W.Thomas Meyer

High-Statistics Measurement of Collins and Sivers Asymmetries for Transversely Polarized Deuterons

COMPASS

Collaboration

•

G.D. Alexeev
(
- Unlisted
)

et al.

(Dec 30, 2023)

Published in:
- Phys.Rev.Lett. 133 (2024) 10, 101903
•
e-Print:
- 2401.00309 [hep-ex]

reference search12 citations

Final COMPASS Results on the Transverse-Spin-Dependent Azimuthal Asymmetries in the Pion-Induced Drell-Yan Process

COMPASS

Collaboration

•

G.D. Alexeev
(
- Unlisted
)

et al.

(Dec 28, 2023)

Published in:
- Phys.Rev.Lett. 133 (2024) 7, 071902
•
e-Print:
- 2312.17379 [hep-ex]

reference search12 citations

Measurement of polarization observables

\textbf{T}

{\textbf{P}}

, and

{\textbf{H}}

\mathbf {\pi ^0}

and

\mathbf {\eta }

photoproduction off quasi-free nucleons

CBELSA/TAPS

Collaboration

•

N. Jermann
(
- Basel U. and
- Bonn U., HISKP
)

et al.

(Oct 17, 2023)

Published in:
- Eur.Phys.J.A 59 (2023) 10, 232

pdfDOIdatasets

The polarized deuteron target at COMPASS in 2022

et al.

(Mar 26, 2023)

Published in:
- PoS PSTP2022 (2023) 037
•
Contribution to:
- PSTP22
  , 037

reference search0 citations

The new APD-Based Readout of the Crystal Barrel Calorimeter -- An Overview

CBELSA/TAPS

Collaboration

•

C. Honisch
(
- Bonn U., HISKP
)

et al.

(Dec 23, 2022)

e-Print:
- 2212.12364 [physics.ins-det]

pdf

Collins and Sivers transverse-spin asymmetries in inclusive muoproduction of ρ0 mesons

G.D. Alexeev
(
- Unlisted
)
,
M.G. Alexeev
(
- INFN, Turin and
- Turin U.
)
,
C. Alice
(
- INFN, Turin and
- Turin U.
)
,
A. Amoroso
(
- INFN, Turin and
- Turin U.
)
,
V. Andrieux
(
- Illinois U., Urbana
)

et al.

(Oct 31, 2022)

Published in:
- Phys.Lett.B 843 (2023) 137950
•
e-Print:
- 2211.00093 [hep-ex]

reference search10 citations

Spin density matrix elements in exclusive

\rho ^0

meson muoproduction

COMPASS

Collaboration

•

G.D. Alexeev
(
- Unlisted
)

et al.

(Oct 30, 2022)

Published in:
- Eur.Phys.J.C 83 (2023) 10, 924
•
e-Print:
- 2210.16932 [hep-ex]

Double J/ψ production in pion-nucleon scattering at COMPASS

COMPASS

Collaboration

•

G.D. Alexeev
(
- Dubna, JINR
)

et al.

(Apr 4, 2022)

Published in:
- Phys.Lett.B 838 (2023) 137702
•
e-Print:
- 2204.01817 [hep-ex]

The large COMPASS polarized solid ammonia target for Drell–Yan measurements with a pion beam

#10

V. Andrieux
(
- Illinois U., Urbana (main)
)
,
A. Berlin
(
- Ruhr U., Bochum
)
,
N. Doshita
(
- Yamagata U.
)
,
M. Finger
(
- Charles U.
)
,
M. Finger, Jr.
(
- Charles U.
)

et al.

(Feb 11, 2022)

Published in:
- Nucl.Instrum.Meth.A 1025 (2022) 166069

Observation of a structure in the

M_{p\eta }

invariant mass distribution near 1700

{MeV}/ {c}^2

in the

\gamma \mathbf {p \rightarrow p \pi ^0 \eta }

reaction

#11

CBELSA/TAPS

Collaboration

•

V. Metag
(
- Giessen U.
)

et al.

(Oct 11, 2021)

Published in:
- Eur.Phys.J.A 57 (2021) 12, 325
•
e-Print:
- 2110.05155 [nucl-ex]

pdfDOIdatasets

reference search9 citations

Exotic meson

\pi_1(1600)

with

J^{PC} = 1^{-+}

and its decay into

\rho(770)\pi

#12

COMPASS

Collaboration

•

M.G. Alexeev
(
- INFN, Turin and
- Turin U.
)

et al.

(Aug 3, 2021)

Published in:
- Phys.Rev.D 105 (2022) 1, 012005
•
e-Print:
- 2108.01744 [hep-ex]

pdfDOIdatasets

reference search29 citations

Probing transversity by measuring Λ polarisation in SIDIS

#13

COMPASS

Collaboration

•

M.G. Alexeev

et al.

(Apr 28, 2021)

Published in:
- Phys.Lett.B 824 (2022) 136834
•
e-Print:
- 2104.13585 [hep-ex]

reference search10 citations

Observation of the pη′ Cusp in the New Precise Beam Asymmetry Σ Data for γp→pη

#14

CBELSA/TAPS

Collaboration

•

F. Afzal
(
- Bonn U., HISKP
)

et al.

