Measurement of angular asymmetries in the decaysB→K*ℓ+ℓ−

Measurement of angular asymmetries in the decaysB→K*ℓ+ℓ−

J. P. Lees,V. Poireau,Vincent Tisserand,Eugeni Graugés,A. Palano,G. Eigen,Bjarne Stugu,D. N. Brown,L. T. Kerth,Yu. G. Kolomensky,M. J. Lee,G. Lynch,H. Koch,T. Schroeder,C. Hearty,T. S. Mattison,J. A. McKenna,R. Y. So,A. Khan,V. E. Blinov,A. R. Buzykaev,V. P. Druzhinin,V. B. Golubev,E. A. Kravchenko,A. P. Onuchin,S. I. Serednyakov,Yu. I. Skovpen,E. P. Solodov,Korneliy Todyshev,A. J. Lankford,B. Dey,J. W. Gary,O. Long,M. Franco Sevilla,T. M. Hong,D. Kovalskyi,J. D. Richman,C. A. West,A. M. Eisner,W. S. Lockman,Jose Guillermo Panduro Vazquez,B. A. Schumm,A. Seiden,D. S. Chao,C. H. Cheng,B. Echenard,K. T. Flood,D. G. Hitlin,T. S. Miyashita,P. Ongmongkolkul,F. C. Porter,M. Röhrken,R. Andreassen,Z. Huard,B. T. Meadows,B. G. Pushpawela,M. D. Sokoloff,L. Sun,P. C. Bloom,William Ford,A. Gaz,J. G. Smith,S. R. Wagner,R. Ayad,W. H. Toki,B. Spaan,D. Bernard,M. Verderi,S. Playfer,D. Bettoni,Concezio Bozzi,Roberto Calabrese,G. Cibinetto,E. Fioravanti,I. Garzia,E. Luppi,L. Piemontese,Valentina Santoro,A. Calcaterra,R. De Sangro,G. Finocchiaro,S. Martellotti,P. Patteri,I. M. Peruzzi,M. Piccolo,A. Zallo,R. Contri,M. R. Monge,S. Passaggio,Claudia Patrignani,B. Bhuyan,V. Prasad,A. Adametz,U. Uwer,H. M. Lacker,U. Mallik,C. Chen,J. Cochran,S. Prell,H. Ahmed,A. V. Gritsan,N. Arnaud,M. Davier,D. Derkach,G. Grosdidier,F. Le Diberder,A. M. Lutz,B. Malaescu,P. Roudeau,A. Stocchi,G. Wormser,D. J. Lange,D. M. Wright,Jonathon Coleman,J. R. Fry,E. Gabathuler,David Hutchcroft,D. J. Payne,C. Touramanis,A. J. Bevan,Francesca Di Lodovico,R. Sacco,G. Cowan,C. L. Davis,A. G. Denig,M. Fritsch,W. Gradl,K. Griessinger,A. Hafner,K. R. Schubert,Roger Barlow,George Lafferty,Riccardo Cenci,B. Hamilton,A. Jawahery,D. A. Roberts,R. Cowan,Racha Cheaib,P. M. Patel,S. H. Robertson,Nicola Neri,F. Palombo,L. Cremaldi,R. Godang,D. J. Summers,M. Simard,P. Taras,G. De Nardo,G. Onorato,Crisostomo Sciacca,Gerhard Raven,C. P. Jessop,J. M. LoSecco,K. Honscheid,R. Kass,M. Margoni,M. Morandin,M. Posocco,Marcello Rotondo,Gabriele Simi,F. Simonetto,Roberto Stroili,S. Akar,E. Ben-Haim,M. Bomben,G. R. Bonneaud,H. Briand,G. Calderini,J. Chauveau,Ph. Leruste,G. Marchiori,José Ocariz,M. Biasini,E. Manoni,Alessandro Rossi,C. Angelini,G. Batignani,Stefano Bettarini,M. Carpinelli,Giulia Casarosa,M. Chrzaszcz,F. Forti,M. A. Giorgi,A. Lusiani,B. Oberhof,E. Paoloni,M. Rama,G. Rizzo,J. J. Walsh,D. Lopes Pegna,J. Olsen,A. J. S. Smith,F. Anulli,R. Faccini,Fabio Ferrarotto,F. Ferroni,M. Gaspero,Alessandro Pilloni,G. Piredda,C. Bünger,S. Dittrich,O. Grünberg,M. Hess,T. Leddig,C. Voß,R. Waldi,Tim Adye,E. O. Olaiya,Fergus