mesonselected

SelectedTopicsonHadronicBDecaysfromBaBarKazuhitoSuzuki(SLAC)forTheBaBarCollaborationKazuhitoSuzuki(SLAC)2BEACH2008,June23OutlineThetalkwillfocusoncharmlesshadronicBdecays.
Topicstobepresentedaremainlytime-integratedanalyses(BFandACP)ofthefollowingmodes.
B->K+p-p+B->K+p-p0B0->PPwithh()B->PVwithisoscalarmesonsB0->APwithb1Followingtopicscanbefoundinothertalks.
B->VV,VA,VT=>SeeGaostalkTime-dependentCPanalyses=>SeeMartinez-VidalstalkKazuhitoSuzuki(SLAC)3BEACH2008,June23Dominatedby"Tree"and/or"Penguin"diagrams.
Tree(T):CKM-suppressedb->utransitionPenguin(P):One-loopb->s,dgluonictransitionsTree-PenguinInterferencecancausedirectCPasymmetry(Acp).
InformationonCKMangleg=arg(Vub)maybeaccessible.
AbsenceofCKM-favoredb->ctransitionmakespossibletoaccessraredecayprocesses.
GoodplacetotestStandardModel(SM)precisely.
Disagreementsbetweenmeasurementsandpredictions,"puzzles",couldindicatenewphysics(NP).
Searchingforandresolving"puzzles"isanimprotantissue.
CharmlesshadronicBdecaysKazuhitoSuzuki(SLAC)4BEACH2008,June23TypicalanalysisprocedureSelectBcandidatesbasedonmESandDEDiscriminatee+e-->qq(q=u,d,s,c)continuumbkg.
basedoneventtopology.
Extracttheinformationbyapplyingmaximum-likelihoodfitutilizingmES,DEand/orresonancemasseventtopologyangularcorrelationDalitzplotvariablesKazuhitoSuzuki(SLAC)5BEACH2008,June23PuzzlesincharmlesshadronicBdecaysDACP(Kp)puzzleKazuhitoSuzuki(SLAC)6BEACH2008,June23DACP(Kp)=0isexpected,butnot.
BothdecaysaredominatedbyTree(T)andgluonicPenguin(P)contributions.
K+p0modehasadditionalcontributions.
Color-suppressedTree(C)ElectroweakPenguin(PEW)BothexpectedtobesmallinSM.
UnexpectedenhancementsinCand/orPEWNewphysicsImportanttolookatACPinB+decayswithsimilardecaytopology.
B+->r0(->p+p-)K+DACP(B->Kp)puzzle[1]PRL99,021603(2007);PRD76,091102(2007)[2]Nature452,332(2008)KazuhitoSuzuki(SLAC)7BEACH2008,June23r0K+r0K-f0K-f0K+B-B+DalitzplotanalysisofB+->K+p-p+(1)IsobarmodelfitIncorporatingm2(K+p-),m2(p+p-),mES,DE/sDE,qB(B-mesoncharge)LASSparameterizationforKpS-wave(Kp)0*0Nucl.
Phys.
B296,493(1988)EvidenceforlargeACP(r0K+)ACP=+0.
44+-0.
10+-0.
04+0.
05/-0.
13(model)3.
7sstatistically(>3sincl.
sys.
)SizableasexpectedinSM,unlikeACP(p0K+)ACP~0inothermodesandintotal.
ACP(f0(1270)K+)isat3.
5s,buthaslargemodeluncertainties.
NoACPinthepenguin-dominantmodesofK*0(892)p+,(Kp)0*0p+,K2*0(1430)p+ConsistentwithSMMeasuredBFsareconsistentwiththepreviousmeasurementsgenerally.
BF(K+p-p+)=(54.
4+-1.
1+-4.
5+-0.
7(model))x10-6CompatiblewiththeBellemeasurement:(48.
4+-1.
1+-3.
6)x10-6[PRL96,251803(2006)]arXiv:0803.
4451[hep-ex](tobepublishedinPRD)383.
2MBB(347.
5/fb)Totalfite+e-->qq(q=u,d,s,c)bkg.
Bdecaybkg.
KazuhitoSuzuki(SLAC)8BEACH2008,June23DalitzplotanalysisofB+->K+p-p+(2)KpandppdynamicsGoodfitsrequireK2*0(1430)p+,f2(1270)K+,fX(1300)K+fX(1300)seemsconsistentwithf0(1500)m=(1479+-8)MeV/c2G=(80+-19)MeV/c2ConsistentwithBellemeasurementsm=(1449+-13)MeV/c2G=(126+-25)MeV/c2Theirimplicationisf0(1370)Abettermodelinm(Kp)=1.
