Stator for an electrical machine including a plurality of segments, - wherein each segment includes a segment body circumferentially extending about a longitudinal axis of the stator segment between two circumferential ends, the segment body including: - a plurality of teeth (15, 16) protruding according to a radial direction orthogonal to the longitudinal axis from a yoke of the segment body to respective tooth radial ends (35, 36), each tooth (15, 16) circumferentially extending between two respective side faces (25, 26), the plurality of teeth (15, 16) being circumferentially distributed between two end teeth of the plurality of teeth (15, 16), the plurality of teeth (15, 16) comprising at least one intermediate tooth circumferentially comprised between the end teeth, - a plurality of slots (17, 18), circumferentially interposed between the teeth (15, 16) of the stator, the plurality of slots (17, 18) being circumferentially distributed between two end slots, each end slot being circumferentially comprised between a respective end tooth and a respective circumferential end, the plurality of slots (17, 18) comprising a plurality of intermediate slots circumferentially comprised between the two end slots, characterized in that - the plurality of segments are circumferentially joined together at their ends in such a way that a segment tolerance circumferential gap is interposed between two circumferentially adjacent stator segments, wherein - in order to reduce torque harmonics and power harmonics due to the interposed circumferential gap between two circumferentially adjacent stator segments, at least one of the two end teeth of each stator segment includes a circumferential protrusion at the respective tooth radial end, the circumferential protrusion protruding from the respective side face towards the respective circumferential end, and - wherein each segment comprises a coil winding arranged in the segment body, the coil winding including at least two side coils respectively housed in the end slots, at least one of the two side coils being radially interposed between the circumferential protrusion and the yoke of the segment. - wherein each segment includes a segment body circumferentially extending about a longitudinal axis of the stator segment between two circumferential ends, the segment body including: - a plurality of teeth (15, 16) protruding according to a radial direction orthogonal to the longitudinal axis from a yoke of the segment body to respective tooth radial ends (35, 36), each tooth (15, 16) circumferentially extending between two respective side faces (25, 26), the plurality of teeth (15, 16) being circumferentially distributed between two end teeth of the plurality of teeth (15, 16), the plurality of teeth (15, 16) comprising at least one intermediate tooth circumferentially comprised between the end teeth, - a plurality of slots (17, 18), circumferentially interposed between the teeth (15, 16) of the stator, the plurality of slots (17, 18) being circumferentially distributed between two end slots, each end slot being circumferentially comprised between a respective end tooth and a respective circumferential end, the plurality of slots (17, 18) comprising a plurality of intermediate slots circumferentially comprised between the two end slots, - the plurality of segments are circumferentially joined together at their ends in such a way that a segment tolerance circumferential gap is interposed between two circumferentially adjacent stator segments, wherein - in order to reduce torque harmonics and power harmonics due to the interposed circumferential gap between two circumferentially adjacent stator segments, at least one of the two end teeth of each stator segment includes a circumferential protrusion at the respective tooth radial end, the circumferential protrusion protruding from the respective side face towards the respective circumferential end, and - wherein each segment comprises a coil winding arranged in the segment body, the coil winding including at least two side coils respectively housed in the end slots, at least one of the two side coils being radially interposed between the circumferential protrusion and the yoke of the segment.