Wilson,S. Emery,G. Vasseur,D. Aston,D. J. Bard,C. Cartaro,M. R. Convery,J. Dorfan,G. P. Dubois-Felsmann,W. Dunwoodie,Marcus Ebert,R. C. Field,B. G. Fulsom,M. T. Graham,C. Hast,W. R. Innes,P. Kim,D. W. G. S. Leith,S. Luitz,V. Luth,D. B. MacFarlane,D. R. Muller,H. Neal,T. Pulliam,B. N. Ratcliff,Aaron Roodman,R. H. Schindler,A. Snyder,D. Su,M. K. Sullivan,J. Va’Vra,W. J. Wisniewski,H. W. Wulsin,M. V. Purohit,J. R. Wilson,A. Randle-Conde,S. J. Sekula,Matthew Bellis,P. R. Burchat,E. M. T. Puccio,M. S. Alam,J. A. Ernst,R. Gorodeisky,N. Guttman,D. R. Peimer,A. Soffer,S. M. Spanier,J. L. Ritchie,R. F. Schwitters,Joseph Izen,X. C. Lou,F. Bianchi,F. De Mori,Alessandra Filippi,D. Gamba,Livio Lanceri,Lorenzo Vitale,Fernando Martinez-Vidal,A. Oyanguren,Justin Albert,Sw. Banerjee,A. Beaulieu,F. U. Bernlochner,H. H. F. Choi,G. J. King,Robert Kowalewski,M. J. Lewczuk,T. Lueck,I. M. Nugent,J. M. Roney,R. J. Sobie,N. Tasneem,T. J. Gershon,P. F. Harrison,Thomas Latham,H. R. Band,S. Dasu,Y. Pan,R. Prepost,Sau Lan Wu,The BABAR Collaboration;J. P. Lees;V. Poireau;Vincent Tisserand;Eugeni Graugés;A. Palano;G. Eigen;Bjarne Stugu;D. N. Brown;L. T. Kerth;Yu. G. Kolomensky;M. J. Lee;G. Lynch;H. Koch;T. Schroeder;C. Hearty;T. S. Mattison;J. A. McKenna;R. Y. So;A. Khan;V. E. Blinov;A. R. Buzykaev;V. P. Druzhinin;V. B. Golubev;E. A. Kravchenko;A. P. Onuchin;S. I. Serednyakov;Yu. I. Skovpen;E. P. Solodov;Korneliy Todyshev;A. J. Lankford;B. Dey;J. W. Gary;O. Long;M. Franco Sevilla;T. M. Hong;D. Kovalskyi;J. D. Richman;C. A. West;A. M. Eisner;W. S. Lockman;Jose Guillermo Panduro Vazquez;B. A. Schumm;A. Seiden;D. S. Chao;C. H. Cheng;B. Echenard;K. T. Flood;D. G. Hitlin;T. S. Miyashita;P. Ongmongkolkul;F. C. Porter;M. Röhrken;R. Andreassen;Z. Huard;B. T. Meadows;B. G. Pushpawela;M. D. Sokoloff;L. Sun;P. C. Bloom;William Ford;A. Gaz;J. G. Smith;S. R. Wagner;R. Ayad;W. H. Toki;B. Spaan;D. Bernard;M. Verderi;S. Playfer;D. Bettoni;Concezio Bozzi;Roberto Calabrese;G. Cibinetto;E. Fioravanti;I. Garzia;E. Luppi;L. Piemontese;Valentina Santoro;A. Calcaterra;R. De Sangro;G. Finocchiaro;S. Martellotti;P. Patteri;I. M. Peruzzi;M. Piccolo;A. Zallo;R. Contri;M. R. Monge;S. Passaggio;Claudia Patrignani;B. Bhuyan;V. Prasad;A. Adametz;U. Uwer;H. M. Lacker;U. Mallik;C. Chen;J. Cochran;S. Prell;H. Ahmed;A. V. Gritsan;N. Arnaud;M. Davier;D. Derkach;G. Grosdidier;F. Le Diberder;A. M. Lutz;B. Malaescu;P. Roudeau;A. Stocchi;G. Wormser;D. J. Lange;D. M. Wright;Jonathon Coleman;J. R. Fry;E. Gabathuler;David Hutchcroft;D. J. Payne;C. Touramanis;A. J. Bevan;Francesca Di Lodovico;R. Sacco;G. Cowan;C. L. Davis;A. G. Denig;M. Fritsch;W. Gradl;K. Griessinger;A. Hafner;K. R. Schubert;Roger Barlow;George Lafferty;Riccardo