2-1.
4GeV/c2Fitmodelincludes(Kp)0*0andK2*0(1430)Nobetteralternativemodelswerefound.
ModelforKpS-waveisdifferentbetweenBaBarandBelle.
BqBar:effectiverange+constantNR.
Belle:NRwithvariationinmagnitude.
MeasuredBFsaregenerallyconsistent.
KpppKazuhitoSuzuki(SLAC)9BEACH2008,June23Constraintong/(r,h)fromDalitzplotanalysisofB->KppDalitzplotanalysiscanprovideamplitudeinformation.
MagnitudesandrelativephasesofB->K*p+c.
c.
areofparticularinterest.
ToconstraintheCKMparameters(r,h)(orgifneglectingPEW)Ciuchini,Pierini,Silvestrini(CPSmethod):PRD74,051301(R)(2006)Gronau,Pirjol,Soni,Zupan(GPSZmethod):PRD75,014002(2007)K*0(892)p+andK0*0(1430)p+fromB+->K+p-p+MuchmoreinformationfromB0->K+p-p0,K0Sp+p-KazuhitoSuzuki(SLAC)10BEACH2008,June23K*0p0DalitzplotanalysisofB0->K+p-p0(1)SomenumbersareupdatedinMay2008.
Correctedandimprovederrorsonphases.
Minutecorrectionson(Kp)0*BFs.
Fitsfound4minimaof–log(LH).
Substantialdifferenceinphases,butnotsointheotherparameters.
Resultsareaveragedoverthesolutions.
FirstobservationofB0->K*0(892)p0BF=(3.
6+-0.
7+-0.
4)x10-6(5.
6sincl.
sys.
)TotalB0->K+p-p0BFandACPBF=(35.
7+2.
6/-1.
5+-2.
2)x10-6ACP=-0.
030+0.
045/-0.
051+-0.
055Nosignificantchargeasymmetries.
Neitherindecayratesnorininterferences.
SizableKpS-Pinterferencecanbeseen.
arXiv:0711.
4417v2[hep-ex](submittedtoPRD)BaBarPreliminary231.
8MBB(210.
6/fb)AssumingBF(K*0->K+p-)=2/3Includingsub-decayBFscosqH>0cosqHK+p-p0B0->K0Sp+p-Atime-dependentDalitzplotanslysisarXiv:0708.
2097[hep-ex]h=tanF3/2(r-0.
24+-0.
03)UpdatedK+p-p0resultssharpenedthe1srange.
20K+p-p0(2)arXiv:0712.
3751v2[hep-ph](addendum)KazuhitoSuzuki(SLAC)12BEACH2008,June23PuzzlesincharmlesshadronicBdecaysDACP(Kp)puzzleDSpuzzleKazuhitoSuzuki(SLAC)13BEACH2008,June23DS~0isexpectedinSMtoagoodapproximation.
TheoriesindicateDS>0.
MeasurementsindicateDSKazuhitoSuzuki(SLAC)14BEACH2008,June23PuzzlesincharmlesshadronicBdecaysDACP(Kp)puzzleDSpuzzlePolarizationpuzzleLongitudinalpolarizationDominantincharmlessB->VVdecayswithinSM.
Confirmedintree-levelb->utransition.
TransversepolarizationSeenlargecontributionsinb->s,dPenguintransitions.
NewphysicsSeeGaostalkforthediscussion.
KazuhitoSuzuki(SLAC)15BEACH2008,June23PuzzlesincharmlesshadronicBdecaysDACP(Kp)puzzleDSpuzzlePolarizationpuzzleAnyotherpuzzlesNeedtotestthetheoreticalunderstandingpreciselyandsystematically.
Needtomeasurepreciselyandasmanymodesaspossible.
RecentcontributionsfromBaBarB->PPwithh()B->PVwithisoscalarmesonsB->APwithb1KazuhitoSuzuki(SLAC)16BEACH2008,June23UpdatesonsearchesforB0->h()p0,h()h,hh,hK0Usingthefollowingsub-decaysh->gg("hgg"),p+p-p0;h->hggp+p-,r0gw->p+p-p0;K0SforK0Noclearsignalsareseenyet.
