchini A.; Birch M.; Bishop F. C. R.; Bitadze A.; Bizzeti A.; Blago M. P.; Blake T.; Blanc F.; Blank J. E.; Blusk S.; Bobulska D.; Bocharnikov V. B.; Boelhauve J. A.; Garcia O. B.; Boettcher T.; Boldyrev A.; Bolognani C. S.; Bolzonella R.; Bondar N.; Borgato F.; Borghi S.; Borsato M.; Borsuk J. T.; Bouchiba S. A.; Bowcock T. J. V.; Boyer A.; Bozzi C.; Bradley M. J.; Braun S.; Rodriguez A. B.; Breer N.; Brodzicka J.; Gonzalo A. B.; Brown J.; Brundu D.; Buonaura A.; Buonincontri L.; Burke A. T.; Burr C.; Bursche A.; Butkevich A.; Butter J. S.; Buytaert J.; Byczynski W.; Cadeddu S.; Cai H.; Calabrese R.; Calefice L.; Cali S.; Calvi M.; Gomez M. C.; Campana P.; Perez D. H. C.; Quezada A. F. C.; Capelli S.; Capriotti L.; Carbone A.; Cardinale R.; Cardini A.; Carniti P.; Carus L.; Vidal A. C.; Caspary R.; Casse G.; Cattaneo M.; Cavallero G.; Cavallini V.; Celani S.; Cerasoli J.; Cervenkov D.; Chadwick A. J.; Chahrour I.; Chapman M. G.; Charles M.; Charpentier P.; Barajas C. A. C.; Chefdeville M.; Chen C.; Chen S.; Chernov A.; Chernyshenko S.; Chobanova V.; Cholak S.; Chrzaszcz M.; Chubykin A.; Chulikov V.; Ciambrone P.; Cicala M. F.; Vidal X. C.; Ciezarek G.; Cifra P.; Ciullo G.; Clarke P. E. L.; Clemencic M.; Cliff H. V.; Closier J.; Cobbledick J. L.; Coco V.; Cogan J.; Cogneras E.; Cojocariu L.; Collins P.; Colombo T.; Congedo L.; Contu A.; Cooke N.; Corredoira I.; Corti G.; Couturier B.; Craik D. C.; Torres M. C.; Currie R.; Da Silva C. L.;

handle: 11384/156563

Search for D*(2007)0 -> mu+mu- in B--> pi-mu+mu- decays

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Abstract

The very rare D*(2007)0->mu+mu- decay is searched for by analysing B-->pi-mu+mu- decays. The analysis uses a sample of beauty mesons produced in proton–proton collisions collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb-1. The signal signature corresponds to simultaneous peaks in the mu+mu- and pi-mu+μ- invariant masses. No evidence for an excess of events over background is observed and an upper limit is set on the branching fraction of the decay at BR(D*(2007)0->mu+mu-)<2.6x10-8 at 90% confidence level. This is the first limit on the branching fraction of D*(2007)0->mu+mu- decays and the most stringent limit on D*(2007) decays to leptonic final states. The analysis is the first search for a rare charm-meson decay exploiting production via beauty decays.

Country

Italy

Related Organizations

Scuola Normale Superiore
Italy

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