Stato di COMPASS risultati di fisica recenti run 2010 Franco Bradamante risultati di fisica recenti run 2010 interazioni con i comitati e stato della proposta CSN1, Parma, 23 settembre 2010

da settembre 2009 dati protone 2007 Observation of a JPC = 1–+ exotic resonance in diffractive dissociation of 190 GeV/c π– into π–π–π+ acc. PRL CERN-PH-EP/2009-018 hep-ex/0910.5842 The spin-dependent structure function of the proton g1p and a Test of the Bjorken Sum Rule sub. PLB CERN-PH-EP/2010-001 hep-ex/1001.4654 Measurement of the Collins and Sivers asymmetries on transversely polarised protons to be sent Azimuthal asymmetries of charged hadrons produced by high energy muons off longitudinally polarized deuterons dati protone 2007 CSN1 19 maggio 2010

da settembre 2009 PRL 104 (2010) 241803 PLB 690 (2010) 466–472 Observation of a JPC = 1–+ exotic resonance in diffractive dissociation of 190 GeV/c π– into π–π–π+ acc. PRL CERN-PH-EP/2009-018 hep-ex/0910.5842 The spin-dependent structure function of the proton g1p and a Test of the Bjorken Sum Rule sub. PLB CERN-PH-EP/2010-001 hep-ex/1001.4654 Measurement of the Collins and Sivers asymmetries on transversely polarised protons to be sent Azimuthal asymmetries of charged hadrons produced by high energy muons off longitudinally polarized deuterons Quark Helicity Distributions from Longitudinal Spin Asymmetries in Muon-Proton and Muon-Deuteron Scattering PRL 104 (2010) 241803 PLB 690 (2010) 466–472 dati protone 2007 PLB 692 (2010) 240–246 CERN-PH-EP/2010-018 hep-ex/1007.1562 subm. EPJC CERN-PH-EP/2010-023 hep-ex/1007.4061 acc. PLB CSN1 19 maggio 2010 1 settembre 2010

articoli in preparazione open charm production spectrometer – hadron setup e anche altre asimmetrie azimutali di spin trasverso adroni carichi, dati p e d (Torino-Trieste) asimmetrie azimutali nel SIDIS non polarizzato deuterio (Trieste-Dubna) risultati released a inizio settambre

Conferenze IWSS10 - San-Servolo, Italy, March 17-19, 2010 A. Bressan (TS): Transverse spin effects measured in COMPASS DIS 2010 - Firenze, Italy, April 19-23, 2010   O. Denisov (TO): Future Drell-Yan program at COMPASS A. Martin (TS): COMPASS results on transverse spin effects TMD2010 - Trento, Italy, June 21-25, 2010 O. Denisov (TO): TMDs at future DY experiments with COMPASS A. Martin (TS): TMD measurements at COMPASS SIF – Bologna, 20-24 settembre 2010 F. Sozzi (TS): La fisica dello spin del nucleone con sonde di leptoni SPIN 2010 - Juelich, Germany, September 27 - October 2, 2010  A. Bressan (TS): COMPASS spin results B. Parsamyan (TO): Leading order TMD asymmetries on the proton G. Pesaro (TS): Collins and Sivers asymmetries for identified hadrons G. Sbrizzai (TS): Azimuthal asymmetries in unpolarised SIDIS ... + conferenze RICH released a inizio settembre

presentazione all’SPSC il 29 giugno (B. Ketzer)

run 2010

run 2010 29 aprile – 21 novembre

setting up

H1, H2 e LAS T 20-21 maggio: installazione odoscopi (scintillatori) importante confributo INFN struttura meccanica responsabilita’ di TS e TO rispettivamente 20-21 maggio: installazione odoscopi (scintillatori)

H1, H2 e LAS T 20-21 maggio: installazione odoscopi (scintillatori) problema dei PM e dell’elettronica ... fine maggio: inizio commissioning del trigger 19-23 luglio: completamento installazione PM ed elettronica 1 agosto: fine commissioning del LAS Trigger 5 agosto: LAS Trigger nell’acquisizione

H1, H2 e LAS T summary H1 & H2 fully equipped and operational Gandalf trigger electronics seems to work as expected The trigger selects good events in the large Q2 region The trigger seems to be efficient The impurity presently is not understood and has to be further studied (offline)

presa dati completato l’ottavo periodo (ne avevamo in totale 6 nel 2007) Large Angle Spectrometer Trigger (LAS T)

statistica

efficienza p on T6 (15’) efficienza media SPS 80% COMPASS, escludendo il tempo per la ripolarizzazione tra sottoperiodi: 92.5%

qualita’ dei dati monitor profili rivelatori da istogrammi prodotti on-line per ogni run (Erlangen) per ogni periodo allineamenti preliminari in pochi giorni (F. Sozzi (TS) e Erlangen) processatura di alcuni run (200 spill) appena disponibili gli allineamenti (V. Duic (TS)) analisi mDST: tests e stabilita’ (TS ... , su farm locale)

analisi di campioni di dati

analisi di campioni di dati LAST

analisi di campioni di dati

proposta

TS TO

proposta presentazione a SPSC il 29 giugno (N. d’Hose)

proposta Subject: SPSC Draft Minutes Date: Fri, 9 Jul 2010 09:59:45 +0200 Dear All, here are the draft minutes. Regards, Elisabetta 6.1. COMPASS The  SPSC  notes  with  pleasure  the  publication  of  the  exotic JPC=1-+ resonance in the 2004 data and is looking forward to a timely  analysis and publication of the 2008 and 2009 data sets. The SPSC congratulates COMPASS on their recent publications on the spin structure of the proton. 6.2 COMPASS II Proposal The SPSC received with interest the COMPASS II proposal for the future measurement of Primakov, DVCS and Drell-Yan processes  starting from 2012. These measurements provide novel tests of chiral pertubation theory and internal QCD dynamics of the hadrons. The SPSC acknowledges the physics motivation of the program and will further review the proposal.

proposta 23 domande su Primakoff, DVCS, DY e generali Subject: Feedback Date: Wed, 30 Jun 2010 19:21:02 +0200 From: Elisabetta Gallo <gallo@mail.desy.de> Dear Alain, Gerhard and Bernhard, please find attached some questions on the proposal. We will send you the SPSC draft minutes as soon as we get them from Christoph, I did not write down the exact words. Regards, Elisabetta and Lutz 23 domande su Primakoff, DVCS, DY e generali documento di 40 pagine prossimo SPSC meeting: 28 e 29 settembre

Trieste (Italy) – Losinj (Croatia) Transversity 2011 Third International Workshop on Transverse Polarisation Phenomena in Hard Processes Trieste (Italy) – Losinj (Croatia) August 28 – September 3, 2010 organized in the frame of a Ministry-funded inter-university Italian Research Project of National Interest (PRIN) the workshop is fully dedicated to the role of transverse spin, transverse momentum and orbital momentum in nucleons it follows the successful editions of Transversity 2005 (Como, Italy) Transversity 2008 (Ferrara, Italy) the aim of the members of the project is to gather together theorists and experimentalists engaged in investigating the nature of transverse spin in hadron physics, to exchange up-to-date theoretical and experimental ideas and news on the subject