(Sep 14, 2020)

Published in:
- Phys.Rev.Lett. 125 (2020) 15, 152002
•
e-Print:
- 2009.06248 [nucl-ex]

reference search19 citations

Spin density matrix elements in exclusive

\omega

meson muoproduction

#15

COMPASS

Collaboration

•

M.G. Alexeev
(
- Turin U. and
- INFN, Turin
)

et al.

(Sep 7, 2020)

Published in:
- Eur.Phys.J.C 81 (2021) 2, 126
•
e-Print:
- 2009.03271 [hep-ex]

reference search13 citations

Helicity-Dependent Cross Sections for the Photoproduction of π

^0

Pairs from Nucleons

#16

M. Dieterle
(
- Basel U.
)
,
L. Witthauer
(
- Basel U.
)
,
A. Fix
(
- Tomsk Polytechnic U.
)
,
S. Abt
(
- Basel U.
)
,
P. Achenbach
(
- Mainz U., Inst. Kernphys.
)

et al.

(Jul 12, 2020)

Published in:
- Phys.Rev.Lett. 125 (2020) 6, 062001
•
e-Print:
- 2007.06079 [nucl-ex]

Triangle Singularity as the Origin of the

a_1(1420)

#17

COMPASS

Collaboration

•

G.D. Alexeev
(
- Dubna, JINR
)

et al.

(Jun 9, 2020)

Published in:
- Phys.Rev.Lett. 127 (2021) 8, 082501
•
e-Print:
- 2006.05342 [hep-ph]

reference search39 citations

Polarized target at COMPASS

#18

et al.

(Apr 30, 2020)

Published in:
- PoS PSTP2019 (2020) 049
•
Contribution to:
- PSTP 2019
  , 049

reference search0 citations

Contribution of exclusive diffractive processes to the measured azimuthal asymmetries in SIDIS

#19

COMPASS

Collaboration

•

J. Agarwala
(
- INFN, Trieste
)

et al.

(Dec 21, 2019)

Published in:
- Nucl.Phys.B 956 (2020) 115039
•
e-Print:
- 1912.10322 [hep-ex]

with polarized photons and protons and their implications for

New data on

\vec{\gamma} \vec{p}\rightarrow \eta p

N^* \to N\eta

decays

#20

CBELSA/TAPS

Collaboration

•

J. Müller
(
- Bonn U., HISKP
)

et al.

(Sep 18, 2019)

Published in:
- Phys.Lett.B 803 (2020) 135323
•
e-Print:
- 1909.08464 [nucl-ex]

reference search27 citations

Measurement of the helicity asymmetry

E

for the reaction

\gamma p\rightarrow \pi ^0 p

#21

CBELSA/TAPS

Collaboration

•

M. Gottschall
(
- Bonn U., HISKP
)

et al.

(Apr 29, 2019)

Published in:
- Eur.Phys.J.A 57 (2021) 1, 40
•
e-Print:
- 1904.12560 [nucl-ex]

DOIdatasets

reference search13 citations

Measurement of the cross section for hard exclusive

\pi^0

muoproduction on the proton

#22

COMPASS

Collaboration

•

M.G. Alexeev
(
- Turin U.
)

et al.

(Mar 28, 2019)

Published in:
- Phys.Lett.B 805 (2020) 135454
•
e-Print:
- 1903.12030 [hep-ex]

reference search34 citations

COMPASS polarized target in 2018 and 2021

#23

Gerhard Reicherz
(
- Ruhr U., Bochum (main)
)
,
Werner Meyer
(
- Ruhr U., Bochum
)
,
Norihito Doshita
(
- Yamagata U.
)
,
Takahiro Iwata
(
- Yamagata U.
)
,
Kaori Kondo
(
- Yamagata U.
)

et al.

(Jan 15, 2019)

Published in:
- PoS SPIN2018 (2019) 097
•
Contribution to:
- SPIN 2018
  , 097

reference search0 citations

First measurement of helicity-dependent cross sections in

\pi^0 \eta

photoproduction from quasi-free nucleons

#24

A. Käser
(
- Basel U.
)
,
M. Dieterle
(
- Basel U.
)
,
L. Witthauer
(
- Basel U.
)
,
S. Abt
(
- Basel U.
)
,
P. Achenbach
(
- Mainz U., Inst. Kernphys.
)

et al.

(Oct 5, 2018)

Published in:
- Phys.Lett.B 786 (2018) 305-312
•
e-Print:
- 1810.02778 [nucl-ex]

reference search11 citations

Measurement of

P_T

-weighted Sivers asymmetries in leptoproduction of hadrons

#25

COMPASS

Collaboration

•

M.G. Alexeev
(
- Turin U.
)

et al.

(Sep 9, 2018)

Published in:
- Nucl.Phys.B 940 (2019) 34-53
•
e-Print:
- 1809.02936 [hep-ex]