Cenci;B. Hamilton;A. Jawahery;D. A. Roberts;R. Cowan;Racha Cheaib;P. M. Patel;S. H. Robertson;Nicola Neri;F. Palombo;L. Cremaldi;R. Godang;D. J. Summers;M. Simard;P. Taras;G. De Nardo;G. Onorato;Crisostomo Sciacca;Gerhard Raven;C. P. Jessop;J. M. LoSecco;K. Honscheid;R. Kass;M. Margoni;M. Morandin;M. Posocco;Marcello Rotondo;Gabriele Simi;F. Simonetto;Roberto Stroili;S. Akar;E. Ben-Haim;M. Bomben;G. R. Bonneaud;H. Briand;G. Calderini;J. Chauveau;Ph. Leruste;G. Marchiori;José Ocariz;M. Biasini;E. Manoni;Alessandro Rossi;C. Angelini;G. Batignani;Stefano Bettarini;M. Carpinelli;Giulia Casarosa;M. Chrzaszcz;F. Forti;M. A. Giorgi;A. Lusiani;B. Oberhof;E. Paoloni;M. Rama;G. Rizzo;J. J. Walsh;D. Lopes Pegna;J. Olsen;A. J. S. Smith;F. Anulli;R. Faccini;Fabio Ferrarotto;F. Ferroni;M. Gaspero;Alessandro Pilloni;G. Piredda;C. Bünger;S. Dittrich;O. Grünberg;M. Hess;T. Leddig;C. Voß;R. Waldi;Tim Adye;E. O. Olaiya;Fergus Wilson;S. Emery;G. Vasseur;D. Aston;D. J. Bard;C. Cartaro;M. R. Convery;J. Dorfan;G. P. Dubois-Felsmann;W. Dunwoodie;Marcus Ebert;R. C. Field;B. G. Fulsom;M. T. Graham;C. Hast;W. R. Innes;P. Kim;D. W. G. S. Leith;S. Luitz;V. Luth;D. B. MacFarlane;D. R. Muller;H. Neal;T. Pulliam;B. N. Ratcliff;Aaron Roodman;R. H. Schindler;A. Snyder;D. Su;M. K. Sullivan;J. Va’Vra;W. J. Wisniewski;H. W. Wulsin;M. V. Purohit;J. R. Wilson;A. Randle-Conde;S. J. Sekula;Matthew Bellis;P. R. Burchat;E. M. T. Puccio;M. S. Alam;J. A. Ernst;R. Gorodeisky;N. Guttman;D. R. Peimer;A. Soffer;S. M. Spanier;J. L. Ritchie;R. F. Schwitters;Joseph Izen;X. C. Lou;F. Bianchi;F. De Mori;Alessandra Filippi;D. Gamba;Livio Lanceri;Lorenzo Vitale;Fernando Martinez-Vidal;A. Oyanguren;Justin Albert;Sw. Banerjee;A. Beaulieu;F. U. Bernlochner;H. H. F. Choi;G. J. King;Robert Kowalewski;M. J. Lewczuk;T. Lueck;I. M. Nugent;J. M. Roney;R. J. Sobie;N. Tasneem;T. J. Gershon;P. F. Harrison;Thomas Latham;H. R. Band;S. Dasu;Y. Pan;R. Prepost;Sau Lan Wu;The BABAR Collaboration;
physical review d 2016 Vol. 93 pp. 052015-
223
collaboration2016physicalmeasurement

Abstract

We study the lepton forward-backward asymmetry AFB and the longitudinal K* polarization FL, as well as an observable P2 derived from them, in the rare decays B→K*ℓ+ℓ−, where ℓ+ℓ− is either e+e− or μ+μ−, using the full sample of 471 million BB¯ events collected at the ϒ(4S) resonance with the BABAR, detector at the PEP-II e+e− collider. We separately fit and report results for the K*0(892)ℓ+ℓ− and K*+(892)ℓ+ℓ− final states, as well as their combination K*ℓ+ℓ−, in five disjoint dilepton mass-squared bins. An angular analysis of B+→K*+ℓ+ℓ− decays is presented here for the first time.

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