3.
1ssignificanceforhp0UL(hK0)istightened.
Previous:BF=(1.
8+0.
7/-0.
6+-0.
1hK0BaBarPreliminaryKazuhitoSuzuki(SLAC)17BEACH2008,June23BF(h()K)puzzleExpectedBF(hK)~BF(hK),butBF(hK)>(12.
9+-0.
6)+(23.
1+-1.
0)Canbeexplainedbytheadditionalgluoniccharmingpenguin.
Williamson,Zupan,PRD74014003(2006)Furtherimprovementswouldbeexpected.
KazuhitoSuzuki(SLAC)18BEACH2008,June23BaBarPreliminaryh(->gg)r+h(->3p)r+m(gg)m(p+p-)m(p+p-)m(p+p-p0)UpdatesonsearchesforB->hr+,p0w,h()w,h()f9sobservationofB+->hr+BF=(9.
9+-1.
2+-0.
8)x10-6ACP=0.
13+-0.
11+-0.
023slevelevidencesforB0->h()wNoclearsignalsforB0->p0wandh()f[1]arXiv:0804.
2422(submittedtoPRD)459MBB(418/fb)[2]New465MBB(423.
5/fb)[2][1]KazuhitoSuzuki(SLAC)19BEACH2008,June23B->PPandPVwithisoscalarmesons:measurementsvs.
predictionsW.
T.
Ford@FPCP08KazuhitoSuzuki(SLAC)20BEACH2008,June23B->PPandPVwithisoscalarmesons:constraintsonDSMeasuredBFscanbeusedasinputstoconstrainDS.
Givingtheinformationon"Tree"-pollution.
h()p0,h()handhhforDS(hK0)Grossman,Ligeti,Nir,Quinn(GLNQ):PRD68,015004(2003)Gronau,Rosner,Zupan(GRZ):PLB596,107(2004)wp0,h()wandh()fforDS(fK0)GLNQmethodInterestingtoseefurtherupdates.
BasedonpreviousmeasurementsGRZ:PRD74,093003(2006)-0.
046b1K0andb1p0Reconstructingb1->w(->3p)pInPDG,listedparametersarem=1229.
5+-3.
2MeV/c2G=142+-9MeV/c2Inthefits,b1andwmassesareallowedtovary.
BF(b1->wp)=1isassumedforBFcalculations.
6.
3sobservationofB+->b1+K0BF=(9.
6+-1.
7+-0.
9)x10-6ACP=-0.
03+-0.
15+-0.
023.
4sevidenceforB0->b10K0Noevidenceforthep0modes.
arXiv:0805.
1217[hep-ex](submitttedtoPRD)465MBB(424/fb)m(p+p-p0)m(p+p-p0p+)B+->b1+K0BaBarPreliminaryKazuhitoSuzuki(SLAC)22BEACH2008,June23B->AP:measurementsvs.
predictionsWang,Li,Lu,arXiv:0806.
2510[hep-ph]Severaldiscrepanciescanbeseen.
KazuhitoSuzuki(SLAC)23BEACH2008,June23Wang,Li,Lu,arXiv:0806.
2510[hep-ph]Severaldiscrepanciescanbeseen.
ParticularlyinterestingmeasuresareR1=BF(B-->a1-K0)/BF(B0->a1+K-)xt0/t-=1.
00(QCDF),1.
16(PQCD),0.
91(SCET)=2.
00+-0.
59(Meas.
)R2=BF(B-->b10K-)/BF(B0->b1+K-)xt0/t-=0.
50(QCDF),0.
54(PQCD),0.
50(SCET)=1.
15+-0.
34(Meas.
)Veryinterestingtoseeimprovedornewmeasurements.
B->AP:measurementsvs.
predictionsKazuhitoSuzuki(SLAC)24BEACH2008,June23SummaryDalitzplotanalysesofB->K+p-p+andK+p-p0areupdated.
EvidenceofACP(r0K+)ObservationofB0->K*0(892)p0AmplitudesofK*pandtheconstraintonCKMparameters.
QuiteafewupdatesonB->PPandPVwithisoscalarmesonsandnewmeasurementsonB->b1p0andb1K0.
ObservationsofB+->hr+andb1+K03slevelevidencesforB0->h()w,hp0andb10K0ImprovedmeasurementswouldhelptoresolvepuzzlesCharmlesshadronicBdecaysproviderichfieldtotestSMandtoprobeNP.